Details of the Researcher

PHOTO

Hiroyuki Shibata
Section
Institute of Multidisciplinary Research for Advanced Materials
Job title
Professor
Degree

  • 博士（工学）（東北大学）

e-Rad No.
50250824

Education 1

  • Tohoku University　Graduate School, Division of Engineering　金属工学

    - 1993/03/25

Committee Memberships 7

  • 一般社団法人 日本鉄鋼協会　編集委員会 副委員長

    2024/03 - Present

  • JAXA　きぼう利用テーマ選考評価委員会(物質・物理科学) 委員

    2022/04 - Present

  • 一般社団法人 循環社会推進協議会　理事、製錬部会長

    2020/03 - Present

  • 一般社団法人 日本鉄鋼協会　日独北欧セミナー 組織委員長

    2018/08 - 2025/03

  • 一般社団法人 日本鉄鋼協会　理事、高温プロセス部会長

    2022/03 - 2024/02

  • 社団法人 日本鉄鋼協会　高温プロセス部会 複合造粒・層設計焼結研究会 委員

    2005/04 - 2009/03

  • 社団法人 日本金属学会　第５分科会委員

    2005/03 - 2007/03

Show all ︎Show first 5

Professional Memberships 2

  • 金属学会

  • 鉄鋼協会

Research Areas 2

  • Nanotechnology/Materials / Metals and resources production / Metal Productive Engineering

  • Nanotechnology/Materials / Metallic materials /

Papers 286

  1. Iron redox effect on the structure and viscosity of a sodium silicate glass and melt Peer-reviewed

    Sohei Sukenaga, Maria Rita Cicconi, Hiroki Yamada, Toru Wakihara, Koji Ohara, Hiroyuki Shibata, Daniel R. Neuville

    The Journal of Chemical Physics　161　(24)　2024/12/24

    Publisher: AIP Publishing

    DOI： 10.1063/5.0243427 　

    ISSN： 0021-9606

    eISSN： 1089-7690

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    The viscosity of silicate melts is one of the most important physical properties for understanding high-temperature phenomena in magmatic systems and material processing. The effects of composition and temperature on viscosity have long been elucidated. Although iron ions are the main components of magmatic systems, their influence on viscosity remains unclear because the behavior of iron is complicated; iron ions have two redox states, Fe3+ and Fe2+. Here, we elucidate the viscosity of an iron-sodium-silicate system with a variety of iron redox states at temperatures close to its glass transition temperature (Tg). The redox states and structures of the samples were characterized using x-ray absorption near-edge structure (XANES) spectroscopy, Raman spectroscopy, synchrotron x-ray total scattering, and density (molar volume) measurements. The viscosity increased (by more than four orders of magnitude) with an increase in the ratio of Fe3+ to total Fe (Fe3+/Fetot), whereas the temperature dependence of the viscosity was larger for glasses with a higher Fe3+/Fetot ratio at temperatures close to the glass transition temperature. The tendencies in viscosity and structural variation against the Fe3+/Fetot ratio support the consensus on the structural roles of Fe3+ and Fe2+ from previous studies: Fe3+ ions have a stronger tendency to behave as network formers than Fe2+ ions.

  2. Reaction Mechanism of MgAl2O4 Refractories in Contact with a Liquid Ferromanganese Metal International-journal International-coauthorship Peer-reviewed

    Jaewoo Myung, Jiwon Park, Kyung-Ho Kim, Hiroyuki Shibata, Yunki Byeun, Yongsug Chung

    Metals and Materials International　30　(12)　3513-3522　2024/10/22

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s12540-024-01820-8 　

    ISSN： 1598-9623

    eISSN： 2005-4149

  3. (Invited) In-situ Observation of Silicon Carbide Solution Growth: Observation Principle and Effect of Al Addition to Si-Cr Solvent Invited Peer-reviewed

    Sakiko Kawanishi, Tomohiro Yamada, Hironori Daikoku, Hiroyuki Shibata, Takeshi Yoshikawa

    ECS Transactions　114　(4)　3-15　2024/09/27

    Publisher: The Electrochemical Society

    DOI： 10.1149/11404.0003ecst 　

    ISSN： 1938-5862

    eISSN： 1938-6737

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    The in-situ interface observation of silicon carbide (SiC) solution growth effectively elucidates various phenomena occurring at the growth front. To investigate this observation technique from the perspective of the optical transmission properties of SiC, the optical absorption properties of 3C-, 4H-, and 6H-SiC were measured over a wide range of temperatures. The obtained absorption properties indicate the optical conditions necessary for in-situ observation and the possibility of identifying different polytype inclusions. Furthermore, the effect of Al addition to the Si-Cr solvent on the SiC growth interface, where Al addition is known to be effective for growing high-quality SiC, was investigated by in situ observations. It was clarified that the presence of Al suppressed the formation of step pinning, resulting in preventing the formation of bunching steps and subsequent roughening of the growth interface.

  4. Crystallization Behavior of the CaO–SiO2–Al2O3–MgO System Inclusions Peer-reviewed

    Yong Wang, Sohei Sukenaga, Masanori Tashiro, Hua Zhang, Hongwei Ni, Hiroyuki Shibata

    steel research international　2024/08/04

    Publisher: Wiley

    DOI： 10.1002/srin.202400253 　

    ISSN： 1611-3683

    eISSN： 1869-344X

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    The crystallization process of low melting point CaO–SiO2–Al2O3–MgO system inclusions during the continuous casting and hot rolling process greatly affects the deformability of inclusions. The effect of Al2O3 and MgO contents on the crystallization characteristics of CaO–SiO2–Al2O3–MgO system melts representing the typical oxide inclusions in Si–Mn deoxidized steels is systematically investigated. The continuous cooling transformation and time–temperature transformation experiments are carried out. The results reveal that the increase of Al2O3 contents restrains the crystallization process of the melt, whereas the crystallization tendency of the melt is promoted with the increase of MgO contents. The precipitated phases are predominately 2CaO·MgO·2SiO2 and 3CaO·MgO·2SiO2, and the primary crystalline phase is unaffected by the changes of Al2O3 and MgO contents. To obtain low melting point plasticized inclusions with limited crystallization ability, it is recommended to control the Al2O3 and MgO contents greater than 15 wt% and below 5 wt%, respectively. The isothermal treatment is suggested to be controlled within a proper temperature range (1175–1250 °C) to decrease the crystallization kinetics. The oxide system's viscosity change is the limiting kinetic factor in the crystallization process, and it can be utilized to predict the system's crystallization tendency.

  5. Effect of calcium and potassium oxide addition on the viscosity and fragility of a calcium aluminosilicate melt Peer-reviewed

    Sohei Sukenaga, Yann Gueguen, Fabrice Celarie, Tanguy Rouxel, Masanori Tashiro, Shinichiro Yoshida, Noritaka Saito, Kunihiko Nakashima, Hiroyuki Shibata

    Journal of the American Ceramic Society　107　(6)　3822-3836　2024/01/31

    Publisher: Wiley

    DOI： 10.1111/jace.19722 　

    ISSN： 0002-7820

    eISSN： 1551-2916

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    Abstract Fragility is commonly quantified as the magnitude of change in viscosity at a temperature close to the glass transition temperature (Tg). It is a critical characteristic of melts used in scientific and industrial applications. The fragility of silicate melts generally increases with the depolymerization of silicate anions upon the addition of alkali or alkaline earth oxides. However, the effects of oxide additives on the fragility of aluminosilicate melts remain unclear. In this study, the effect of CaO or K2O addition on the viscosity of the 36CaO–51SiO2–13Al2O3 (mol.%) melt for the wide viscosity range of 10−1–1012 Pa s was studied. The relationship between the logarithmic viscosity and Tg‐scaled temperature indicated that the melt fragility increased with the addition of CaO, whereas the addition of K2O reduced the fragility when the additive content of CaO or K2O was less than 10.8 mol.%. The effect of the addition of K2O on fragility cannot be explained by the depolymerization of silicate anions alone. Raman and 27Al nuclear magnetic resonance spectroscopies of the glasses indicated that a decrease in the level of distortion of the AlO4 tetrahedra decreased the fragility of the aluminosilicate melt.

  6. In-situ Observation of Inclusion Formation Behaviors during Solidification Process Using Model Alloy Peer-reviewed

    Sakiko Kawanishi, Yuki Tsukahara, Shingo Terashima, Haruto Nakao, Sohei Sukenaga, Hiroyuki Shibata

    Tetsu-to-Hagane　2024

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/tetsutohagane.tetsu-2024-120 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  7. Quantitative Understanding of Solute Concentration Distribution by Microsegregation During Solidification Peer-reviewed

    Sakiko Kawanishi, Shingo Terashima, Yuki Tsukahara, Sohei Sukenaga, Hisao Esaka, Hiroyuki Shibata

    Tetsu-to-Hagane　2024

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/tetsutohagane.tetsu-2024-098 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  8. Phonon mean free path of silicate glasses: a useful parameter to distinguish between framework and nonframework cations Peer-reviewed

    Sohei Sukenaga, Bunta Ozato, Yohei Onodera, Shinji Kohara, Masahiro Shimizu, Tsuyoshi Nishi, Rie Endo, Takaaki Tomai, Akira Yoko, Sakiko Kawanishi, Hiroshi Fukaya, Hiromichi Ohta, Hiroyuki Shibata

    ISIJ International　2024

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.isijint-2024-141 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  9. Revealing the evolution of local structures in the formation process of alkaline earth metal cation-containing zeolites from glasses Peer-reviewed

    Peidong Hu, Makiko Deguchi, Hiroki Yamada, Kentaro Kobayashi, Koji Ohara, Sohei Sukenaga, Mariko Ando, Hiroyuki Shibata, Akihiko Machida, Yutaka Yanaba, Zhendong Liu, Tatsuya Okubo, Toru Wakihara

    Physical Chemistry Chemical Physics　26　(1)　116-122　2024

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/d3cp04954j 　

    ISSN： 1463-9076

    eISSN： 1463-9084

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    Pure harmotome was synthesized from a Ba-containing aluminosilicate glass. The structure-regulating role of Ba2+ and the transformation scheme were revealed by combining high-energy X-ray total scattering and anomalous X-ray scattering techniques.

  10. Mechanism of Al Coordination Change in Alkaline-earth Aluminosilicate Glasses: An Application of Bond Valence Model Peer-reviewed

    Sohei Sukenaga, Koji Kanehashi, Hiroki Yamada, Koji Ohara, Toru Wakihara, Hiroyuki Shibata

    Tetsu-to-Hagane　109　(11)　934-939　2023/11/01

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/tetsutohagane.tetsu-2023-056 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  11. Combination of In Situ Confocal Microscopy and Calorimetry to Investigate Solidification of Super‐ and Hyper‐Duplex Stainless Steels Peer-reviewed

    Yong Wang, Sohei Sukenaga, Hiroyuki Shibata, Qiang Wang, Wangzhong Mu

    steel research international　2023/08/06

    Publisher: Wiley

    DOI： 10.1002/srin.202200960 　

    ISSN： 1611-3683

    eISSN： 1869-344X

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    The solidification processes of super‐ and hyper‐duplex stainless steels (i.e., UNS S32750 and S 33 207) are investigated in situ by a high‐temperature confocal laser scanning microscope (HT‐CLSM) and differential scanning calorimetry (DSC). The variations of δ‐ferrite phase fraction during solidification are measured quantitatively. The results show that liquid L→δ‐ferrite transformation first occurs at a certain degree of supercooling during the solidification process of steel. UNS S3DSS 3207 with a higher Cr content can result in a higher nucleation temperature and faster growth of δ‐ferrite compared to those of UNS S332750 steel. Moreover, both the liquidus (TL) and solidus temperatures (TS) are increased with the increasing Cr content, while TL increases greater than TS. Electron microscopies are used to quantify the fraction and composition of each phase. Scheil equation is employed to predict the distribution behavior of the main alloying elements in the solidification process, and the predicted results are consistent with the experimental findings. This study aims to provide real‐time experimental insights into the solidification kinetics of state‐of‐the‐art high‐alloy‐grade duplex steels and benefits for controlling the casting process in the real production of stainless steels.

  12. Quantification of nitrogen in heavily doped silicon carbide by soft X-ray emission spectroscopy Peer-reviewed

    Sakiko Kawanishi, Takeshi Mitani, Masaru Takakura, Takeshi Yoshikawa, Hiroyuki Shibata

    Journal of Crystal Growth　127345-127345　2023/06

    Publisher: Elsevier BV

    DOI： 10.1016/j.jcrysgro.2023.127345 　

    ISSN： 0022-0248

  13. Microscopic Analysis of Magnetite Dissolution into Cu2S–FeS Matte with Gas Generation Using In Situ Observation Peer-reviewed

    Seung-Hwan Shin, Sakiko Kawanishi, Sohei Sukenaga, Junichi Takahashi, Hiroyuki Shibata

    Journal of Sustainable Metallurgy　in press　2023/05/24

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s40831-023-00698-x 　

    ISSN： 2199-3823

    eISSN： 2199-3831

  14. Structural Analysis Methods for Characterizing Multicomponent Melts and Glasses Processed at High Temperatures Peer-reviewed

    Shigeru SUZUKI, Sohei SUKENAGA, Tsuyoshi NISHI, Kozo SHINODA, Hiroyuki SHIBATA

    ISIJ International　63　(5)　767-778　2023/05

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.ISIJINT-2022-513 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  15. AlO1.5/SiO2 substitution effect on the viscosity of alkali silicate melts Peer-reviewed

    S. Sukenaga, R. Ikoma, M. Tashiro, Y. Chiba, S. Kawanishi, H. Shibata

    High Temperatures-High Pressures　52　(3-4)　195-210　2023

    Publisher: Old City Publishing, Inc

    DOI： 10.32908/hthp.v52.1437 　

    eISSN： 1472-3441

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    The effect of alumina addition on the viscosity of silicate melts is strongly related to the type of non-framework cations; however, the origin of these interactions is not well understood. In this study, we measured the viscosity change in selected alkali disilicate (R2O·2SiO2, R: Na or Li) melts by varying the AlO1.5/SiO2 molar ratio (AlO1.5 = 0–16.8 mol%) within the 1373–1823 K temperature range. We observed that as the molar ratio increased, sodium silicate viscosity increased, whereas lithium silicate viscosity was not affected. Aluminum-27 nuclear magnetic resonance spectra of the quenched glasses indicated that the aluminum cations in both types of alkali silicate melts were mostly present as AlO4 tetrahedra. In contrast to sodium-containing systems, the shear strain on the AlO4 tetrahedron was greater for lithium aluminosilicate glass. Our findings indicated that the degree of shear strain on AlO4 plays an essential role in controlling the viscosity of aluminosilicate systems.

  16. Mechanism of Al coordination change in alkaline-earth aluminosilicate glasses: An application of bond valence model Peer-reviewed

    Sohei Sukenaga, Koji Kanehashi, Hiroki Yamada, Koji Ohara, Toru Wakihara, Hiroyuki Shibata

    ISIJ International　2023

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.isijint-2022-398 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  17. Incorporation limit of MoO 3 in sodium borosilicate glasses Peer-reviewed

    Sohei Sukenaga, Hiroki Unozawa, Yuki Chiba, Masanori Tashiro, Sakiko Kawanishi, Hiroyuki Shibata

    Journal of the American Ceramic Society　106　(1)　293-305　2022/09/08

    Publisher: Wiley

    DOI： 10.1111/jace.18760 　

    ISSN： 0002-7820

    eISSN： 1551-2916

  18. Variation in viscosity of aluminosilicate melts with MgO/CaO molar ratio: Influence of five-fold coordinated aluminum Peer-reviewed

    Kyung-Ho Kim, Sohei Sukenaga, Masanori Tashiro, Koji Kanehashi, Sinichiro Yoshida, Hiroyuki Shibata

    Journal of Non-Crystalline Solids　587　121600-121600　2022/07

    Publisher: Elsevier BV

    DOI： 10.1016/j.jnoncrysol.2022.121600 　

    ISSN： 0022-3093

  19. Contribution of Dislocations in SiC Seed Crystals on the Melt-Back Process in SiC Solution Growth Peer-reviewed

    Sakiko Kawanishi, Hiroyuki Shibata, Takeshi Yoshikawa

    Materials　15　(5)　1796-1796　2022/02/27

    Publisher: MDPI AG

    DOI： 10.3390/ma15051796 　

    eISSN： 1996-1944

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    The melt-back process has a significant effect on the quality of solution-grown SiC crystals. However, the phenomena surrounding the SiC dissolution into the molten alloy during the melt-back process have not been clarified. In this study, the behavior of 4H-SiC dissolution into molten alloy was investigated by using high-temperature in situ observation and subsequent KOH etching, and the effects of different doping conditions and crystal polarity were studied. Local dissolutions with hexagonal pyramid-shape originating from threading screw dislocation (TSD) were observed on the C face of n-type SiC with light nitrogen doping. Our analysis of their behavior revealed that the process was governed by the spiral dissolution. In addition to the dissolution at TSD, local dissolutions at threading-edge dislocations were observed on the Si face of the same crystal. The shape of the local dissolution at the dislocation was significantly affected by the doping conditions and the polarity of the SiC crystal. This local dissolution may occur during the melt-back process, suggesting that it is important to promote the dissolution while maintaining a smooth interface through the selection of the seed crystal and by keeping the degree of interface undersaturation small.

  20. Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic Pressure Peer-reviewed

    Raquel Simancas, Masamori Takemura, Yasuo Yonezawa, Sohei Sukenaga, Mariko Ando, Hiroyuki Shibata, Anand Chokkalingam, Kenta Iyoki, Tatsuya Okubo, Toru Wakihara

    Nanomaterials　12　(3)　396-396　2022/01/26

    Publisher: MDPI AG

    DOI： 10.3390/nano12030396 　

    eISSN： 2079-4991

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    The effect of external hydrostatic pressure on the hydrothermal synthesis of the microporous silicoaluminophosphate SAPO-18 has been explored. The crystallization of the SAPO-18 phase is inhibited at 150 °C under high pressures (200 MPa) when using relatively diluted synthesis mixtures. On the contrary, the use of concentrated synthesis mixtures allowed SAPO-18 to be obtained in all the studied conditions. The obtained solids were characterized with XRD, SEM, ICP-AES, TG and 27Al and 31P MAS NMR spectroscopy. The results highlight the importance of the external pressure effect on the hydrothermal synthesis of molecular sieves and its influence on the interaction between the organic molecule and the silicoaluminophosphate network.

  21. Characterization of Aluminum Oxide Thin Films Formed on Surfaces of FeCo-V Alloys by Annealing under a Low Partial Pressure of Oxygen Peer-reviewed

    Kiyoshi Urakawa, Motohiro Kasuya, Kiyoshi Kanie, Hiroyuki Shibata, Takenobu Sato, Takashi Ebata, Shigeru Suzuki

    e-Journal of Surface Science and Nanotechnology　20　2022

    Publisher: Surface Science Society Japan

    DOI： 10.1380/ejssnt.2022-026 　

    eISSN： 1348-0391

  22. Viscosity of Na–Si–O–N–F Melts: Mixing Effect of Oxygen, Nitrogen and Fluorine Peer-reviewed

    Sohei Sukenaga, Masayuki Ogawa, Yutaka Yanaba, Mariko Ando, Hiroyuki Shibata

    Tetsu-to-Hagane　108　(3)　175-190　2022

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/tetsutohagane.tetsu-2021-108 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  23. Reduction of crystal size of silicalite-1 synthesized in fluoride-containing media via multi-stage heating with intermediate stirring Peer-reviewed

    Kenta IYOKI, Takako ONISHI, Mariko ANDO, Sohei SUKENAGA, Hiroyuki SHIBATA, Tatsuya OKUBO, Toru WAKIHARA

    Journal of the Ceramic Society of Japan　130　(1)　187-194　2022/01/01

    Publisher: Ceramic Society of Japan

    DOI： 10.2109/jcersj2.21139 　

    ISSN： 1882-0743

    eISSN： 1348-6535

  24. n -type electrical conduction in SnS thin films Peer-reviewed

    Issei Suzuki, Sakiko Kawanishi, Sage R. Bauers, Andriy Zakutayev, Zexin Lin, Satoshi Tsukuda, Hiroyuki Shibata, Minseok Kim, Hiroshi Yanagi, Takahisa Omata

    Physical Review Materials　5　(12)　2021/12/09

    Publisher: American Physical Society (APS)

    DOI： 10.1103/physrevmaterials.5.125405 　

    eISSN： 2475-9953

  25. Inhibitory Effect of MgO, FeO, CaF2, and Al2O3 Additives on the Dissolution Behavior of Ca from Silicate Mineral Phases into Water Peer-reviewed

    Fang Ruan, Sakiko Kawanishi, Sohei Sukenaga, Hiroyuki Shibata

    Metallurgical and Materials Transactions B　53　(1)　407-417　2021/12/02

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s11663-021-02376-3 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  26. Suppressing solvent compositional change during solution growth of SiC using SiC/C gradient crucible Peer-reviewed

    Sakiko Kawanishi, Hironori Daikoku, Hiroyuki Shibata, Takeshi Yoshikawa

    Journal of Crystal Growth　576　126382-126382　2021/12

    Publisher: Elsevier BV

    DOI： 10.1016/j.jcrysgro.2021.126382 　

    ISSN： 0022-0248

  27. Elucidation of Gas Formation Effect on Strong Inhibition of Magnetite Dissolution in Cu2S Through In-Situ Analysis of Reactive Interface Peer-reviewed

    Seung-Hwan Shin, Sakiko Kawanishi, Sohei Sukenaga, Makoto Ohtsuka, Junichi Takahashi, Hiroyuki Shibata

    Metallurgical and Materials Transactions B　52　(6)　3720-3729　2021/12

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s11663-021-02279-3 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  28. Thermal Conductivity of Sodium Silicate Glasses and Melts: Contribution of Diffusive and Propagative Vibration Modes

    Sohei Sukenaga, Takahiko Endo, Tsuyoshi Nishi, Hiroki Yamada, Koji Ohara, Toru Wakihara, Koji Inoue, Sakiko Kawanishi, Hiromichi Ohta, Hiroyuki Shibata

    Frontiers in Materials　8　1-8　2021/11/01

    Publisher: Frontiers Media SA

    DOI： 10.3389/fmats.2021.753746 　

    eISSN： 2296-8016

  29. Inclusion engineering in Co-based duplex entropic alloys Peer-reviewed

    Wei Wang, Yong Wang, Wangzhong Mu, Joo Hyun Park, Hui Kong, Sohei Sukenaga, Hiroyuki Shibata, Henrik Larsson, Huahai Mao

    Materials & Design　210　110097-110097　2021/11

    Publisher: Elsevier BV

    DOI： 10.1016/j.matdes.2021.110097 　

    ISSN： 0264-1275

  30. Negligible Temperature Dependence of Nitrogen Solubility in Molten Silicon–Chromium Alloys at Middle Composition Range Peer-reviewed

    Sakiko Kawanishi, Shogo Hachinoda, Hiroyuki Shibata

    MATERIALS TRANSACTIONS　62　(10)　1519-1523　2021/10/01

    Publisher: Japan Institute of Metals

    DOI： 10.2320/matertrans.mt-m2021074 　

    ISSN： 1345-9678

    eISSN： 1347-5320

  31. Interfacial reactions between pure Cu, Ni, and Ni–Cu alloys and p-type Bi2Te3 bulk thermoelectric material Peer-reviewed

    Masanori Tashiro, Sohei Sukenaga, Koichi Ikemoto, Kozo Shinoda, Tsuyoshi Kajitani, Shigeru Suzuki, Hiroyuki Shibata

    Journal of Materials Science　56　(29)　16545-16557　2021/10

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s10853-021-06358-3 　

    ISSN： 0022-2461

    eISSN： 1573-4803

  32. Investigation of interfacial reactions between metallic substrates and n-type bulk bismuth telluride thermoelectric material Peer-reviewed

    Masanori Tashiro, Sohei Sukenaga, Koichi Ikemoto, Kozo Shinoda, Tsuyoshi Kajitani, Shigeru Suzuki, Hiroyuki Shibata

    Journal of Materials Science　56　(25)　14170-14180　2021/09

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s10853-021-06198-1 　

    ISSN： 0022-2461

    eISSN： 1573-4803

  33. In Situ Interferometry for ppm-Order Solubility Analysis at High Temperatures: A Case Study of Carbon Solubility in Molten Silicon Peer-reviewed

    Sakiko Kawanishi, Takeshi Yoshikawa, Didier Chaussende, Hiroyuki Shibata

    Metallurgical and Materials Transactions B　52　(4)　2619-2625　2021/08

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s11663-021-02216-4 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  34. Reaction Kinetics Regulated Formation of Short-Range Order in an Amorphous Matrix during Zeolite Crystallization Peer-reviewed

    Ching-Tien Chen, Kenta Iyoki, Peidong Hu, Hiroki Yamada, Koji Ohara, Sohei Sukenaga, Mariko Ando, Hiroyuki Shibata, Tatsuya Okubo, Toru Wakihara

    Journal of the American Chemical Society　143　(29)　10986-10997　2021/07/28

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/jacs.1c03351 　

    ISSN： 0002-7863

    eISSN： 1520-5126

  35. Reconsideration of Viscosity Variation Mechanism in Calcium Ferrite Melt During Isothermal Melting Process Peer-reviewed

    Sohei Sukenaga, Koji Ohara, Hiroki Yamada, Toru Wakihara, Hiroyuki Shibata

    Metallurgical and Materials Transactions B　52　(4)　1945-1949　2021/06/04

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s11663-021-02227-1 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  36. Study of the Hydration Behavior of Synthetic Ferropericlase with Low Iron Oxide Concentrations to Prevent Swelling in Steel Slags International-journal International-coauthorship Peer-reviewed

    Mattia De Colle, Sohei Sukenaga, Ko Mibu, Yusuke Kato, Hisahiro Matsunaga, Pär G. Jönsson, Andrey Karasev, Hiroyuki Shibata

    Journal of Sustainable Metallurgy　7　(2)　547-558　2021/06

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s40831-021-00359-x 　

    ISSN： 2199-3823

    eISSN： 2199-3831

  37. High-temperature characterization of glasses and melts

    Sohei Sukenaga, Hiroyuki Shibata

    Encyclopedia of Materials: Technical Ceramics and Glasses　1-3　689-703　2021/05/24

    Publisher: Elsevier

    DOI： 10.1016/B978-0-12-818542-1.00024-2 　

  38. Effect of the Silicate Skeleton Structure on the Dissolution Kinetics of Calcium Silicate Mineral Phases in Water International-journal Peer-reviewed

    Fang Ruan, Sakiko Kawanishi, Sohei Sukenaga, Hiroyuki Shibata

    Metallurgical and Materials Transactions B　52　(2)　1071-1084　2021/04

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s11663-021-02079-9 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  39. SnS Homojunction Solar Cell with n‐Type Single Crystal and p‐Type Thin Film Peer-reviewed

    Sakiko Kawanishi, Issei Suzuki, Sage R. Bauers, Andriy Zakutayev, Hiroyuki Shibata, Hiroshi Yanagi, Takahisa Omata

    Solar RRL　2000708-2000708　2021/02/25

    Publisher: Wiley

    DOI： 10.1002/solr.202000708 　

    ISSN： 2367-198X

    eISSN： 2367-198X

  40. Viscosity of Na–Si–O–N–F Melts: Mixing Effect of Oxygen, Nitrogen, and Fluorine Peer-reviewed

    Sohei Sukenaga, Masayuki Ogawa, Yutaka Yanaba, Mariko Ando, Hiroyuki Shibata

    ISIJ International　60　(12)　2794-2806　2020/12/15

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.isijint-2020-326 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  41. In-situ real time observation of martensite transformation in duplex fcc+hcp cobalt based entropic alloys Peer-reviewed

    Wei Wang, Wangzhong Mu, Ziyong Hou, Sohei Sukenaga, Hiroyuki Shibata, Henrik Larsson, Huahai Mao

    Materialia　14　100928-100928　2020/12

    Publisher: Elsevier BV

    DOI： 10.1016/j.mtla.2020.100928 　

    ISSN： 2589-1529

    eISSN： 2589-1529

  42. Availability of Cr-rich Cr-Si solvent for rapid solution growth of 4H-SiC Peer-reviewed

    Sakiko Kawanishi, Yoichiro Nagamatsu, Takeshi Yoshikawa, Hiroyuki Shibata

    Journal of Crystal Growth　549　125877-125877　2020/11

    Publisher: Elsevier BV

    DOI： 10.1016/j.jcrysgro.2020.125877 　

    ISSN： 0022-0248

  43. Rapid Synthesis of Hydrothermally Stable ZSM-5 in the Presence of 1-Butanol Peer-reviewed

    Tatsushi Yoshioka, Zhendong Liu, Kenta Iyoki, Tsuneji Sano, Mariko Ando, Sohei Sukenaga, Hiroyuki Shibata, Tatsuya Okubo, Toru Wakihara

    Chemistry Letters　49　(9)　1006-1008　2020/09/05

    Publisher: The Chemical Society of Japan

    DOI： 10.1246/cl.200201 　

    ISSN： 0366-7022

    eISSN： 1348-0715

  44. Growth of Large Single Crystals of n-Type SnS from Halogen-Added Sn Flux Peer-reviewed

    Sakiko Kawanishi, Issei Suzuki, Takeo Ohsawa, Naoki Ohashi, Hiroyuki Shibata, Takahisa Omata

    Crystal Growth & Design　20　(9)　5931-5939　2020/09/02

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acs.cgd.0c00617 　

    ISSN： 1528-7483

    eISSN： 1528-7505

  45. Nucleation Control of 3C-SiC Induced by the Spiral Structure of 6H-SiC Peer-reviewed

    Sakiko Kawanishi, Ryo Watanabe, Hiroyuki Shibata

    Crystal Growth & Design　20　(7)　4740-4748　2020/07/01

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acs.cgd.0c00498 　

    ISSN： 1528-7483

    eISSN： 1528-7505

  46. Measurement of thermophysical properties of molten Si-Cr and Si-Fe alloys for design of solution growth of SiC Peer-reviewed

    Sakiko Kawanishi, Mai Abe, Chihiro Koyama, Takehiko Ishikawa, Hiroyuki Shibata

    Journal of Crystal Growth　541　2020/07/01

    DOI： 10.1016/j.jcrysgro.2020.125658 　

    ISSN： 0022-0248

  47. Experimental determination of solidified lithium disilicate crystal bandgap energy using EELS and XPS Peer-reviewed

    Masanori Tashiro, Sohei Sukenaga, Sakiko Kawanishi, Yohei Sato, Yuji Takakuwa, Hiroyuki Shibata

    Journal of the American Ceramic Society　103　(9)　5139-5144　2020/05/28

    Publisher: Wiley

    DOI： 10.1111/jace.17221 　

    ISSN： 0002-7820

    eISSN： 1551-2916

  48. Effect of the Silicate Structure on Calcium Elution Behaviors of Calcium-silicate Based Mineral Phases in Aqueous Solution Peer-reviewed

    Fang RUAN, Sakiko KAWANISHI, Sohei SUKENAGA, Hiroyuki SHIBATA

    ISIJ International　60　(3)　419-425　2020/03

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.ISIJINT-2019-263 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  49. Novel technology to produce ferromanganese alloy from Steelmaktng slag

    Sun-Joong Kim, Hiroyuki Shibata, Shin-Ya Kitamura, Katsunori Yamaguchi

    Proceedings of INFACON XIII - 13th International Ferroalloys Congress: Efficient Technologies in Ferroalloy Industry　655-662　2020

    Publisher: Public Association INFACON XIII

  50. Unique crystallization behavior in zeolite synthesis under external high pressures Peer-reviewed

    Che Tan, Zhendong Liu, Yasuo Yonezawa, Sohei Sukenaga, Mariko Ando, Hiroyuki Shibata, Yukichi Sasaki, Tatsuya Okubo, Toru Wakihara

    Chemical Communications　56　(18)　2811-2814　2020

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/c9cc09966b 　

    ISSN： 1359-7345

    eISSN： 1364-548X

    More details Close

    <p>Hydrothermal synthesis of zeolites under external high pressures generates unique crystallization behaviors that are different from the synthesis under autogenous pressure.</p>

  51. Wetting and spreading behavior of liquid iron on single crystal TiO2 substrate Peer-reviewed

    Xuan Changji, Nakajima Keiji, Shibata Hiroyuki, Jonsson Par Goran

    MATERIALS LETTERS　258　2020/01/01

    DOI： 10.1016/j.matlet.2019.126778 　

    ISSN： 0167-577X

  52. Zeolite Crystallization Triggered by Intermediate Stirring Peer-reviewed

    Chen Ching-Tien, Iyoki Kenta, Yamada Hiroki, Sukenaga Sohei, Ando Mariko, Shibata Hiroyuki, Ohara Koji, Wakihara Toni, Okubo Tatsuya

    JOURNAL OF PHYSICAL CHEMISTRY C　123　(33)　20304-20313　2019/08/22

    DOI： 10.1021/acs.jpcc.9b04778 　

    ISSN： 1932-7447

    eISSN： 1932-7455

  53. Thermal conductivity of Na2O-B2O3-SiO2 melts Peer-reviewed

    Nishi Tsuyoshi, Manako Takumi, Ohnuma Katsuya, Ohta Hiromichi, Sukenaga Sohei, Shibata Hiroyuki, Oniki Toshiro

    JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY　56　(8)　710-715　2019/08/03

    DOI： 10.1080/00223131.2019.1617206 　

    ISSN： 0022-3131

  54. Thermomigration of molten Cr-Si-C alloy in 4H-SiC at 1873–2273 K Peer-reviewed

    Sakiko Kawanishi, Takeshi Yoshikawa, Hiroyuki Shibata

    Journal of Crystal Growth　518　73-80　2019/07

    DOI： 10.1016/j.jcrysgro.2019.04.022 　

    ISSN： 0022-0248

  55. Effect of Mg2+ and fluorine on the network and highly efficient photoluminescence of Eu3+ ion in MgF2-BaO-B2O3 glasses Peer-reviewed

    Shinozaki Kenji, Sukenaga Sohei, Shibata Hiroyuki, Akai Tomoko

    JOURNAL OF THE AMERICAN CERAMIC SOCIETY　102　(5)　2531-2541　2019/05

    DOI： 10.1111/jace.16165 　

    ISSN： 0002-7820

    eISSN： 1551-2916

  56. Thermal conductivities of alkali-silicate and calcium-alkali-silicate melts Peer-reviewed

    Nishi Tsuyoshi, Ohnuma Katsuya, Tanaka Kento, Manako Takumi, Yamato Yoshifumi, Ohta Hiromichi, Sukenaga Sohei, Shibata Hiroyuki, Kakihara Toshiaki

    JOURNAL OF NON-CRYSTALLINE SOLIDS　511　36-40　2019/05/01

    DOI： 10.1016/j.jnoncrysol.2019.01.038 　

    ISSN： 0022-3093

  57. CaO-SiO2-Al2O3-R2O(R=Li, Na, K)系溶融ケイ酸塩の熱伝導率と粘性率の関係

    眞子 巧巳, 西 剛史, 太田 弘道, 助永 壮平, 柴田 浩幸

    実験力学　19　(1)　8-12　2019

    Publisher: 日本実験力学会

    ISSN： 1346-4930

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    &lt;p&gt;The thermal effusivities of CaO-SiO&lt;SUB&gt;2&lt;/SUB&gt;-Al&lt;SUB&gt;2&lt;/SUB&gt;O&lt;SUB&gt;3&lt;/SUB&gt;-R&lt;SUB&gt;2&lt;/SUB&gt;O (R=Li, Na, K) melts were measured by the front-heating front-detection laser flash method. The thermal conductivity was determined from the thermal effusivity, specific heat capacity and density. The specific heat capacity was evaluated based on the additive law, using the liquid state of respective oxides in literature values. The density was measured using Archimedes principle at room temperature in a glassy state. As a result, it was found that the thermal conductivity of CaO-SiO&lt;SUB&gt;2&lt;/SUB&gt;-Al&lt;SUB&gt;2&lt;/SUB&gt;O&lt;SUB&gt;3&lt;/SUB&gt; melt was lower than those of CaO-SiO&lt;SUB&gt;2&lt;/SUB&gt;-Al&lt;SUB&gt;2&lt;/SUB&gt;O&lt;SUB&gt;3&lt;/SUB&gt;-R&lt;SUB&gt;2&lt;/SUB&gt;O (R=Li, Na, K) melts. It was also found that the NBO/T dependence of thermal conductivities for CaO-SiO&lt;SUB&gt;2&lt;/SUB&gt;-Al&lt;SUB&gt;2&lt;/SUB&gt;O&lt;SUB&gt;3&lt;/SUB&gt;-R&lt;SUB&gt;2&lt;/SUB&gt;O (R=Li, Na, K) melts was negative. On the other hand, there was no clear relation between the thermal conductivity and the viscosity.&lt;/p&gt;

  58. Effect of interfacial phenomena on solidification behavior of a binary silicate melt

    Sohei Sukenaga, Masanori Tashiro, Hiroyuki Shibata

    Proceedings of the 13th Korea-Japan workshop on science and technology in ironmaking and steelmaking　10-14　2019/01

  59. Comparative study of aluminosilicate glass and zeolite precursors in terms of Na environment and network structure Peer-reviewed

    Hiroki Yamada, Sohei Sukenaga, Koji Ohara, Chokkalingam Anand, Mariko Ando, Hiroyuki Shibata, Tatsuya Okubo, Toru Wakihara

    Microporous and Mesoporous Materials　271　33-40　2018/11/15

    DOI： 10.1016/j.micromeso.2018.05.006 　

    ISSN： 1387-1811

  60. Determination of thermal conductivities of B2O3-SiO2 and CaO-B2O3-SiO2 melts Peer-reviewed

    Nishi Tsuyoshi, Tanaka Kento, Ohnuma Katsuya, Manako Takumi, Ohta Hiromichi, Sukenaga Sohei, Shibata Hiroyuki, Kakihara Toshiaki

    JOURNAL OF NUCLEAR MATERIALS　510　193-198　2018/11

    DOI： 10.1016/j.jnucmat.2018.08.010 　

    ISSN： 0022-3115

  61. Prediction of Influences of Co, Ni, and W Elements on Carbide Precipitation Behavior in Fe-C-V-Cr-Mo Based High Speed Steels Peer-reviewed

    Zhang Hongwei, Nakajima Keiji, Su Mengmeng, Shibata Hiroyuki, Hedstrom Peter, Wang Weixian, Lei Hong, Wang Qiang, Jonsson Par Goran, He Jicheng

    STEEL RESEARCH INTERNATIONAL　89　(10)　2018/10

    DOI： 10.1002/srin.201800172 　

    ISSN： 1611-3683

  62. Ultrafast synthesis of *BEA zeolite without the aid of aging pretreatment Peer-reviewed

    Jie Zhu, Zhendong Liu, Sohei Sukenaga, Mariko Ando, Hiroyuki Shibata, Tatsuya Okubo, Toru Wakihara

    Microporous and Mesoporous Materials　268　1-8　2018/09/15

    DOI： 10.1016/j.micromeso.2018.04.012 　

    ISSN： 1387-1811

  63. Photoluminescence and structure of Ce3+-doped BaF2-Al2O3-B2O3 glasses

    Shinozaki Kenji, Sukenaga Sohei, Shibata Hiroyuki, Ohara Koji

    JSAP Annual Meetings Extended Abstracts　2018.2　3083-3083　2018/09/05

    Publisher: The Japan Society of Applied Physics

    DOI： 10.11470/jsapmeeting.2018.2.0_3083 　

    eISSN： 2436-7613

  64. Diffusion Behavior of Mn and Si Between Liquid Oxide Inclusions and Solid Iron-Based Alloy at 1473 K Peer-reviewed

    Sun-Joong Kim, Hanae Tago, Kyung-Ho Kim, Shin-ya Kitamura, Hiroyuki Shibata

    Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　49　(3)　977-987　2018/06/01

    DOI： 10.1007/s11663-018-1233-8 　

    ISSN： 1073-5615

  65. High-Temperature Confocal Laser Scanning Microscopy Studies of Ferrite Formation in Inclusion-Engineered Steels: A Review Peer-reviewed

    Wangzhong Mu, Peter Hedström, Hiroyuki Shibata, Pär G. Jönsson, Keiji Nakajima

    JOM　70　(10)　1-13　2018/05/15

    DOI： 10.1007/s11837-018-2921-1 　

    ISSN： 1543-1851 1047-4838

  66. Estimation of thermal conductivity of silicate melts using three-dimensional thermal resistor network model Peer-reviewed

    Tsuyoshi Nishi, Hiromichi Ohta, Sohei Sukenaga, Hiroyuki Shibata

    Journal of Non-Crystalline Solids　482　9-13　2018/02/15

    DOI： 10.1016/j.jnoncrysol.2017.11.014 　

    ISSN： 0022-3093

  67. Effect of Si Content on Oxide Formation on Surface of Molten Fe-Cr-C Alloy Bath During Oxygen Top Blowing Peer-reviewed

    Ryosuke Mihara, Xu Gao, Sun-joong Kim, Shigeru Ueda, Hiroyuki Shibata, Min Oh Seok, Shin-ya Kitamura

    Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　49　(1)　146-158　2018/02/01

    DOI： 10.1007/s11663-017-1135-1 　

    ISSN： 1073-5615

  68. Preparation of nanosized SSZ-13 zeolite with enhanced hydrothermal stability by a two-stage synthetic method Peer-reviewed

    Ce Peng, Zhendong Liu, Aoki Horimoto, Chokkalingam Anand, Hiroki Yamada, Koji Ohara, Sohei Sukenaga, Mariko Ando, Hiroyuki Shibata, Takahiko Takewaki, Rino R. Mukti, Tatsuya Okubo, Toru Wakihara

    Microporous and Mesoporous Materials　255　192-199　2018

    DOI： 10.1016/j.micromeso.2017.07.042 　

    ISSN： 1387-1811

  69. Measurement of the Thermal Effisivities for AlO1.5-R2O-SiO2 (R=Li, Na) Melts Peer-reviewed

    Manako Takumi, Nishi Tsuyoshi, Ohta Hiromichi, Sukenaga Sohei, Shibata Hiroyuki

    JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS　82　(11)　419-422　2018

    DOI： 10.2320/jinstmet.JAW201803 　

    ISSN： 0021-4876

  70. Study of Two Phase Emulsion Systems Peer-reviewed

    D. Y. Song, G. S. Gupta, N. Maruoka, H. Shibata, S. Kitamura, V. Rudolph

    TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS　70　(8)　2027-2038　2017/10

    DOI： 10.1007/s12666-016-1023-4 　

    ISSN： 0972-2815

    eISSN： 0975-1645

  71. Control of crystallization behaviour of supercooled liquid composed of lithium disilicate on platinum substrate Peer-reviewed

    Masanori Tashiro, Sohei Sukenaga, Hiroyuki Shibata

    SCIENTIFIC REPORTS　7　(6078)　1-6　2017/07

    DOI： 10.1038/s41598-017-06306-9 　

    ISSN： 2045-2322

  72. Effect of Ca-Mg substitution on transport properties of aluminosilicate glasses and melts Peer-reviewed

    Sohei SUKENAGA, Kyung-Ho KIM, Koji KANEHASHI, Hiroyuki SHIBATA

    Proceedings of the 2nd ISIJ-VDEh-Jernkontoret Joint Symposium　249-252　2017/06/12

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    1714

  73. Ultrafast synthesis of high-silica erionite zeolites with improved hydrothermal stability Peer-reviewed

    Jie Zhu, Zhendong Liu, Kenta Iyoki, Chokkalingam Anand, Kaname Yoshida, Yukichi Sasaki, Sohei Sukenaga, Mariko Ando, Hiroyuki Shibata, Tatsuya Okubo, Toru Wakihara

    CHEMICAL COMMUNICATIONS　53　(50)　6796-6799　2017/06

    DOI： 10.1039/c7cc03166a 　

    ISSN： 1359-7345

    eISSN： 1364-548X

  74. Direct observation on the oxides formation behavior at bath surface of stainless steel by top blowing Ar-O2 gas Peer-reviewed

    Xu Gao, Ryosuke Mihara, Min Oh Seok, Hiroyuki Shibata, Shin-ya Kitamura

    Proc. AISTech 2017　2017/05

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    1720

  75. Oxygen Speciation in Multicomponent Silicate Glasses Using Through Bond Double Resonance NMR Spectroscopy Peer-reviewed

    Sohei Sukenaga, Pierre Florian, Koji Kanehashi, Hiroyuki Shibata, Noritaka Saito, Kunihiko Nakashima, Dominique Massiot

    JOURNAL OF PHYSICAL CHEMISTRY LETTERS　8　(10)　2274-2279　2017/05

    DOI： 10.1021/acs.jpclett.7b00465 　

    ISSN： 1948-7185

  76. Influence of Bottom Bubbling Rate on Formation of Metal Emulsion in Sn-Sb-Cu Alloy and Molten Salt System Peer-reviewed

    Duk-Yong Song, Nobuhiro Maruoka, Hiroyuki Shibata, Shin-ya Kitamurai, Naoto Sasaki

    ISIJ INTERNATIONAL　57　(2)　236-244　2017

    DOI： 10.2355/isijinternational.ISIJINT-2016-528 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  77. In situ observation of nonmetallic inclusion formation in NiTi alloys Peer-reviewed

    Fumiyoshi Yamashita, Masamitsu Wakoh, Koji Ishikawa, Hiroyuki Shibata

    Materials Transactions　58　(12)　1729-1734　2017

    DOI： 10.2320/matertrans.M2017156 　

    ISSN： 1345-9678

  78. Structural Role of Alkali Cations in Calcium Aluminosilicate Glasses as Examined Using Oxygen-17 Solid-State Nuclear Magnetic Resonance Spectroscopy Peer-reviewed

    Sohei Sukenaga, Koji Kanehashi, Hiroyuki Shibata, Noritaka Saito, Kunihiko Nakashima

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　47　(4)　2177-2181　2016/08

    DOI： 10.1007/s11663-016-0689-7 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  79. Foreword Peer-reviewed

    Hiroyuki Shibata, Sridhar Seetharaman

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　47　(4)　2082-2082　2016/08

    DOI： 10.1007/s11663-016-0684-z 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  80. Ferrite Formation Dynamics and Microstructure Due to Inclusion Engineering in Low-Alloy Steels by Ti2O3 and TiN Addition Peer-reviewed

    Wangzhong Mu, Hiroyuki Shibata, Peter Hedstrom, Par Goran Jonsson, Keiji Nakajima

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　47　(4)　2133-2147　2016/08

    DOI： 10.1007/s11663-016-0630-0 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  81. THERMAL CONDUCTIVITY OF BOROSILICATE MELT Peer-reviewed

    Tsuyoshi Nishi, Junpei Ojima, Yoshitaka Kuroda, Hiromichi Ohta, Sohei Sukenaga, Hiroyuki Shibata, Hidenori Kawashima

    Proceedings of The 10th International Conference on Molten Slags, Fluxes and Salts (MOLTEN16) Edited by: Ramana G. Reddy, Pinakin Chaubal, P. Chris Pistorius, and Uday Pal　519-524　2016/05/22

    Publisher: TMS

  82. Observation of Oxide Formation for Molten Fe-Cr-C Alloy at a High Carbon Region by Oxygen Top Blowing Peer-reviewed

    Ryosuke Mihara, Xu Gao, Shigeru Kaneko, Sunjoong Kim, Shigeru Ueda, Hiroyuki Shibata, Min Oh Seok, Shin-Ya Kitamura

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　47　(2)　1035-1051　2016/04

    DOI： 10.1007/s11663-015-0555-z 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  83. Inclusion and Microstructure Characteristics in Steels with TiN Additions Peer-reviewed

    Wangzhong Mu, Par Goran Jonsson, Hiroyuki Shibata, Keiji Nakajima

    STEEL RESEARCH INTERNATIONAL　87　(3)　339-348　2016/03

    DOI： 10.1002/srin.201500061 　

    ISSN： 1611-3683

    eISSN： 1869-344X

  84. Retraction: Wetting behavior of single crystal TiO2 by liquid iron (ISIJ International (2016) 56:5 (765–769) DOI: 10.2355/isijinternational.ISIJINT-2015-722)

    Changji Xuan, Andrey Karasev, Hiroyuki Shibata, Pär Göran Jönsson

    ISIJ International　56　(6)　1117　2016

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.56.1117 　

    ISSN： 0915-1559

  85. Wetting Behavior of Single Crystal TiO2 by Liquid Iron (Retracted article. See vol. 56, pg. 1117, 2016) Peer-reviewed

    Changji Xuan, Andrey Karasev, Hiroyuki Shibata, Par Goran Jonsson

    ISIJ INTERNATIONAL　56　(5)　765-769　2016

    DOI： 10.2355/isijinternational.ISIJINT-2015-722 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  86. Combination of In Situ Microscopy and Calorimetry to Study Austenite Decomposition in Inclusion Engineered Steels Peer-reviewed

    Wangzhong Mu, Hiroyuki Shibata, Peter Hedstrom, Par Goran Jonsson, Keiji Nakajima

    STEEL RESEARCH INTERNATIONAL　87　(1)　10-14　2016/01

    DOI： 10.1002/srin.201500008 　

    ISSN： 1611-3683

    eISSN： 1869-344X

  87. Surface tension of CaO-SiO2-Al2O3-MgO Melts Peer-reviewed

    Sohei SUKENAGA, Tomoyuki HIGO, Hiroyuki SHIBATA, Noritaka SAITO, Kunihiko NAKASHIMA

    Proceedings of Asia Steel International Conference 2015　416-417　2015/10/05

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    1630

  88. Reaction between Liquid Oxides and Solid Iron Based Alloy at 1473K Peer-reviewed

    Sun-Joong Kim, Hanae Tago, Kyung-Ho Kim, Shin-ya. Kitamura, Hiroyuki Shibata

    Proceedings of CTSSC-EMI Symposium　109-115　2015/09/03

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    1605

  89. Structural Role of Alkali Cations (Li+, Na+, or K+) in Calcium Aluminosilicate Glass by 17O Solid-State Nuclear Magnetic Resonance (NMR) Spectroscopy Peer-reviewed

    Sohei SUKENAGA, Koji KANEHASHI, Hiroyuki SHIBATA, Noritaka SAITO, Kunihiko NAKASHIMA

    Proceedings of CTSSC EMI Symposium　145-148　2015/09/03

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    1629

  90. Influence of FeO and sulfur on solid state reaction between MnO-SiO2-FeO oxides and an Fe-Mn-Si solid alloy during heat treatment at 1473 K Peer-reviewed

    Cheng-song Liu, Shu-feng Yang, Kyung-ho Kim, Jing-she Li, Hiroyuki Shibata, Shin-ya Kitamura

    INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS　22　(8)　811-819　2015/08

    DOI： 10.1007/s12613-015-1138-3 　

    ISSN： 1674-4799

    eISSN： 1869-103X

  91. Reaction Between MnO-SiO2-FeO Solid Oxide and Solid Steel Deoxidized by Si and Mn During Heat Treatment at 1473 K (1200 degrees C) Peer-reviewed

    Cheng-song Liu, Kyung-Ho Kim, Sun-Joong Kim, Jing-She Li, Shigeru Ueda, Xu Gao, Hiroyuki Shibata, Shin-Ya Kitamura

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　46　(4)　1875-1884　2015/08

    DOI： 10.1007/s11663-015-0356-4 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  92. Fundamental Research on the Production of Fe－Mn alloy from Steelmaking Slag Peer-reviewed

    Sun-Joong Kim, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of the 2nd International Conference „Advances in Metallurgical Processes & Materials“(AdMet2015)　USB　2015/06/04

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    1646

  93. Production and utilisation of iron and steelmaking slag in Japan and the application of steelmaking slag for the recovery of paddy fields damaged by Tsunami Peer-reviewed

    X. Gao, M. Okubo, N. Maruoka, H. Shibata, T. Ito, S. Y. Kitamura

    Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy　124　(2)　116-124　2015/06/01

    Publisher: Maney Publishing

    DOI： 10.1179/1743285514Y.0000000068 　

    ISSN： 1743-2855 0371-9553

  94. Application of Steelmaking Slag on the Recovery of Degraded Paddy Field Peer-reviewed

    Xu Gao, Nobuhiro Maruoka, Hiroyuki Shibata, Toyoaki Ito, Shin-ya Kitamura

    Proceedings of International Congress on Steelmaking (ICS2015)　958-961　2015/05/12

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    1645

  95. Relationship between Thermal Conductivities and Viscosities of CaO-SiO2-Al2O3-R2O (R=Na, K, Li) Melts Peer-reviewed

    Tsukasa Inoue, Junpei Ojima, Takateru Maesono, Sohei Sukenaga, Hiroyuki Shibata, Hiromichi Ohta

    Proceedings of The 6th International Congress on the Science and Technology of Steelmaking　2　843-845　2015/05/12

    More details Close

    1621

  96. Dissolution Behavior of MgO from Steelmaking Flux and Refractory Peer-reviewed

    N. Maruoka, A. Ishikawa, H. Shibata, S.-y. Kitamura

    Journal of the Technical Association of Refractories, Japan (TAIKABUTSU OVERSEAS)　34　(1)　3-9　2015

  97. Effect of CaO/SiO2 Ratio on Surface Tension of CaO-SiO2-Al2O3-MgO Melts Peer-reviewed

    Sohei Sukenaga, Tomoyuki Higo, Hiroyuki Shibata, Noritaka Saito, Kunihiko Nakashima

    ISIJ INTERNATIONAL　55　(6)　1299-1304　2015

    DOI： 10.2355/isijinternational.55.1299 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  98. Wettability of TiN by Liquid Iron and Steel Peer-reviewed

    Changji Xuan, Hiroyuki Shibata, Zhe Zhao, Par Goran Jonsson, Keiji Nakajima

    ISIJ INTERNATIONAL　55　(8)　1642-1651　2015

    DOI： 10.2355/isijinternational.ISIJINT-2014-819 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  99. Improvement of Desalted Paddy Soil by the Application of Fertilizer Made of Steelmaking Slag (Recovery of a Paddy Field Damaged by the Tsunami Using Fertilizer Made of Steelmaking Slag-1) Peer-reviewed

    Nobuhiro Maruoka, Michimasa Okubo, Hiroyuki Shibata, Xu Gao, Toyoaki Ito, Shin-ya Kitamura

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　101　(8)　445-456　2015

    DOI： 10.2355/tetsutohagane.TETSU-2014-131 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  100. Long-term Dissolution Characteristics of Various Fertilizers Made of Steelmaking Slag in a Desalted Paddy Soil Environment (Recovery of a Paddy Field Damaged by the Tsunami Using Fertilizer Made of Steelmaking Slag-2) Peer-reviewed

    Michimasa Okubo, Nobuhiro Maruoka, Hiroyuki Shibata, Xu Gao, Toyoaki Ito, Shin-ya Kitamura

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　101　(8)　457-464　2015

    DOI： 10.2355/tetsutohagane.TETSU-2014-132 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  101. Wettability of Al2O3, MgO and Ti2O3 by Liquid Iron and Steel Peer-reviewed

    Changji Xuan, Hiroyuki Shibata, Sohei Sukenaga, Par Goran Jonsson, Keiji Nakajima

    ISIJ INTERNATIONAL　55　(9)　1882-1890　2015

    DOI： 10.2355/isijinternational.ISIJINT-2014-820 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  102. Condition to form Oxide at Bath Surface by Top blown Oxygen in High Cr Steel Peer-reviewed

    Xu Gao, Shigeru Kaneko, Hiroyuki Shibata, Shin-ya Kitamura, Min Oh Suk, Sun Koo Kim

    Proceedings of 7th European Oxygen Steelmaking Congress / EOSC2014　2014/09

  103. Partial Equilibrium Prediction of Solidification and Carbide Precipitation in Ti-added High Cr Cast Irons Peer-reviewed

    Hongwei Zhang, Qiang Liu, Hiroyuki Shibata, Qiang Wang, Par Jonsson, Jicheng He, Keiji Nakajima

    ISIJ INTERNATIONAL　54　(2)　374-383　2014

    DOI： 10.2355/isijinternational.54.374 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  104. Behavior Comparison of (Al, Pb, Sn)–Molten Salt Emulsions Involving Gas Bubbling Peer-reviewed

    Nobuhiro MARUOKA, Duk-Yong SONG, Govi, S. GUPTA, Hiroyuki SHIBATA, Shin-ya KITAMURA

    14　S200-S204　2014

  105. Thermodynamic Assessment of MnO and FeO Activities in FeO-MnO-MgO-P2O5-SiO2(-CaO) Molten Slag (vol 53, pg 1325, 2013) Peer-reviewed

    Sun-Joong Kim, Jun Takekawa, Hiroyuki Shibata, Shin-ya Kitamura, Katsunori Yamaguchi, Youn-Bae Kang

    ISIJ INTERNATIONAL　54　(6)　1456-1456　2014

    DOI： 10.2355/isijinternational.54.1456 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  106. Effect of Potassium Oxide Addition on Viscosity of Calcium Aluminosilicate Melts at 1 673-1 873 K Peer-reviewed

    Tomoyuki Higo, Sohei Sukenaga, Koji Kanehashi, Hiroyuki Shibata, Takeshi Osugi, Noritaka Saito, Kunihiko Nakashima

    ISIJ INTERNATIONAL　54　(9)　2039-2044　2014

    DOI： 10.2355/isijinternational.54.2039 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  107. Reaction between MnO-SiO2-FeO Oxide and Fe-Mn-Si Solid Alloy during Heat Treatment Peer-reviewed

    Kyung-Ho Kim, Sun-Joong Kim, Hiroyuki Shibata, Shin-ya Kitamura

    ISIJ INTERNATIONAL　54　(10)　2144-2153　2014

    DOI： 10.2355/isijinternational.54.2144 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  108. Dissolution Behavior of Mg from MgO into Molten Steel Deoxidized by Al Peer-reviewed

    Akifumi Harada, Gaku Miyano, Nobuhiro Maruoka, Hiroyuki Shibata, Shin-ya Kitamura

    ISIJ INTERNATIONAL　54　(10)　2230-2238　2014

    DOI： 10.2355/isijinternational.54.2230 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  109. Kinetic Analysis of Compositional Changes in Inclusions during Ladle Refining Peer-reviewed

    Akifumi Harada, Nobuhiro Maruoka, Hiroyuki Shibata, Masafumi Zeze, Norifumi Asahara, Fuxiang Huang, Shin-ya Kitamura

    ISIJ INTERNATIONAL　54　(11)　2569-2577　2014

    DOI： 10.2355/isijinternational.54.2569 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  110. Influence of Sulfur on the Reaction between MnO-SiO2-FeO Oxide and Fe-Mn-Si Solid Alloy by Heat Treatment Peer-reviewed

    Kyung-Ho Kim, Hiroyuki Shibata, Shin-Ya Kitamura

    ISIJ INTERNATIONAL　54　(12)　2678-2686　2014

    DOI： 10.2355/isijinternational.54.2678 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  111. Emulsification of Metal in Molten Salt by Gas Bubbling Peer-reviewed

    Nobuhiro Maruoka, Duk-Yong Song, Hiroyuki Shibata, Shin-ya Kitamura, G.S. Gupta

    Proceedings of International Conference on Science and Technology of Ironmaking & Steelmaking / STIS 2013　(CD-ROM)　2013/12

  112. Recovery of Valuable Elements from Steelmaking Slag Peer-reviewed

    Sun-Joong Kim, Nobuhiro Maruoka, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of International Conference on Science and Technology of Ironmaking & Steelmaking / STIS 2013　(CD-ROM)　2013/12

  113. Comparison of Metal Emulsion Behaviors of Al, Pb, and Sn with Molten Salt, by Gas Bubbling Peer-reviewed

    Nobuhiro Maruoka, Duk-Yong Song, Hiroyuki Shibata, Shin-ya Kitamura, G.S. Gupta

    Proceedings of the 8th International Symposium on Advanced Science and Technology in Experimental Mechanics / 8th ISEM '13-Sendai　CD-ROM　2013/11

  114. Smelting reduction process Utilized by Carbon recycling gas Peer-reviewed

    Nobuhiro Maruoka, Shinpei Ono, Shintaro Narumi, Hiroyuki Shibata, Shin-ya Kitamura

    International Conference on Smart Carbon Saving and Recycling for Ironmaking（ICSRI）　55-56　2013/10

  115. Effect of K2O Addition on the Viscosity of CaO-SiO2-Al2O3 Melt Peer-reviewed

    Sohei SUKENAGA, Tomoyuki HIGO, Hiroyuki SHIBATA, Noritaka SAITO, Kunihiko NAKASHIMA

    Mineralogical Magazine　77　(5)　2283　2013/08

  116. Novel Technology to Produce Ferromanganese Alloy from Steelmaking Slag Peer-reviewed

    Sun-Joong Kim, Hiroyuki Shibata, Shin-ya Kitamura, Katsunori Yamaguchi

    Proceedings of 13th International Ferroalloys Congress　656-662　2013/06

  117. Dissolution behavior of dicalcium silicate into steelmaking slag Peer-reviewed

    Nobuhiro Maruoka, Jiang Liu, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of 5th Baosteel Biennial Academic Conference　B116-B120　2013/06

  118. Mechanism of solid-state reaction between Fe-based alloy and oxide Peer-reviewed

    Kyung-Ho Kim, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of 5th Baosteel Biennial Academic Conference　B57-B60　2013/06

  119. Kinetic Model to Predict the Change in Chemical Composition of Inclusions during Ladle Treatment Peer-reviewed

    Akifumi Harada, Nobuhiro Maruoka, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of AISTech2013　1191-1199　2013/05

  120. 転炉製錬用フラックスおよび耐火物からのMgO溶解挙動 Invited Peer-reviewed

    丸岡伸洋, 石川瑛, 柴田浩幸, 北村信也

    耐火物　65　(4)　161-167　2013/04

    Publisher:

    ISSN： 0039-8993

    More details Close

    7764

  121. Recovery of Paddy Field Damaged by Tsunami and Earthquake using Steelmaking Slag Peer-reviewed

    Xu Gao, Michimasa Okubo, Nobuhiro Maruoka, Hiroyuki Shibata, Toyoaki Ito, Shinya Kitamura

    Proceedings of 3rd International Slag Valorization Symposium　343-346　2013/03

  122. Dissolution Rate of Various Limes into Steelmaking Slag Peer-reviewed

    Nobuhiro Maruoka, Akira Ishikawa, Hiroyuki Shibata, Shin-ya Kitamura

    HIGH TEMPERATURE MATERIALS AND PROCESSES　32　(1)　15-24　2013/02

    DOI： 10.1515/htmp-2012-0049 　

    ISSN： 0334-6455

  123. Innovative Process of Manganese Recovery from Steelmaking Slag by Sulfurization Peer-reviewed

    Sun-Joong Kim, Hiroyuki Shibata, Shin-ya Kitamura, Katsunori Yamaguchi

    Proceedings of High Temperature Processing Symposium 2013　68-70　2013/02

  124. Modelling of metal-slag emulsion Peer-reviewed

    Smita Kamble, Duk-Yong Song, Abitha Dhavamani, Govind Sharan Gupta, Nobuhiro Maruoka, Shin-ya Kitamura, Hiroyuki Shibata

    HIGH TEMPERATURES-HIGH PRESSURES　42　(3)　227-236　2013

    ISSN： 0018-1544

  125. Dynamic precipitation behavior of secondary M7C3 carbides in ti-alloyed high chromium cast iron Peer-reviewed

    Qiang Liu, Hiroyuki Shibata, Peter Hedström, Pär Göran Jönsson, Keiji Nakajima

    ISIJ International　53　(7)　1237-1244　2013

    DOI： 10.2355/isijinternational.53.1237 　

    ISSN： 0915-1559

  126. Thermodynamic Assessment of MnO and FeO Activities in FeO-MnO-MgO-P2O5-SiO2(CaO) Molten Slag Peer-reviewed

    Sun-Joong Kim, Jun Takekawa, Hiroyuki Shibata, Shin-ya Kitamura, Katsunori Yamaguchi, Youn-Bae Kang

    ISIJ INTERNATIONAL　53　(8)　1325-1333　2013

    DOI： 10.2355/isijinternational.53.1325 　

    ISSN： 0915-1559

  127. Equilibrium Distribution Ratio of Phosphorus between Solid Iron and Magnesiowustite-saturated Al2O3-CaO-FetO-MgO-SiO2 Slag at 1 623 K Peer-reviewed

    Nobuhiro Maruoka, Shinpei Ono, Hiroyuki Shibata, Shin-ya Kitamura

    ISIJ INTERNATIONAL　53　(10)　1709-1714　2013

    DOI： 10.2355/isijinternational.53.1709 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  128. Influence of Slag Basicity and Temperature on Fe and Mn Distribution between Liquid Fe-Mn-Ca-O-S Matte and Molten Slag Peer-reviewed

    Sun-Joong Kim, Jun Takekawa, Hiroyuki Shibata, Shin-ya Kitamura, Katsunori Yamaguchi

    ISIJ INTERNATIONAL　53　(10)　1715-1724　2013

    DOI： 10.2355/isijinternational.53.1715 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  129. A kinetic model to predict the compositions of metal, slag and inclusions during ladle refining: Part 1. basic concept and application Peer-reviewed

    Akifumi Harada, Nobuhiro Maruoka, Hiroyuki Shibata, Shin-Ya Kitamura

    ISIJ International　53　(12)　2110-2117　2013

    DOI： 10.2355/isijinternational.53.2110 　

    ISSN： 0915-1559

  130. A Kinetic Model to Predict the Compositions of Metal, Slag and Inclusions during Ladle Refining: Part2. Condition to Control the Inclusion Composition Peer-reviewed

    Akifumi Harada, Nobuhiro Maruoka, Hiroyuki Shibata, Shin-ya Kitamura

    ISIJ INTERNATIONAL　53　(12)　2118-2125　2013

    DOI： 10.2355/isijinternational.53.2118 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  131. Thermal Conductivity Measurements of Some Synthetic Al2O3-CaO-SiO2 Slags by Means of a Front-Heating and Front-Detection Laser-Flash Method Peer-reviewed

    Hiroki Hasegawa, Yasuhiro Hoshino, Takeshi Kasamoto, Yuuki Akaida, Takaya Kowatari, Yasuhiro Shiroki, Hiroyuki Shibata, Hiromichi Ohta, Yoshio Waseda

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　43　(6)　1405-1412　2012/12

    DOI： 10.1007/s11663-012-9702-y 　

    ISSN： 1073-5615

  132. Thermal Conductivity of Molten Silicate of Al2O3-CaO-Na2O-SiO2 Measured by Means of a Front Heating-Front Detection Laser Flash Method Peer-reviewed

    Hiroki Hasegawa, Takaya Kowatari, Yasuhiro Shiroki, Hiroyuki Shibata, Hiromichi Ohta, Yoshio Waseda

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　43　(6)　1413-1419　2012/12

    DOI： 10.1007/s11663-012-9745-0 　

    ISSN： 1073-5615

  133. Dissolution Behavior of Dicalcium Silicate and Tricalcium Phosphate Solid Solution and other Phases of Steelmaking Slag in an Aqueous Solution Peer-reviewed

    Takuya Teratoko, Nobuhiro Maruoka, Hiroyuki Shibata, Shin-ya Kitamura

    HIGH TEMPERATURE MATERIALS AND PROCESSES　31　(4-5)　329-338　2012/10

    DOI： 10.1515/htmp-2012-0032 　

    ISSN： 0334-6455

  134. Influence of Partial Pressure of Sulfur and Oxygen on Distribution of Fe and Mn between Liquid Fe-Mn Oxysulfide and Molten Slag Peer-reviewed

    Sun-Joong Kim, Hiroyuki Shibata, Jun Takekawa, Shin-Ya Kitamura, Katsunori Yamaguchi, Youn-Bae Kang

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　43　(5)　1069-1077　2012/10

    DOI： 10.1007/s11663-012-9684-9 　

    ISSN： 1073-5615

    eISSN： 1543-1916

  135. Recent Development in the Investigation on Thermal Conductivity of Silicate Melts Peer-reviewed

    Hiroki Hasegawa, Hiromichi Ohta, Hiroyuki Shibata, Yoshio Waseda

    HIGH TEMPERATURE MATERIALS AND PROCESSES　31　(4-5)　491-499　2012/10

    DOI： 10.1515/htmp-2012-0085 　

    ISSN： 0334-6455

  136. Solid-State Reaction between Manganese Silicate and Fe-Mn-Si Alloy Containing Sulphur Peer-reviewed

    Kyung-Ho Kim, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of 5th International Congress on the Science and Technology of Steelmaking　2012/10/01

  137. Control of non-metallic inclusion properties in solid steel Invited Peer-reviewed

    Shin-ya Kitamura, Hiroyuki Shibata, Akifumi Harada

    Proceedings of 5th International Congress on the Science and Technology of Steelmaking　CD-ROM　2012/10/01

  138. Modeling of Ascending/Descending Velocity of Metal Droplet Emulsified in Pb-Salt System Peer-reviewed

    Duk-Yong Song, Nobuhiro Maruoka, Govind Sharan Gupta, Hiroyuki Shibata, Shin-Ya Kitamura, Smita Kamble

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　43　(4)　973-983　2012/08

    DOI： 10.1007/s11663-012-9642-6 　

    ISSN： 1073-5615

  139. Activity Measurement of FeS and MnS in Fe-Mn-S-O Metls Equilibrated with Steel Refining Slags Peer-reviewed

    Hiroyuki Shibata, Jun Takekawa, Sun-joong Kim, Shin-ya Kitamura, Katsunori Yamaguchi

    Proceedings of 4th International Conference on Process Development in Iron and Steelmaking - SCANMETⅣ-　CD-ROM　2012/06/11

  140. Study of Fluid Flow and Mixing Behaviour of a Vacuum Degasser Peer-reviewed

    M. K. Mondal, N. Maruoka, S. Kitamura, G. S. Gupta, H. Nogami, H. Shibata

    TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS　65　(3)　321-331　2012/06

    DOI： 10.1007/s12666-012-0136-7 　

    ISSN： 0972-2815

  141. Fundamental Researches on the High-speed and High-efficiency Steelmaking Reaction Invited Peer-reviewed

    Shin-ya Kitamura, Hiroyuki Shibata, Nobuhiro Maruoka

    HIGH TEMPERATURE MATERIALS AND PROCESSES　31　(3)　195-201　2012/06

    DOI： 10.1515/htmp-2012-0021 　

    ISSN： 0334-6455

  142. Thermodynamic Properties of Lead Oxide in a Mixture of Stainless Steelmaking and Nonferrous Smelting Slags Peer-reviewed

    Nobuhiro Maruoka, Shigeru Ueda, Hiroyuki Shibata, Katsunori Yamaguchi, Shin-ya Kitamura

    HIGH TEMPERATURE MATERIALS AND PROCESSES　31　(3)　273-279　2012/06

    DOI： 10.1515/htmp-2011-0139 　

    ISSN： 0334-6455

  143. Thermal Conductivity of R-Na2O-SiO2 (R=Al2O3,CaO) Melts Peer-reviewed

    Hiromichi Ohta, Hiroyuki Shibata, Hiroki Hasegawa, Takuya Kowatari, Yasuhiro Shiroki, Shin-ya Kitamura, Yoshio Waseda

    Proceedings of 9th International Conference on Molten Slags, Fluxes and Salts, MOLTEN2012　CD-ROM　2012/05/28

  144. Composition change of inclusions during ladle treatment by the reaction with slag and refractory Peer-reviewed

    Akifumi Harada, Gaku Miyano, Nobuhiro Maruoka, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of 8th International Conference on Clean Steel　CD-ROM　2012/05/14

  145. Influence of Solid CaO and Liquid Slag on Hot Metal Desulfurization Peer-reviewed

    Koichi Takahashi, Keita Utagawa, Hiroyuki Shibata, Shin-ya Kitamura, Naoki Kikuchi, Yasushi Kishimoto

    ISIJ INTERNATIONAL　52　(1)　10-17　2012

    DOI： 10.2355/isijinternational.52.10 　

    ISSN： 0915-1559

  146. Influence of Bottom Bubbling Rate on Formation of Metal Emulsion in Al-Cu Alloy and Molten Salt System Peer-reviewed

    Duk-Yong Song, Nobuhiro Maruoka, Govind Sharan Gupta, Hiroyuki Shibata, Shin-ya Kitamura, Naoto Sasaki, Yuji Ogawa, Michitaka Matsuo

    ISIJ INTERNATIONAL　52　(6)　1018-1025　2012

    DOI： 10.2355/isijinternational.52.1018 　

    ISSN： 0915-1559

  147. Behavior of Sulfur Transfer between Hot Metal and Multi-phase Slag in Hot Metal Pretreatment Invited Peer-reviewed

    Nobuhiro Maruoka, Hiroyuki Shibata, Shin-ya Kitamura, Kouichi Takahashi

    Proceedings of International Conference on Advanced Materials and Materials Processing　CD-ROM　2011/12

  148. Recovery of Manganese from Steelmaking Slag Peer-reviewed

    Sun-Joong Kim, Shin-ya Kitamura, Tetsuro Hotta, Hiroyuki Shibata, Katsunori Yamaguchi

    Proceedings of Fray International Symposium　CD-ROM　2011/11

  149. Strategy to Recover Valuable Elements from Steel Scrap and Steelmaking Slag Invited Peer-reviewed

    Shin-ya Kitamura, Hiroyuki Shibata, Nobuhiro Maruoka, Katsunori Yamaguchi

    Proceedings of Fray International Symposium　CD-ROM　2011/11

  150. Competitive Dissolution of MgO from Flux and Refractory Peer-reviewed

    Nobuhiro Maruoka, Akira Ishikawa, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of the 12th Unified International Technical Conference on Refractories　CD-ROM　2011/10

  151. Evaluation of the Flux Dissolution Rate in Steelmaking Slag. Peer-reviewed

    Nobuhiro Maruoka, Akira Ishikawa, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of the 6th European Oxygen Steelmaking Conference　USB　2011/09

  152. Effect of Chemical Composition on Oxide Transformation and MnS Precipitation Upon Oxide Particles in Fe-Cr Alloy by Heat Treatment Peer-reviewed

    Wang Mao, Wang Xin-hua, Yu Hui-xiang, Shinya Kitamura, Hiroyuki Shibata

    JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL　18　377-382　2011/08

    ISSN： 1006-706X

  153. Novel Recycling Process of Mn by Sulfurization of Molten Slag from a By-Product of Steelmaking Process Peer-reviewed

    Sun-Joong Kim, Hiroyuki Shibata, Nobuhiro Maruoka, Shinya Kitamura, Katsunori Yamaguchi

    HIGH TEMPERATURE MATERIALS AND PROCESSES　30　(4-5)　425-434　2011/08

    DOI： 10.1515/HTMP.2011.064 　

    ISSN： 0334-6455

  154. Application of confocal scanning laser microscopy to process metallurgy. Invited Peer-reviewed

    H. Shibata, S. Kitamura, T. Emi

    Proceedings of the Roderick Guthrie Honorary Symposium on Process Metallurgy　223-225　2011/06

  155. Change in chemical composition and morphology of deoxidation products in iron based alloy by heat treatment at 1473K Invited Peer-reviewed

    H. Shibata, A. Harada, S. Kitamura

    Proceedings of the Richard J. Fruehan Symposium, Physical Chemistry of Sustainable Metals　399-402　2011/06

  156. Improvement of Kinetic Model for Hot Metal Dephosphorization Peer-reviewed

    Shin-ya Kitamura, Farshid Pahlevani, Hiroyuki Shibata, Masaki Miyata, Teppei Tamura, Yoshihiko Higuchi

    Proceedings of the 4th International Conference on Modeling and Simulation on Metallurgical Process in Steelmaking,　CD-ROM　2011/06

  157. Influence of Metal Phase Density on Emulsion Formulation in Bottom Bubbling Condition. Peer-reviewed

    D.Y. Song, N. Maruoka, H. Shibata, S. Kitamura, N.Sasaki, Y.Ogawa, M.Matsuo

    Proceedings of the Roderick Guthrie Honorary Symposium on Process Metallurgy　433-440　2011/06

  158. Novel process for recycling valuable elements from steelmaking slag Invited Peer-reviewed

    S.Kitamura, H.Shibata, S.J.Kim, T.Teradoko, N.Maruoka, K.Yamaguchi

    Proceedings of 2nd International Slag Valorization Symposium　329-340　2011/04

  159. Improvement of Dephosphorization Reaction by Using Multiphase Slag Invited Peer-reviewed

    S. Kitamura, F. Pahlevani, N. Maruoka, H. Shibata

    Proceedings of High Temperature Processing Symposium 2011　11-13　2011/02

  160. Influence of Density Difference on Metal Emulsion Formation by Bottom Bubbling Condition Peer-reviewed

    D. Song, N. Maruoka, H. Shibata, S. Kitamura, N. Sasaki, Y. Ogawa, M. Matsuo

    Proceedings of High Temperature Processing Symposium 2011　69-71　2011/02

  161. Evaluation of Bubble Eye Area to Improve Gas/Liquid Reaction Rates at Bath Surfaces Peer-reviewed

    Nobuhiro Maruoka, Felicia Lazuardi, Toshiaki Maeyama, Sun-joong Kim, Alberto N. Conejo, Hiroyuki Shibata, Shin-ya Kitamura

    ISIJ INTERNATIONAL　51　(2)　236-241　2011

    DOI： 10.2355/isijinternational.51.236 　

    ISSN： 0915-1559

  162. Behavior of Vanadium and Niobium during Hot Metal Dephosphorization by CaO-SiO2-FetO Slag Peer-reviewed

    Farshid Pahlevani, Hiroyuki Shibata, Nobuhiro Maruoka, Shin-ya Kitamura, Ryo Inoue

    ISIJ INTERNATIONAL　51　(10)　1624-1630　2011

    DOI： 10.2355/isijinternational.51.1624 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  163. Mechanism of Change in Chemical Composition of Oxide Inclusions in Fe-Cr Alloys Deoxidized with Mn and Si by Heat Treatment at 1 473 K Peer-reviewed

    Hiroyuki Shibata, Koichiro Kimura, Tomoko Tanaka, Shin-ya Kitamura

    ISIJ INTERNATIONAL　51　(12)　1944-1950　2011

    DOI： 10.2355/isijinternational.51.1944 　

    ISSN： 0915-1559

  164. Change in Chemical Composition and Morphology of De-oxidation Products in Fe-Mn-Si-Nb Ally by Heat Treatment. Peer-reviewed

    Akifumi Harada, Hiroyuki Shibata, Shin-ya Kitamura

    Bulletin of the Advanced Materials Processing Building　66　(1,2)　28-32　2010/12

    Publisher:

    ISSN： 1348-4052

  165. Equilibrium distribution of impurities between solid iron and molten oxide Peer-reviewed

    NobuhiroMaruoka, Shinpei Ono, Hiroyuki Shibata, Shin-ya Kitamura

    Bulletin of the Advanced Materials Processing Building　66　(1,2)　15-20　2010/12

    Publisher:

    ISSN： 1348-4052

  166. Numerical and Experimental Investigation on Heat Propagation Through Composite Sinter Bed With Non-Uniform Voidage: Part II Prediction of Process Efficiency Peer-reviewed

    Sergey V. Komarov, Hiroyuki Shibata, Naohito Hayashi, Eiki Kasai

    JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL　17　(11)　1-6　2010/11

    DOI： 10.1016/S1006-706X(10)60161-6 　

    ISSN： 1006-706X

  167. Fundamental research to produce ferro-manganese alloy from steelmaking slag Peer-reviewed

    S. Kim, T. Hotta, H. Shibata, S. Kitamura, K. Yamaguchi

    Proceedings of the 6th European Slag Conference　183-192　2010/10

  168. Numerical and Experimental Investigation on Heat Propagation Through Composite Sinter Bed With Non-Uniform Voidage: Part I Mathematical Model and Its Experimental Verification Peer-reviewed

    Sergey V. Komarov, Hiroyuki Shibata, Naohito Hayashi, Eiki Kasai

    JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL　17　(10)　1-7　2010/10

    DOI： 10.1016/S1006-706X(10)60174-4 　

    ISSN： 1006-706X

  169. Composition change in oxide inclusions of stainless steel by heat treatment Invited Peer-reviewed

    H. Shibata, T. Tanaka, K. Kimura, S. -Y. Kitamura

    IRONMAKING & STEELMAKING　37　(7)　522-528　2010/10

    DOI： 10.1179/030192310X12700328925903 　

    ISSN： 0301-9233

  170. Simulation of Steel Refining Process in Converter Invited Peer-reviewed

    F. Pahlevani, S. Kitamura, H. Shibata, N. Maruoka

    STEEL RESEARCH INTERNATIONAL　81　(8)　617-622　2010/08

    DOI： 10.1002/srin.201000053 　

    ISSN： 1611-3683

    eISSN： 1869-344X

  171. An experimental study on the influence of particles on grain boundary migration Peer-reviewed

    Jesper Janis, Keiji Nakajima, Andrey Karasev, Hiroyuki Shibata, Pär G. Jönsson

    Journal of Materials Science　45　(8)　2233-2238　2010/04

    DOI： 10.1007/s10853-009-3908-7 　

    ISSN： 0022-2461 1573-4803

  172. Influence of Plume Eye Area on Surface Reaction Rate of Oxygen-water System Under Bottom Bubbling Condition Peer-reviewed

    N. Maruoka, F. Lazuardi, H. Shibata, S. Kitamura

    AIST Proceedings　1　1231-1241　2010/04

  173. Observed behavior of various oxide inclusions in front of a solidifying low-carbon steel shell Peer-reviewed

    Kristofer J. Malmberg, Hiroyuki Shibata, Shin-ya Kitamura, Par G. Jonsson, Seiji Nabeshima, Yasuo Kishimoto

    JOURNAL OF MATERIALS SCIENCE　45　(8)　2157-2164　2010/04

    DOI： 10.1007/s10853-009-3982-x 　

    ISSN： 0022-2461

  174. Modification of Steelmaking Slag for the Use of Arsenic Adsorbent. Peer-reviewed

    Akiya Fuwa, Kozo Shinoda, Shigeru Suzuki, Nobuhiro Maruoka, Hiroyuki Shibata, Shin-ya Kitamura

    Advanced Materials Processing Building, IMRAM　65　(1,2)　17-22　2010/01

  175. Distribution of P2O5 between Solid Solution of 2CaO center dot SiO2-3CaO center dot P2O5 and Liquid Phase Peer-reviewed

    Farshid Pahlevani, Shin-ya Kitamura, Hiroyuki Shibata, Nobuhiro Maruoka

    ISIJ INTERNATIONAL　50　(6)　822-829　2010

    ISSN： 0915-1559

    eISSN： 1347-5460

  176. Influence of Bottom Bubbling Condition on Metal Emulsion Formation in Lead-Salt System Peer-reviewed

    Duk-Yong Song, Nobuhiro Maruoka, Toshiaki Maeyama, Hiroyuki Shibata, Shin-ya Kitamura

    ISIJ INTERNATIONAL　50　(11)　1539-1545　2010

    DOI： 10.2355/isijinternational.50.1539 　

    ISSN： 0915-1559

  177. Measurement for Thermal Effusivity of AlxGa1-xN Alloys Using Thermoreflectance with Periodic Heating Peer-reviewed

    Hiroyuki Shibata, Hiromichi Ohta, Takashi Nemoto, Shun Nagayama, Yoshio Waseda, Katsushi Fujii, K. Thomas Jacob

    HIGH TEMPERATURE MATERIALS AND PROCESSES　29　(5-6)　515-522　2010

    ISSN： 0334-6455

    eISSN： 2191-0324

  178. Behavior of Lead in the Steelmaking Slag Mixed with Non-ferrous Smelting Slag Peer-reviewed

    Nobuhiro Maruoka, Shin-ya Kitamura, Hiroyuki Shibata, Shigeru Ueda, Katsunori Yamaguchi

    Bulletin of the Institute for Advanced Materials Processing Building, IMRAM, Tohoku University　65　(1,2)　7-12　2009/12

    Publisher:

    ISSN： 1348-4052

  179. Kinetic Model of Dephosphorization in Converter Peer-reviewed

    Farshid Pahlevani, Shin-ya Kitamura, Hiroyuki Shibata, Nobuhiro Maruoka

    Proceedings of 3rd International Conference on Simulation and Modeling of Metallurgical Processes in Steelmaking. SteelSim 2009,　2009/09

  180. Formation of metal emulsion in slag phase by gas bubbling Peer-reviewed

    Nobuhiro Maruoka, Toshiaki Maeyama, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of Asia Steel International Conference, AsiaSteel2009　(s3)　24　2009/05

  181. Analysis of Dephosphorization Reaction Using a Simulation Model of Hot Metal Dephosphorization by Multiphase Slag Peer-reviewed

    Shin-ya Kitamura, Ken-ichiro Miyamoto, Hiroyuki Shibata, Nobuhiro Maruoka, Michitaka Matsuo

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　95　(3)　A313-A320　2009/03

    DOI： 10.2355/isijinternational.49.1333 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  182. Distribution of P2O5 between Solid Dicalcium Silicate and Liquid Phases in CaO-SiO2-Fe2O3 System Peer-reviewed

    Ken-ichi Shimacchi, Shin-ya Kitamura, Hiroyuki Shibata

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　95　(3)　A229-A235　2009/03

    DOI： 10.2355/isijinternational.49.505 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  183. Analysis of Dephosphorization Reaction Using a Simulation Model of Hot Metal Dephosphorization by Multiphase Slag Peer-reviewed

    Shin-ya Kitamura, Ken-ichiro Miyamoto, Hiroyuki Shibata, Nobuhiro Maruoka, Michitaka Matsuo

    ISIJ INTERNATIONAL　49　(9)　1333-1339　2009

    ISSN： 0915-1559

  184. Distribution of P2O5 between Solid Dicalcium Silicate and Liquid Phases in CaO-SiO2-Fe2O3 System Peer-reviewed

    Ken-ichi Shimauchi, Shin-ya Kitamura, Hiroyuki Shibata

    ISIJ INTERNATIONAL　49　(4)　505-511　2009

    ISSN： 0915-1559

    eISSN： 1347-5460

  185. Degree of Undercooling and Contact Angle of Pure Iron at 1 933 K on Single-crystal Al2O3, MgO, and MgAl2O4 under Argon Atmosphere with Controlled Oxygen Partial Pressure Peer-reviewed

    Hiroyuki Shibata, Yusuke Watanabe, Keiji Nakajima, Shin-ya Kitamura

    ISIJ INTERNATIONAL　49　(7)　985-991　2009

    DOI： 10.2355/isijinternational.49.985 　

    ISSN： 0915-1559

  186. Distribution of P2O5 between solid dicalcium silicate and liquid phases in CaO-SiO2-Fe2O3 system Peer-reviewed

    Ken-Ichi Shimauchi, Shin-Ya Kitamura, Hiroyuki Shibata

    Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan　95　(3)　229-235　2009

    DOI： 10.2355/tetsutohagane.95.229 　

    ISSN： 0021-1575

  187. Analysis of Dephosphorization Reaction Using a Simulation Model of Hot Metal Dephosphorization by Multiphase Slag Peer-reviewed

    北村信也, 宮本健一郎, 柴田浩幸, 丸岡伸洋, 松尾充高

    鉄と鋼　95　(3)　313-320　2009

    DOI： 10.2355/tetsutohagane.95.313 　

    ISSN： 0021-1575

  188. Mass Transfer of P2O5 between Liquid Slag and Solid Solution of 2CaO center dot SiO2 and 3CaO center dot P2O5 Peer-reviewed

    Shin-ya Kitamura, Shinya Saito, Keita Utagawa, Hiroyuki Shibata, David G. C. Robertson

    ISIJ INTERNATIONAL　49　(12)　1838-1844　2009

    DOI： 10.2355/isijinternational.49.1838 　

    ISSN： 0915-1559

  189. SIMS depth profiles of alloying elements in surface layers formed in Cu-based alloys during annealing Peer-reviewed

    Shigeru Suzuki, Hiroyuki Shibata, Masuo Ito, Tarou Kimura

    APPLIED SURFACE SCIENCE　255　(4)　1327-1330　2008/12

    DOI： 10.1016/j.apsusc.2008.05.116 　

    ISSN： 0169-4332

  190. 鉄鋼スラグからの合金元素回収に関する基礎検討 Peer-reviewed

    北村信也, 柴田浩幸

    東北大学多元物質科学研究所素材工学研究彙報　64　(1,2)　7-12　2008/12

    Publisher:

    ISSN： 1348-4052

  191. In situ studies of the agglomeration phenomena for calcium-alumina inclusions at liquid steel-liquid slag interface and in the slag Peer-reviewed

    J. Wikstrom, K. Nakajima, H. Shibata, A. Tilliander, P. Jonsson

    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING　495　(1-2)　316-319　2008/11

    DOI： 10.1016/j.msea.2007.09.084 　

    ISSN： 0921-5093

  192. In situ studies of misch-metal particle behavior on a molten stainless steel surface Peer-reviewed

    J. Appelberg, K. Nakajima, H. Shibata, A. Tilliander, P. Jonsson

    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING　495　(1-2)　330-334　2008/11

    DOI： 10.1016/j.msea.2007.12.051 　

    ISSN： 0921-5093

  193. In situ studies of agglomeration between Al2O3-CaO inclusions at metal/gas, metal/slag interfaces and in slag Peer-reviewed

    J. Wikstrom, K. Nakajima, H. Shibata, A. Tilliander, P. Jonsson

    IRONMAKING & STEELMAKING　35　(8)　589-599　2008/11

    DOI： 10.1179/174328108X284589 　

    ISSN： 0301-9233

  194. Modification of Stainless Steel Slag by Mixing the Nonferrous Slag Peer-reviewed

    Nobuhiro Maruoka, Hiroyuki Shibata, Shigeru Ueda, Katsunori Yamaguchi, Shin-ya Kitamura

    Proceedings of the 4th International Congress on the Science and Technology of Steelmaking, ICS2008　140-143　2008/10

  195. Stability of Deoxidation Products in Si-Mn Deoxidized Stainless Steel Peer-reviewed

    Koichiro KIMURA, Hiroyuki SHIBATA, Tomoko TANAKA, Nobuhiro MARUOKA, Shinya KITAMURA

    Proceedings of the 4th International Congress on the Science and Technology of Steelmaking, ICS2008　449-452　2008/10

  196. Phosphorus Transfer between Liquid Slag and 2CaO-SiO2-3CaO-P2O5 Solid Solution Peer-reviewed

    Keita UTAGAWA, Kenichi SHIMAUCHI, Hiroyuki SHIBATA, Nobuhiro MARUOKA, Shinya KITAMURA

    Proceedings of the 4th International Congress on the Science and Technology of Steelmaking, ICS2008　586-589　2008/10

  197. Kinetic model of hot metal dephosphorization by liquid and solid coexisting slags Peer-reviewed

    Shin-Ya Kitamura, Hiroyuki Shibata, Nobuhiro Maruoka

    STEEL RESEARCH INTERNATIONAL　79　(8)　586-590　2008/08

    DOI： 10.2374/SRI08SP003-79-2008-586 　

    ISSN： 1611-3683

  198. Simulation Model of Dephosphorization by Liquid and Solid Coexisting Slag Peer-reviewed

    Shin-ya Kitamura, Hiroyuki Shibata, Nobuhiro Maruoka

    Proceedings of the 3rd International Conference of Process Development in Iron and Steelmaking, SCANMET III　283-294　2008/06

  199. Influence of bottom stirring conditions on gas-liquid reaction rate Peer-reviewed

    Nobuhiro Maruoka, Felicia Lazuardi, Toshiaki Maeyama, Hiroshi Nogami, G.S.Gupta, Hiroyuki Shibata, Shin-ya Kitamura

    Proceedings of the 3rd International Conference of Process Development in Iron and Steelmaking, SCANMET III　449-458　2008/06

  200. The importance of dicalcium-silicate on hot metal dephosphorization reaction Peer-reviewed

    Shin-ya Kitamura, Hiroyuki Shibata, Ken-ichi Shimauchi, Shin-ya Saito

    REVUE DE METALLURGIE-CAHIERS D INFORMATIONS TECHNIQUES　105　(5)　263-271　2008/05

    DOI： 10.1051/metal:2008040 　

    ISSN： 0035-1563

  201. Chemical State of Chromium in CaO-SiO2 Base Oxides Annealed under Different Conditions Peer-reviewed

    Kozo Shinoda, Hirotaka Hatakeda, Nobuhiro Maruoka, Hiroyuki Shibata, Shinya Kitamura, Shigeru Suzuki

    ISIJ INTERNATIONAL　48　(10)　1404-1408　2008

    DOI： 10.2355/isijinternational.48.1404 　

    ISSN： 0915-1559

  202. Chemical State and Dissolution Characteristics of Cr in Steel-making Slag Peer-reviewed

    Hirotaka Htakeda, Nobuhiro Maruoka, Hiroyuki Shibata, Shinya Kitamura, Kozo Shinoda, Shigeru Suzuki

    Bulletin of the Advanced Materials Processing Building, IMRAM, Tohoku University　63　(1,2)　25-31　2007/12

    Publisher:

    ISSN： 1348-4052

  203. Development of Stainless-steel Refining Slag Recycling and Waste Heat Recovery System Peer-reviewed

    Nobuhiro Maruoka, Hirotaka Hatakeda, Kozo Shinoda, Hiroyuki Shibata, Shigeru Suzuki, Shinya Kitamura

    Bulletin of the Advanced Materials Processing Building, IMRAM, Tohoku University　63　(1,2)　32-37　2007/12

    Publisher:

    ISSN： 1348-4052

  204. Dissolution Behavior of Solid Oxides in Molten Slag Peer-reviewed

    Nobuhiro Maruoka, Hiroyuki Shibata, Shin-ya Kitamura

    Bulletin of the Advanced Materials Processing Building, IMRAM, Tohoku University　63　(1,2)　38-43　2007/12

    Publisher:

    ISSN： 1348-4052

  205. The Effect of Additional Elements on the Glass Forming Ability of Liquid Alloys with Reference to the Liquid Structure. Peer-reviewed

    Yoshio Waseda, Hiroyuki Shibara

    SOZAIKEN IHO　63　(1,2)　96-110　2007/12

    Publisher:

    ISSN： 1348-4052

  206. alpha-catenin is essential in intestinal adenoma formation Peer-reviewed

    Shibata Hiroyuki, Takano Hiroshi, Ito Masaki, Shioya Hisashi, Hirota Morihisa, Matsumoto Hiroshi, Kakudo Yuichi, Ishioka Chikashi, Akiyama Tetsu, Kanegae Yumi, Saito Izumu, Noda Tetsuo

    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA　104　(46)　18199-18204　2007/11/13

    DOI： 10.1073/pnas.0705730104 　

    ISSN： 0027-8424

  207. High thermal conductivity of gallium nitride (GaN) crystals grown by HVPE process Peer-reviewed

    Hiroyuki Shibata, Yoshio Waseda, Hiromichi Ohta, Kazumasa Kiyomi, Kenji Shimoyama, Kenji Fujito, Hirobumi Nagaoka, Yuji Kagamitani, Rayko Simura, Tsuguo Fukuda

    MATERIALS TRANSACTIONS　48　(10)　2782-2786　2007/10

    DOI： 10.2320/matertrans.MRP2007109 　

    ISSN： 1345-9678

    eISSN： 1347-5320

  208. Kinetic Model of Hot Metal Dephosphorization by Liquid and Solid Coexisting Slag Peer-reviewed

    Shinya Kitamura, Hiroyuki Shibata

    Proceedings of 2nd International Conference of Simulation and Modelling of Metallurgical Processes in Steelmaking　72-77　2007/09/12

  209. Growth and characterization of Tm-doped Y2O3 single crystals Peer-reviewed

    J. H. Mun, A. Jouini, A. Novoselov, Y. Guyot, A. Yoshikawa, H. Ohta, H. Shibata, Y. Waseda, G. Boulon, T. Fukuda

    OPTICAL MATERIALS　29　(11)　1390-1393　2007/07

    DOI： 10.1016/j.optmat.2006.03.042 　

    ISSN： 0925-3467

  210. Study of Inclusion Interaction on Molten REM-Al-Deoxidized Fe20%Cr Stainless Steel Surface Peer-reviewed

    N.Kojola, H.Shibata, M.Andersson, P.Jonsson, S.Kitamura, K.Nakajima

    Proceedings of International Conference on CLEAN STEEL 7　479-487　2007/06/04

  211. Thermal diffusivity of Zr-based bulk glass alloys in the liquid state Peer-reviewed

    Hiroyuki Shibata, Shunsuke Nishihata, Hiromichi Ohta, Shigeru Suzuki, Yoshio Waseda, Muneyuki Imafuku, Junichi Saida, Akihisa Inoue

    MATERIALS TRANSACTIONS　48　(4)　886-888　2007/04

    DOI： 10.2320/matertrans.48.886 　

    ISSN： 1345-9678

    eISSN： 1347-5320

  212. Crystal growth and characterization of Yb3+-doped Gd3Ga5O12 Peer-reviewed

    A. Novoselov, Y. Kagamitani, T. Kasamoto, Y. Guyot, H. Ohta, H. Shibata, A. Yoshikawa, G. Boulon, T. Fukuda

    MATERIALS RESEARCH BULLETIN　42　(1)　27-32　2007/01

    DOI： 10.1016/j.materresbull.2006.05.010 　

    ISSN： 0025-5408

  213. Relation between local structure and glass forming ability of liquid alloys Peer-reviewed

    Y. Waseda, H. S. Chen, K. T. Jacob, H. Shibata

    HIGH TEMPERATURE MATERIALS AND PROCESSES　26　(5-6)　403-416　2007

    DOI： 10.1515/HTMP.2007.26.5-6.403 　

    ISSN： 0334-6455

    eISSN： 2191-0324

  214. Si-Mn脱酸ステンレス鋼における脱酸生成物の安定性 Peer-reviewed

    北村信也, 柴田浩幸, 田中智子

    東北大学多元物質科学研究所素材工学研究彙報　62　(1,2)　18-23　2006/12

    Publisher:

    ISSN： 1348-4052

  215. 製鋼スラグにおける燐酸の分配 Peer-reviewed

    北村信也, 柴田浩幸, 斎藤伸也

    東北大学多元物質科学研究所素材工学研究彙報　62　(1,2)　24-29　2006/12

    Publisher:

    ISSN： 1348-4052

  216. Controlled undercooling of liquid iron in contact with ZrO2 and MgO substrates under varying oxygen partial pressures Peer-reviewed

    Martin E. Valdez, H. Shibata, Alan W. Cramb

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　37　(6)　959-965　2006/12

    DOI： 10.1007/BF02735018 　

    ISSN： 1073-5615

  217. Controlled undercooling of liquid iron in contact with Al2O3 substrates under varying oxygen partial pressures Peer-reviewed

    Martin E. Valdez, Pello Uranga, Katsuhiro Fuchigami, H. Shibata, Alan W. Cramb

    METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE　37　(5)　811-821　2006/10

    DOI： 10.1007/s11663-006-0063-2 　

    ISSN： 1073-5615

  218. Thermal and optical properties of Yb3+-doped Y2O3 single crystal grown by the micro-pulling-down method Peer-reviewed

    Ji Hun Mun, Anis Jouini, Andrey Novoselov, Akira Yoshikawa, Tsuyoshi Kasamoto, Hiromich Ohta, Hiroyuki Shibata, Minoru Isshiki, Yoshio Waseda, Georges Boulon, Tsuguo Fukuda

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS　45　(7)　5885-5888　2006/07

    DOI： 10.1143/JJAP.45.5885 　

    ISSN： 0021-4922

  219. Effect of Dicalcium Silicate on Hot Metal Dephosphorization Peer-reviewed

    Shinya Kitamura, Hiroyuki Shibata, Shinya Saito

    Proceedings of Asia Steel International Conference 2006　448-452　2006/05/09

  220. Estimation of heat transfer of a front-heating front-detection laser flash method measuring thermal conductivity for silicate melts at high temperatures Peer-reviewed

    H Ohta, H Shibata, T Kasamoto

    ISIJ INTERNATIONAL　46　(3)　434-440　2006

    ISSN： 0915-1559

  221. Precipitation behavior of copper, tin and manganese sulfide at high temperature in Fe-10%Cu-0.5%Sn alloys Peer-reviewed

    K Yamamoto, H Shibata, S Mizoguchi

    ISIJ INTERNATIONAL　46　(1)　82-88　2006

    DOI： 10.2355/isijinternational.46.82 　

    ISSN： 0915-1559

  222. Some aspects on grain refining additions with focus on clogging during casting Peer-reviewed

    M Andersson, J Appelberg, A Tilliander, K Nakajima, H Shibata, S Kitamura, L Jonsson, P Jonsson

    ISIJ INTERNATIONAL　46　(6)　814-823　2006

    DOI： 10.2355/isijinternational.46.814 　

    ISSN： 0915-1559

  223. Thermal properties of bulk glassy alloys Peer-reviewed

    Yoshio Waseda, Hiroyuki Shibata, Hiromichi Ohta

    SOHN INTERNATIONAL SYMPOSIUM ADVANCED PROCESSING OF METALS AND MATERIALS, VOL 1　1　649-+　2006

  224. A New Sample Cell for Measuring Thermal Diffusivity of Liquids by Means of Laser Fash Technique Peer-reviewed

    Hiroyuki SHIBATA, Shouhei MAKIHARA, Katsutoshi YAMAMOTO, Hiromichi OHTA, Atsushi MURAMATSU

    Bulletin of the Advanced Materials Processing Building, IMRAM, Tohoku University　61　(1)　64-68　2005/12

    Publisher:

    ISSN： 1348-4052

    More details Close

    A new sample cell has been developed for measuring thermal diffusivity of a liquid sample at room temperature. The validity and usefulness of the sample cell presently developed was confirmed by determining thermal diffusivity values of water and five organic liquids. The results were found to agree well with the literature values. The sample cell was also applied to evaluate thermal properties of suspension with Ni-Zn nanoparticles. The thermal diffusivity values of Ni-Zn nanoparticle suspensions linearly increase with increasing the particle concentration and the increment of the 0.1mol/l sample case is found to be about 9% as compared to the solvent alone.

  225. In-situ observed dynamics of peritectic solidification and delta/gamma transformation of Fe-3 to 5 At. Pct Ni alloys Peer-reviewed

    Y Arai, T Emi, H Fredriksson, H Shibata

    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE　36A　(11)　3065-3074　2005/11

    ISSN： 1073-5623

  226. On crystal growth and characterization of Yb3+-doped Gd3Ga5O12 Peer-reviewed

    Andrey Novoselov, Akira Yoshikawa, Yuji Kagamitani, H. Shibata, Tsuguo Fukuda, T. Kasamoto, H. Ohta, Yannick Guyot, Georges Boulon

    Proceedings of 6th International Conference on Single Crystal Growth and Heat & Mass Transfer　338-344　2005/09/25

  227. Measurement of thermal transport properties for molten silicate glasses at high temperatures by means of a novel laser flash technique Peer-reviewed

    Hiroyuki Shibata, Atsushi Suzuki, Hiromichi Ohta

    Materials Transactions　46　(8)　1877-1881　2005/08

    DOI： 10.2320/matertrans.46.1877 　

    ISSN： 1345-9678

  228. Defective or effective? Tramp elements in steels Peer-reviewed

    K Yamamoto, H Shibata, S Mizoguchi

    TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS　58　(4)　695-702　2005/08

    ISSN： 0019-493X

  229. Defective or effective? - Tramp elements in steels- Invited

    Ken-ichi Yamamoto, Hiroyuki Shibata, Shozo Mizoguchi

    ICSSP-2004 November 17-20, 2004 Bangalore, India　2004/11/17

  230. Systematic measurement of thermal diffusivity of Pd40Cu 40-xNixP20 (x=0,10,40) alloys in liquid, glassy, crystallized, and supercooled liquid states by the laser flash method Peer-reviewed

    Tsuyoshi Nishi, Hiroyuki Shibata, Hiromichi Ohta, Nobuyuki Nishiyama, Akihisa Inoue, Yoshio Waseda

    Physical Review B - Condensed Matter and Materials Physics　70　(17)　1-5　2004/11

    DOI： 10.1103/PhysRevB.70.174204 　

    ISSN： 0163-1829

  231. Systematic measurement of thermal diffusivity of Pd40Cu40-xNixP20 (x=0,10,40) alloys in liquid, glassy, crystallized, and supercooled liquid states by the laser flash method Peer-reviewed

    T Nishi, H Shibata, H Ohta, N Nishiyama, A Inoue, Y Waseda

    PHYSICAL REVIEW B　70　(17)　174204-1-174204-5　2004/11

    DOI： 10.1103/PhysRevB.70.174204 　

    ISSN： 2469-9950

    eISSN： 2469-9969

  232. Precipitation Behavior of Cu and MnS at High Temperature in Fe-10mass%Cu Alloys Peer-reviewed

    山本研一, 柴田浩幸, 中島敬治, 溝口庄三

    鉄と鋼　90　(10)　781-787　2004/10

    DOI： 10.2355/tetsutohagane1955.90.10_781 　

    ISSN： 0021-1575

  233. Precipitation Behavior of CuS and MnS at High Temperature in Fe-C-Sn Steels Peer-reviewed

    山本研一, 柴田浩幸, 中島敬治, 溝口庄三

    鉄と鋼　90　(10)　788-794　2004/10

    DOI： 10.2355/tetsutohagane1955.90.10_788 　

    ISSN： 0021-1575

  234. The Contact Angle between Liquid Iron and a Single -Crystal Magnesium Oxide Substrate at 1873 K. Peer-reviewed

    Hiroyuki Shibata, Xiaofagn Jiang, Martin Valdez, Alan W. Cramb

    Metallurgical and Materials Transactions B　35B　179-181　2004/04

  235. Electrical resistivity measurements of Pd40Cu 30Ni10P20 alloy in supercooled liquid and liquid state Peer-reviewed

    Tsuyoshi Nishi, Hiroyuki Shibata, Hiromichi Ohta, Osami Haruyama, Nobuyuki Nishiyama, Akihisa Inoue, Yoshio Waseda

    Materials Transactions　45　(8)　2584-2586　2004

    Publisher: Japan Institute of Metals (JIM)

    DOI： 10.2320/matertrans.45.2584 　

    ISSN： 1345-9678

  236. Specific heat measurements of Pd-based alloy in the liquid state by the heat-flux type DSC with triple cells Peer-reviewed

    Tsuyoshi Nishi, Hiroyuki Shibata, Hiromichi Ohta, Nobuyuki Nishiyama, Akihisa Inoue, Yoshio Waseda

    Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals　68　(8)　499-502　2004

    Publisher: Japan Institute of Metals (JIM)

    DOI： 10.2320/jinstmet.68.499 　

    ISSN： 0021-4876

  237. Measurement of physical properties of slag formed around the raceway in the working blast furnace Peer-reviewed

    S Inaba, Y Kimura, H Shibata, H Ohta

    ISIJ INTERNATIONAL　44　(12)　2120-2126　2004

    DOI： 10.2355/isijinternational.44.2120 　

    ISSN： 0915-1559

  238. Evaluation of the Heat Leakage in the thermal Diffusibity Measurement of Molten Metals by a Laser Flash method

    T.Nishi, H.Ohta, H. Shibata, Y.Waseda

    International Journal of thermophysics　24　(6)　1735-1751　2003/06

  239. Properties of Quenched and Aged High-Purity Cu-Ti and Cu-Ti-P Alloys Peer-reviewed

    Kazutaka Hirabayashi, Shigeru Suzuki, Hiroyuki Shibata, Kouji Mimura, Minoru Isshiki, Yoshio Waseda

    Journal of the JRICu　42　(1)　93-97　2003/04

    Publisher:

    ISSN： 1347-7234

  240. Properties of Quenched and Aged High-Purity Cu-Ti and Cu-Ti-P Alloys Peer-reviewed

    kazutaka Hirabayashi, Shigeru Suzuki, Hiroyuki Shibata, Kouji Mimura, Minoru Isshiki, Yoshio Waseda

    Journal of the JRICu　42　(1)　93-97　2003/04

    Publisher:

    ISSN： 1347-7234

  241. Electrical and thermal conductivities in quenched and aged high-purity Cu-Ti alloys Peer-reviewed

    S. Suzuki, K. Hirabayashi, H. Shibata, K. Mimura, M. Isshiki, Y. Waseda

    Scripta Materialia　48　(4)　431-435　2003/02

    DOI： 10.1016/S1359-6462(02)00441-4 　

    ISSN： 1359-6462

  242. Direct observation of solidification and solid-phase transformations Peer-reviewed

    T Emi, H Shibata

    SOLIDIFICATION AND CASTING　298-325　2003

  243. Recent progress in thermal diffusivity measurement of molten oxides by the laser flash method Peer-reviewed

    H Ohta, H Shibata, Y Waseda

    METALLURGICAL AND MATERIALS PROCESSING: PRINCIPLES AND TECHNOLOGIES, VOL 1　1　453-462　2003

  244. The Contact Angle between Liquid Iron and a Single Crystal, Alumina Substrate at 1873 K: Effects of Oxygen and Droplet Size Peer-reviewed

    S. Ueda, H. Shi, X. Jiang, H. Shibata, A. W. Cramb

    Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　34　(5)　503-508　2003

    Publisher: Minerals, Metals and Materials Society

    DOI： 10.1007/s11663-003-0017-x 　

    ISSN： 1073-5615

  245. Thermal diffusivities and conductivities of molten germanium and silicon Peer-reviewed

    Tsuyoshi Nishi, Hiroyuki Shibata, Hiromichi Ohta

    Materials Transactions　44　(11)　2369-2374　2003

    Publisher: Japan Institute of Metals (JIM)

    DOI： 10.2320/matertrans.44.2369 　

    ISSN： 1345-9678

  246. Thermal conductivities of molten iron, cobalt, and nickel by laser flash method Peer-reviewed

    Tsuyoshi Nishi, Hiroyuki Shibata, Hiromichi Ohta, Yoshio Waseda

    Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science　34　(12)　2801-2807　2003

    Publisher: Minerals, Metals and Materials Society

    DOI： 10.1007/s11661-003-0181-2 　

    ISSN： 1073-5623

  247. Evaluation of the Effective Sample Temperature in Thermal Diffusivity Measurements Using the Laser Flash Method Peer-reviewed

    H. Ohta, T. Baba, H. Shibata, Y. Waseda

    International Journal of Thermophysics　23　(6)　1659-1668　2002/11

    DOI： 10.1023/A:1020702320037 　

    ISSN： 0195-928X

  248. Measurement of heat-transfer coefficient of refractory for BF Peer-reviewed

    WH Tong, FM Shen, H Shibata, WZ Wang, YS Yang, Y Waseda, R Takahashi, J Yagi

    ACTA METALLURGICA SINICA　38　(9)　983-988　2002/09

    ISSN： 0412-1961

  249. Thermal diffusivity measurements of oxide and metallic melts at high temperature by the laser flash method Peer-reviewed

    Y Waseda, H Ohta, H Shibata, T Nishi

    HIGH TEMPERATURE MATERIALS AND PROCESSES　21　(6)　387-398　2002

    ISSN： 0334-6455

  250. Thermal diffusivity of molten carbonates at elevated temperatures Peer-reviewed

    Hiroyuki Shibata, Hiromichi Ohta, Hiroyuki Yoshida

    High Temperature Materials and Processes　21　(3)　139-142　2002

    Publisher: Freund and Pettman Publishers

    DOI： 10.1515/HTMP.2002.21.3.139 　

    ISSN： 0334-6455

  251. Measurement of thermal diffusivity of steels at elevated temperature by a laser flash method Peer-reviewed

    T Nishi, H Shibata, K Tsutsumi, H Ohta, Y Waseda

    ISIJ INTERNATIONAL　42　(5)　498-503　2002

    DOI： 10.2355/isijinternational.42.498 　

    ISSN： 0915-1559

  252. A novel laser flash method for measuring thermal diffusivity of molten metals Peer-reviewed

    H Shibata, K Okubo, H Ohta, Y Waseda

    JOURNAL OF NON-CRYSTALLINE SOLIDS　312-14　172-176　2002

    DOI： 10.1016/S0022-3093(02)01682-4 　

    ISSN： 0022-3093

  253. Effect of solidification of mold fluxes on the heat transfer in casting mold Peer-reviewed

    JW Cho, H Shibata

    JOURNAL OF NON-CRYSTALLINE SOLIDS　282　(1)　110-117　2001/04

    DOI： 10.1016/S0022-3093(01)00333-7 　

    ISSN： 0022-3093

  254. Novel laser flash technique to measure thermal effusivity of highly viscous liquids at high temperature Peer-reviewed

    Hiromichi Ohta, Hiroyuki Shibata, Atsushi Suzuki, Yoshio Waseda

    Review of Scientific Instruments　72　(3)　1899-1903　2001/03

    DOI： 10.1063/1.1347968 　

    ISSN： 0034-6748

  255. Applicability of platinum and molybdenum coatings for measuring thermal diffusivity of transparent glass specimens by the laser flash method at high temperatures Peer-reviewed

    Hiroyuki Shibata, Hiromichi Ohta, Atsushi Suzuki, Yoshio Waseda

    Materials Transactions, JIM　41　(12)　1616-1620　2000

    Publisher: Japan Inst of Metals

    DOI： 10.2320/matertrans1989.41.1616 　

    ISSN： 0916-1821

  256. Kinetics of peritectic reaction and transformation in Fe-C alloys Peer-reviewed

    H. Shibata, Y. Arai, M. Suzuki, T. Emi

    Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science　31　(5)　981-991　2000

    Publisher: Minerals, Metals &amp; Materials Soc (TMS)

    DOI： 10.1007/s11663-000-0074-3 　

    ISSN： 1073-5615

  257. Simulation of transverse crack formation on continuously cast peritectic medium carbon steel slabs Peer-reviewed

    柴田 浩幸

    Steel research　70　(10)　412-419　1999/04

    DOI： 10.1002/srin.199905660 　

  258. Computer Simulation for Estimating the Effective Thermal Conductivity of Composite Materials Peer-reviewed

    柴田 浩幸

    熱物性　13　(4)　240-245　1999/04

    Publisher: JAPAN SOCIETY OF THERMOPHYSICAL PROPERTIES

    DOI： 10.2963/jjtp.13.240 　

    ISSN： 0913-946X

    More details Close

    The effective thermal diffusivity of unidirectional fiber composites, of which effective thermal conductivity under the steady heat flow condition have been already investigated systematically, under the unsteady transverse and parallel directional heat flow condition were determined by a finite element method. The relation between the effective thermal conductivity and the apparent thermal conductivity of the composites measured by the usual laser flash technique was discussed and the condition that the former agreed with the latter was determined.

  259. Morphological instability of δ-ferrite/γ-austenite interphase boundary in low carbon steels Peer-reviewed

    H. Yin, T. Emi, H. Shibata

    Acta Materialia　47　(5)　1523-1535　1999/03/31

    Publisher: Elsevier Science Ltd

    DOI： 10.1016/S1359-6454(99)00022-1 　

    ISSN： 1359-6454

  260. In-situ observation of intragranular ferrite nucleation at oxide particles Peer-reviewed

    T Hanamura, H Shibata, Y Waseda, H Nakajima, S Torizuka, T Takanashi, K Nagai

    ISIJ INTERNATIONAL　39　(11)　1188-1193　1999

    DOI： 10.2355/isijinternational.39.1188 　

    ISSN： 0915-1559

  261. The capillary effect promoting collision and agglomeration of inclusion particles at the inert gas-steel interface - Discussion Peer-reviewed

    JC Earnshaw, T Emi

    PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES　356　(1739)　966-966　1998/04

    DOI： 10.1098/rsta.1998.0200 　

    ISSN： 1364-503X

  262. Determination of free energy of delta-ferrite/gamma-austenite interphase boundary of low carbon steels by in-situ observation Peer-reviewed

    HB Yin, T Emi, H Shibata

    ISIJ INTERNATIONAL　38　(8)　794-801　1998

    DOI： 10.2355/isijinternational.38.794 　

    ISSN： 0915-1559

  263. Heat transfer across mold flux film in mold during initial solidification in continuous casting of steel Peer-reviewed

    JW Cho, T Emi, H Shibata, M Suzuki

    ISIJ INTERNATIONAL　38　(8)　834-842　1998

    DOI： 10.2355/isijinternational.38.834 　

    ISSN： 0915-1559

  264. In-situ observation of engulfment and pushing of nonmetallic inclusions in steel melt by advancing melt/solid interface Peer-reviewed

    H Shibata, HB Yin, S Yoshinaga, T Emi, M Suzuki

    ISIJ INTERNATIONAL　38　(2)　149-156　1998

    DOI： 10.2355/isijinternational.38.149 　

    ISSN： 0915-1559

  265. Melting temperature, transformation and metastable phase diagram of rapidly solidified Ag-Cu alloys Peer-reviewed

    H. Fredriksson, Y. Arai, T. Emi, M. Haddad-Sabsevar, H. Shibata

    Materials Transactions, JIM　39　(5)　587-595　1998

    Publisher: Japan Institute of Metals (JIM)

    DOI： 10.2320/matertrans1989.39.587 　

    ISSN： 0916-1821

  266. Modeling the behavior of Al2O3 inclusions during the dendritic solidification of steel Peer-reviewed

    H Shibata, DR Poirier, T Emi

    ISIJ INTERNATIONAL　38　(4)　339-347　1998

    DOI： 10.2355/isijinternational.38.339 　

    ISSN： 0915-1559

  267. Radiative heat transfer through mold flux film during initial solidification in continuous casting of steel Peer-reviewed

    J Cho, H Shibata, T Emi, M Suzuki

    ISIJ INTERNATIONAL　38　(3)　268-275　1998

    DOI： 10.2355/isijinternational.38.268 　

    ISSN： 0915-1559

  268. Solubility of MnS in Fe-Ni alloys as determined by in-situ observation of precipitation of MnS with a confocal scanning laser microscope Peer-reviewed

    N Yuki, H Shibata, T Emi

    ISIJ INTERNATIONAL　38　(4)　317-323　1998

    DOI： 10.2355/isijinternational.38.317 　

    ISSN： 0915-1559

  269. Thermal resistance at the interface between mold flux film and mold for continuous casting of steels Peer-reviewed

    J Cho, H Shibata, T Emi, M Suzuki

    ISIJ INTERNATIONAL　38　(5)　440-446　1998

    DOI： 10.2355/isijinternational.38.440 　

    ISSN： 0915-1559

  270. Radiative component of heat transfer in mold flux film for continuous casting of steel analyzed by Monte Carlo method Peer-reviewed

    H Ohta, H Shibata, T Emi, Y Waseda

    JOURNAL OF THE JAPAN INSTITUTE OF METALS　61　(4)　350-357　1997/04

    DOI： 10.2320/jinstmet1952.61.4_350 　

    ISSN： 0021-4876

    eISSN： 1880-6880

  271. Characteristics of agglomeration of various inclusion particles on molten steel surface Peer-reviewed

    HB Yon, H Shibata, T Emi, M Suzuki

    ISIJ INTERNATIONAL　37　(10)　946-955　1997

    DOI： 10.2355/isijinternational.37.946 　

    ISSN： 0915-1559

  272. ''In-situ'' observation of collision, agglomeration and cluster formation of alumina inclusion particles on steel melts Peer-reviewed

    HB Yin, H Shibata, T Emi, M Suzuki

    ISIJ INTERNATIONAL　37　(10)　936-945　1997

    DOI： 10.2355/isijinternational.37.936 　

    ISSN： 0915-1559

  273. Recovery of hot ductility by improving thermal pattern of continuously cast low carbon and ultra low carbon steel slabs for hot direct rolling Peer-reviewed

    M Suzuki, CH Yu, H Shibata, T Emi

    ISIJ INTERNATIONAL　37　(9)　862-871　1997

    DOI： 10.2355/isijinternational.37.862 　

    ISSN： 0915-1559

  274. Thermal diffusivities of continuous casting mold fluxes for steel in the glassy and crystalline states Peer-reviewed

    H Shibata, T Emi, Y Waseda, K Kondo, H Ohta, K Nakajima

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　82　(6)　504-508　1996/06

    ISSN： 0021-1575

  275. Anomaly in Melting Behavior and Mechanical Properties of Carbon Steels Near Their Solidus Temperature Peer-reviewed

    柴田 浩幸

    Materials Transactions, JIM　37　(5)　1251-1257　1996/04

    Publisher: The Japan Institute of Metals

    DOI： 10.2320/matertrans1989.37.1251 　

    More details Close

    Incipient melting of grain boundaries or dendrite boundaries at temperatures below the melting point of bulk matrix makes carbon steels fail in a brittle manner, leading to the occurrence of surface and internal cracks in continuously cast strand during the casting or hot rolling. The incipient melting temperature for carbon steels was measured by a conforcal laser scanning microscope, and their brittle behavior was studied at elevated temperatures by hot tensile test machine. It was found that steels containing less than 0.2 mass% C fracture at about 30K below the calculated solidus temperatures, whereas steels containing more than 0.3 mass% C fracture at about 20K above the calculated solidus temperatures on heating. These fracture temperatures are found nearly equal to the zero strength temperature (ZST). Such anomalous fracture behavior is shown in good agreement with the results of &ldquo;in-situ&rdquo; observation of melting occurring at the grain boundaries in the low carbon steels and at solute enriched interdendritic region in the high carbon steels. The reason for the incipient melting at the grain boundaries in low carbon steels is confirmed to be due to the segregation of impurity elements such as P and S at the grain boundaries. An experimental equation for estimating the premelting temperatures and some measures for preventing the occurrence of the cracks near the solidus temperatures are derived from these observations.

  276. Origin of Heat Transfer Anomaly and Solidifying Shell Deformation of Peritectic Steels in Continuous Casting Peer-reviewed

    柴田 浩幸

    ISIJ International　36　S171-S174　1996/04

    Publisher: The Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.36.Suppl_S171 　

    ISSN： 0915-1559

    More details Close

    The effect of carbon content of steel melt on the heat transfer in a continuous casting mold was investigated in a laboratory scale mold by simultaneous measurements of the heat flux during solidification of the melt and shrinkage of the resulting shell during solidification and cooling. For peritectic medium carbon steels, the heat flux on the mold surface was subject to an anomalous decrease, since the surface roughness of the shell was substantial, providing an air gap at the shell/mold interface. For ultra low carbon steels, however, the heat flux was large in spite of the fact that surface roughness was also significant. For peritectic medium carbon steels, the deformation of the shell caused by the shrinkage due to δ/γ transformation during and just after solidification is responsible for the formation of the surface roughness, resulting in the heat transfer anomaly. On the contrary, the surface roughness for ultra low carbon steels is formed later on the shell after solidification during cooling, and hence it does not decrease the heat flux at the initial stage of solidification.

  277. Simulation of Crack Formation of Solidifying Steel Shell in Continuous Casting Mold Peer-reviewed

    柴田 浩幸

    ISIJ International　36　S159-S162　1996/04

    Publisher: The Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.36.Suppl_S159 　

    ISSN： 0915-1559

    More details Close

    Stress-strain data of continuously cast (CC) steel at high temperatures available in the past are based on uni-axial tensile tests in a uniform temperature field, the data being utilized for thermal stress analysis to simulate crack formation on a CC-slab surface. New equipment for hot tensile and bending tests has now been developed by the authors that allows determination of more realistic stress-strain behavior of the solidifying shell subjected to temperature gradients similar to those in a CC-mold. Key factors affecting crack formation have been studied with this equipment. Fine cracks were found to form at the hot side of the tensile test-piece during straining. These cracks are initiated at grain boundaries which are located on the previous interdendritic solute-segregated region. The critical strain for the crack formation is independent of the strain rate within the range of 5–50×10-4s-1, depending on the carbon content, measuring 2% for peritectic carbon steels, 1.5% for ultra low carbon steels and about 1% for low, middle and high carbon steels.

  278. Thermal Resistance between Solidifying Steel Shell and Continuous Casting Mold with Interrening Flux Film Peer-reviewed

    柴田 浩幸

    ISIJ International　36　S179-S182　1996/04

    Publisher: The Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.36.Suppl_S179 　

    ISSN： 0915-1559

    More details Close

    Conductive thermal resistance from solidifying steel shell through mold flux to continuous casting mold was investigated in bench tests. Thermal diffusivities of six mold fluxes used in continuous casting of steels were determined in glassy, crystalline and molten states with a laser flash method. Interfacial thermal resistance between the solidifying mold fluxes and copper mold was also investigated by pouring the molten fluxes onto copper mold and measuring transient heat transfer to the mold. The surface morphology of solidified fluxes in contact with the mold was observed with a stylus type profile meter and related to the interfacial thermal resistance. Thermal diffusivity of glassy state (ca. 4.5×10-7 m2 s-1) and molten state (ca. 5×10-7 m2 s-1) was insensitive to chemical composition and temperature, while that of crystalline state was higher (5.8–7.8×10-7 m2 s-1 at room temperature) and decreased with increasing temperature, reaching similar value to that for glassy and molten state at high temperatures. The surface morphology consisted of large cells on which small cells were superimposed. Observed interfacial thermal resistance increased with increasing height of the large cells, contributing more than 50% of the total conductive heat transfer resistance and being a significant factor to control the heat transfer between the solidifying steel shell and the mold.

  279. ''In-situ'' real time observation of planar to cellular and cellular to dendritic transition of crystals growing in Fe-C alloy melts Peer-reviewed

    H Chikama, H Shibata, T Emi, M Suzuki

    MATERIALS TRANSACTIONS JIM　37　(4)　620-626　1996/04

    DOI： 10.2320/matertrans1989.37.620 　

    ISSN： 0916-1821

  280. Thermal diffusivities of continuous casting powders for steel at high temperature Peer-reviewed

    Y. Waseda, M. Masuda, K. Watanabe, H. Shibata, H. Ohta, K. Nakajima

    High Temperature Materials and Processes　13　(4)　267-276　1994

    DOI： 10.1515/HTMP.1994.13.4.267 　

    ISSN： 2191-0324 0334-6455

  281. NEW LASER-FLASH METHOD FOR MEASURING THERMAL-DIFFUSIVITY OF ISOTROPIC AND ANISOTROPIC THIN-FILMS Peer-reviewed

    H SHIBATA, H OHTA, Y WASEDA

    MATERIALS TRANSACTIONS JIM　32　(9)　837-844　1991/09

    ISSN： 0916-1821

  282. Measurement of thermal diffusivity of pyroceram 9606 by the laser flash method

    Hiromichi Ohta, Tatuyuki Tsukida, Yo Tomota, Hiroyuki Shibata, Gaku Ogura, Yoshio Waseda

    Journal of the Ceramic Society of Japan. International ed.　99　(6)　471-476　1991/06

    ISSN： 0912-9200

  283. The measurements of thermal diffusivity in the direction parallel or perpendicular to the sample surface of films by the laser flash method.

    Shibata Hiroyuki, Waseda Yoshio, Ohta Hiromichi

    Jpn. J. Thermophys. Prop.　4　(1)　36-41　1990

    Publisher: JAPAN SOCIETY OF THERMOPHYSICAL PROPERTIES

    DOI： 10.2963/jjtp.4.36 　

    ISSN： 0913-946X

    More details Close

    A laser flash method for measuring thermal diffusivity in the direction parallel or perpendicular to the sample surface of films has been developed. On measurement of parallel direction of a sample, a pulsed laser beam which has narrow line-shaped cross section is flashed onto the front surface of the sample. The temperature response at the back surface at a certain distance away from the line-shaped illuminated area of a laser beam is measured by the infrareddetector and the thermal diffusivity value can be determined by comparing measured temperatureresponse curve with theoretical one.<br>On the other hand, the measurement of thermal diffusivity in the direction perpendicular to the sample surface of a film, a pulsed laser beam whose diameter is about 10mm, is flashed onto the front surface of the sample. The temperature response at the back surface is measured by the infrared detector. The thermal diffusivity value can be determined by comparing with the theoretical solution including a pulse duration. The usefulness of the present method has been demonstrated by measuring successfully thermal diffusivities of metallic foil samples of platinum (25μm), copper (18μm), SUS304 stainless steel (50μm) and nickel (130μm).

  284. NEW ATTEMPT FOR MEASURING THERMAL-DIFFUSIVITY OF THIN-FILMS BY MEANS OF A LASER FLASH METHOD Peer-reviewed

    H OHTA, H SHIBATA, Y WASEDA

    REVIEW OF SCIENTIFIC INSTRUMENTS　60　(3)　317-321　1989/03

    ISSN： 0034-6748

  285. Random packed optical fiber bundle for homogenizing the energy distribution in a laser beam on the specimen surface and its application to the thermal diffusivity measurements.

    Ohta Hiromichi, Shibata Hiroyuki, Ogura Gaku, Waseda Y., Shibuya Yukio, Fuse Masaki

    Jpn. J. Thermophys. Prop.　3　(2)　102-105　1989

    Publisher: JAPAN SOCIETY OF THERMOPHYSICAL PROPERTIES

    DOI： 10.2963/jjtp.3.102 　

    ISSN： 0913-946X

    More details Close

    Ruby lasers usually employed in the laser flash method for measuring thermal diffusivity of various inorganic substances are known to have the inhomogeneous energy distribution and their particular spatial intensity structure significantly effects the quantitative accuracy of the resultant thermal diffusivity data in some cases. Random packed fiber bundle made of plastic optical fiber with plastic optical guiding rod has been developed for homogenizing the energy distribution in a laser beam on the specimen surface. The usefulness of this new device has been well approved by measuring the energy distribution and the thermal diffusivity of nickel disc.

  286. Effect of Radiative Heat Transfer on Thermal Conductivity Measurements For Inorganic Semitransparent Materials at High Temperature Peer-reviewed

    In-Kook Suh, H. Shibata, H. Ohta

    High Temperature Materials and Processes　8　(2)　135-147　1989

    DOI： 10.1515/HTMP.1989.8.2.135 　

    ISSN： 2191-0324 0334-6455

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  10. カルシウムフェライトの凝固組織に及ぼす冷却速度およびアルミニウム添加の影響

    鳥毛 翔太, 助永 壮平, 田代 公則, 柴田 浩幸

    37　(2)　503-503　2024/09

  11. ガラス物性理解のためのNMR測定 Invited

    助永宗平, 柴田浩幸

    固体NMR・材料フォーラム報告　5-8　2024/05

  12. Compositional dependence of phonon mean free path in oxide glasses

    Sohei Sukenaga, Bunta Ozato, Kenta Ebe, Akira Yoko, Takaaki Tomai, Masahiro Shimizu, Rie Endo, Tsuyoshi Nishi, Sakiko Kawanishi, Hiroyuki Shibata

    CAMP-ISIJ　37　(1)　93-93　2024/03/01

  13. Dominant factor for thermal conductivity in silicate melts: a molecular dynamics study

    CAMP-ISIJ　37　(1)　94-94　2024/03/01

  14. Measurement Conditions for Thermal Conductivity of Oxide Melts Using Transient Hot-Wire Method - A Study Using Finite Element Method -

    CAMP-ISIJ　37　(1)　95-95　2024/03/01

  15. THERMAL CONDUCTIVITY OF CaO-CaF2-SiO2 MELTS

    CAMP-ISIJ　37　(1)　96-96　2024/03/01

  16. Influence of cooling rate on the structure of solidified calcium ferrite

    Shota Torige, Sohei Sukenaga, Masanori Tashiro, Hiroyuki Shibata

    CAMP-ISIJ　37　(1)　PS-14-3　2024/03/01

  17. Variation of incorporation limit of molybdenum in sodium silicate glasses with the addition of rare-earth oxides

    Qiao Huang, Sohei Sukenaga, Masanori Tashiro, Hiroyuki Shibata

    CAMP-ISIJ　37　(1)　297-297　2024/03/01

  18. CaO-SiO2系スラグの粘度に及ぼす酸化チタン濃度および 酸化状態の影響

    助永壮平, 内田稜, 柴田浩幸, 内藤憲一郎

    製鋼科学技術コンソーシアム 研究会資料　2024/3/4　1-9　2024/01/01

  19. Na2O-SiO2-B2O3系ガラスマトリックスに対するTiO2の含有限界濃度

    高草木寧緒, 助永壮平, 篠田弘造, 柴田浩幸

    2023年秋期講演大会概要集　P87　2023/09/01

  20. アルカリケイ酸塩ガラスにおける熱伝導度の温度および組成依存性

    小里文太, 助永壮平, 柴田浩幸

    材料とプロセス　36　(2)　PS6　2023/09/01

  21. Crystallization kinetics of the CaO-SiO2-Al2O3-MgO system inclusions

    Yong Wang, Sohei Sukenaga, Masanori Tashiro, Hua Zhang, Hongwei Ni, Hiroyuki Shibata

    CAMP-ISIJ　36　(2)　499-499　2023/09/01

  22. Change in local structure near molybdenum cations with variation of MoO3 content in a sodium borate glass

    Sohei Sukenaga, Tetsuo Kishi, Hiroki Unozawa, Neo Takakusagi, Mariko Ando, Yuki Chiba, Masanori Tashiro, Sakiko Kawanishi, Hiroyuki Shibata

    Abstract of GOMD 2023　GOMD-S1-051-2023　2023/06/01

  23. マルチアニオン融体の非ニュートン性を発現する化学結合種の解明

    助永壮平, 橋本一輝, 田代公則, 柴田浩幸

    JFE21世紀財団2022年度大学研究助成 技術研究報告書　23-30　2023/06/01

  24. van der Pauw 法によるセル定数を用いない CaO-Al2O3-CaF2 系フラックスの電気伝導率測定

    齊藤敬高, 助永壮平, 柴田浩幸, 中島邦彦

    製鋼科学技術コンソーシアム研究会資料 反応プロセス研究会　2023/1/5　1-21　2023/06/01

  25. Preface: 13th Asian Thermophysical Properties Conference (ATPC2022)

    Hidekazu Kobatake, Sohei Sukenaga, Hiroyuki Fukuyama

    High Temperatures-High Pressures　52　(3月4日)　191-193　2023/06/01

    Publisher: Old City Publishing, Inc

    DOI： 10.32908/hthp.v52.1487 　

    eISSN： 1472-3441

  26. 流体の物性から見る: 万年筆とインクと紙 Peer-reviewed

    助永壮平, 夏井俊悟, 植田滋

    ふぇらむ(日本鉄鋼協会会報)　28　(4)　210-216　2023/04/01

  27. Physical properties of molten oxide related to iron- and steel-making Invited

    Sohei Sukenaga

    CAMP-ISIJ　36　(1)　80　2023/03/01

  28. Effect of MgO content on the viscosity of copper slag

    36　(1)　322　2023/03

  29. ナトリウムボロシリケート系ガラス中への酸化モリブデンの含有限界濃度

    助永壮平, 岸哲生, 宇野澤大槻, 高草木寧緒, 安東真理子, 田代公則, 川西咲子, 柴田浩幸

    材料とプロセス　36　(1)　320　2023/03

  30. 窒素またはフッ素を含有するカルシウムケイ酸塩融体における粘度の剪断速度依存性

    橋本一輝, 助永壮平, 柴田浩幸

    第63回ガラスおよびフォトニクス材料討論会　35-36　2022/12

  31. 放射性廃棄物の減容化に向けたガラス固化技術基盤研究 ガラスマトリックスの開発 2021 年度成果概要

    大和久 耕平, 塚田 毅志, 兼平 憲男, 菅原 透, 助永 壮平, 柴田 浩幸, 矢野 哲司, 齊藤 敬高, 中島 邦彦

    第4回放射性廃棄物固化体討論会 要旨集　NWG2022-02　2022/10

  32. Na2O–B2O3–SiO2 系ガラスへの MoO3 の含有限界濃度に及ぼす B2O3/SiO2 比の影響

    助永壮平, 宇野澤大槻, 田代公則, 川西咲子, 柴田浩幸

    第4回放射性廃棄物固化体討論会 要旨集　NWG2022-08　2022/10

  33. Viscosity of silicate melts containing transition metal cations

    Sohei Sukenaga, Issei Takahashi, Kozo Shinoda, Daniel Neuville, Sakiko Kawanishi, Hiroyuki Shibata

    Abstract of the 13th Asian Thermophysical Properties Conference, ATPC2022　OS12-3-04　2022/09

  34. 蛍光イメージング法によるCaSiO₃及び CaMgSi₂O₆の溶出機構の検討

    藤田 真由, 川西 咲子, 川野 潤, 助永 壮平, 柴田 浩幸

    日本鉄鋼協会 第56回学生ポスターセッション概要集　8-8　2022/09

  35. カルシウムケイ酸塩融体の粘度に及ぼす窒素またはフッ素添加の影響

    橋本 一輝, 助永 壮平, 柴田浩幸

    日本鉄鋼協会 第56回学生ポスターセッション概要集　7-7　2022/09

  36. アルカリケイ酸塩融体の粘度に及ぼすAlO1.5/SiO2比の影響

    助永壮平, 生駒諒太, 田代公則, 川西咲子, 柴田浩幸

    材料とプロセス　35　(2)　468-468　2022/09

  37. 銅製錬スラグの粘度測定

    助永 壮平, 高橋 一誠, 田代 公則, 川西 咲子, 柴田 浩幸

    資源・素材講演集　9　(2)　1201-08-04　2022/08

  38. Na–Si–O–N–F系融体の粘度：酸素，窒素およびフッ素の混合効果 Invited Peer-reviewed

    助永壮平, 小川将幸, 簗場豊, 安東真理子, 柴田浩幸

    鉄と鋼　108　(3)　175-180　2022/03

  39. ケイ酸塩融体の粘度に及ぼすフッ素および窒素添加の影響

    助永壮平, 小川将幸, 簗場豊, 安東真理子, 柴田浩幸

    材料とプロセス　35　113-113　2022/03

  40. 溶融 Si-Cr 合金中窒素の熱力学量の評価

    川西咲子, 八野田将吾, 助永壮平, 柴田浩幸

    材料とプロセス　35　320-320　2022/03

  41. 銅溶錬マットへのマグネタイトの溶解挙動に及ぼすガス発生の影響

    申勝煥, 川西咲子, 助永壮平, 高橋純一, 柴田浩幸

    材料とプロセス　35　315-315　2022/03

  42. アルカリ土類鉄ケイ酸塩融体および過冷却液体の粘度

    助永壮平, 高橋一誠, 篠田弘造, 川西咲子, 柴田浩幸

    材料とプロセス　35　317-317　2022/03

  43. Na2O-SiO2-B2O3 三元系における酸化モリブデンの見かけの溶解度評価

    助永壮平, 宇野澤大槻, 田代公則, 川西咲子, 柴田浩幸

    国際ガラス年2022(IYoG2022)記念行事「第3回放射性廃棄物固化体討論会」予稿集　NWG2022-19　2022/01

  44. Calcium Elution Mechanism from Silicate-Based Minerals into Water Invited

    SHIBATA Hiroyuki, FANG Ruang, KAWANISHI Sakiko, SUKENAGA Sohei

    Abstract of 2021 China Symposium on Sustainable Iron- and Steelmaking Technology　1-1　2021/12

  45. New role of magnesium in sustainable society Invited

    SHIBATA Hiroyuki, SAKAMOTO Michiru, KUMAGAI Shiori

    KINZOKU MATERIAL SCIENCE & TECHNOLOGY　91　(12)　1021-1027　2021/12

  46. Thermophysical Properties of Silicate Melts and Glasses Invited

    SHIBATA Hiroyuki, SUKENAGA Sohei, NISHI Tsuyoshi, OHTA Hiromichi

    Extended abstract of 11th International Conference on Molten Slags, Fluxes and Salts (Molten2021)　1-2　2021/02

  47. Solubility measurement in melt by 3D shape analysis of high-temperature solid/liquid interface

    川西咲子, 吉川健, CHAUSSENDE Didier, 柴田浩幸

    材料とプロセス(CD-ROM)　34　(1)　2021

    ISSN： 1882-8922

  48. Thermal conductivity of alkali silicate melts and glasses

    助永壮平, 遠藤貴彦, 山田大貴, 江部健太, 西剛史, 脇原徹, 尾原幸治, 川西咲子, 太田弘道, 柴田浩幸

    材料とプロセス(CD-ROM)　34　(1)　2021

    ISSN： 1882-8922

  49. Quantitative evaluation of solute concentration around solidification interface by interferometry

    川西咲子, 塩沢優大, 柴田浩幸

    材料とプロセス(CD-ROM)　34　(1)　2021

    ISSN： 1882-8922

  50. Characterization of thin oxides layers formed on the surfaces of Fe based alloys

    鈴木茂, 粕谷素洋, 柴田浩幸, 浦川潔, 佐藤武信, 江幡貴司

    材料とプロセス(CD-ROM)　34　(1)　2021

    ISSN： 1882-8922

  51. Apparent solubility of molybdenum oxide in multicomponent glass matrix

    助永壮平, 足立麻季, 兼平憲男, 田代公則, 柴田浩幸

    日本原子力学会春の年会予稿集(CD-ROM)　2021　2021

  52. Measurement of time-resolved synchrotron X-ray total scattering pattern for a calcium ferrite melt

    助永壮平, 柴田浩幸, 尾原幸治

    材料とプロセス(CD-ROM)　34　(2)　2021

    ISSN： 1882-8922

  53. EVALUATION OF THERMAL CONDUCTIVITY OF ALUMINOSILICATE MALTS

    黒江怜史, 西剛史, 太田弘道, 助永壮平, 柴田浩幸

    Thermophysical Properties (CD-ROM)　42nd　2021

    ISSN： 0911-1743

  54. EVALUATION OF THERMAL CONDUCTIVITY OF MOLTEN CaO-CaF2-SiO2 SLAG

    南部大輝, 西剛史, 太田弘道, 助永壮平, 柴田浩幸

    Thermophysical Properties (CD-ROM)　42nd　2021

    ISSN： 0911-1743

  55. 高温冶金プロセスにおけるその場観察 Invited

    柴田浩幸

    素材プロセッシング第69委員会第１分科会（非鉄製錬関連技術）〔第61回〕研究会資料　29-31　2020/12/08

  56. Influence of composition on local structure in the neighborhood of Fe3+ ions for silicate glasses

    助永壮平, 古賀拓郎, 篠田弘造, 柴田浩幸

    材料とプロセス(CD-ROM)　33　(1)　2020

    ISSN： 1882-8922

  57. Characterization of oxides layer formed on the surfaces of Fe-Co-V alloys added with a small amount of Al

    鈴木茂, 粕谷素洋, 柴田浩幸, 今宿晋, 我妻和明, 浦川潔

    材料とプロセス(CD-ROM)　33　(1)　2020

    ISSN： 1882-8922

  58. Glass formation of high-iron silicate slags

    助永壮平, MAI Paolo, 川西咲子, 柴田浩幸

    資源・素材(Web)　2020　2020

  59. Analysis of magnetite/matte interface reaction by in-situ observation

    川西咲子, SHIN Seung-hwan, 助永壮平, 高橋純一, 柴田浩幸

    資源・素材(Web)　2020　2020

  60. Visualization of elution behavior of CaSiO3 into aqueous solution by fluorescence imaging technique

    中山日菜子, 川西咲子, 川野潤, 柴田浩幸

    材料とプロセス(CD-ROM)　33　(2)　2020

    ISSN： 1882-8922

  61. Sputtering deposition of n-type SnS thin films

    鈴木一誓, 川西咲子, BAUERS Sage, ZAKUTAYEV Andriy, 柴田浩幸, KIM Minesok, 柳博, 小俣孝久

    資源・素材(Web)　2020　2020

  62. Effect of Halogen on Solution Growth of SnS Single Crystals

    川西咲子, 鈴木一誓, 小俣孝久, 柴田浩幸

    結晶成長国内会議予稿集(CD-ROM)　49th　2020

    ISSN： 0385-6275

  63. 蛍光イメージングよるCaSiO3の水への溶解挙動の解明

    中山日菜子, 川西咲子, 川野潤, 助永壮平, 柴田浩幸

    東北大学多元物質科学研究所研究発表会講演予稿集　20th　2020

  64. Fabrication of n-type SnS thin films by sputtering deposition

    鈴木一誓, 川西咲子, BAUERS Sage, ZAKUTAYEV Andriy, 柴田浩幸, KIM Minesok, 柳博, 小俣孝久

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)　81st　2020

  65. 過共晶Fe-C-Cr合金におけるM7C3炭化物の形成過程のその場観察

    大石義彦, 伊藤慎, 河合秀樹, 埜上洋, 柴田浩幸

    東北大学多元物質科学研究所研究発表会講演予稿集　20th　2020

  66. Fabrication of pn homojunction of SnS and its photovoltaic properties

    川西咲子, 鈴木一誓, BAUERS Sage, ZAKUTAYEV Andriy, 柴田浩幸, 柳博, 小俣孝久

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)　81st　2020

  67. Reaction behavior of oxide inclusions in steel against a cemented carbide

    楠下颯, 助永壮平, 柴田浩幸

    日本金属学会東北支部研究発表大会予稿集　19th (CD-ROM)　2020

  68. SiC溶液成長時の成長界面に及ぼすCr-Si合金溶媒の熱伝導率の影響

    阿部舞, 川西咲子, 柴田浩幸

    材料とプロセス(CD-ROM)　32　(1)　2019

    ISSN： 1882-8922

  69. CaO-R2O-Al2O3-SiO2系(R=Li,Na or K)融体の粘度に及ぼすR2O/CaO比の影響

    助永壮平, 馬場周平, 馬場周平, 金橋康二, 篠崎健二, 柴田浩幸

    材料とプロセス(CD-ROM)　32　(1)　2019

    ISSN： 1882-8922

  70. 高硝酸ナトリウム含有廃液用低レベル放射性ガラス中のTi,Zn,Zrの局所構造解析とその添加効果

    田治見祐里, 椎名慶, 味村武史, 田尻康智, 助永壮平, 柴田浩幸, 松浦治明

    日本原子力学会春の年会予稿集(CD-ROM)　2019　2019

  71. SiC溶液成長時の溶液内熱流動に及ぼす各種物性値の影響

    川西咲子, 大黒寛典, 大黒寛典, 石川毅彦, 阿部舞, 柴田浩幸, 吉川健

    日本金属学会講演概要(CD-ROM)　164th　2019

    ISSN： 2433-3093

  72. Bi-Te材料と金属基板との界面反応および接合

    助永壮平, 田代公則, 篠田弘造, 梶谷剛, 池本浩一, 鈴木茂, 柴田浩幸

    材料とプロセス(CD-ROM)　32　(2)　2019

    ISSN： 1882-8922

  73. 鉄ケイ酸塩スラグの還元過程における表面張力変化

    助永壮平, 川西咲子, 打越雅仁, 石原真吾, 夏井俊悟, 大野光一郎, 齊藤敬高, 中島邦彦, 柴田浩幸

    資源・素材(Web)　2019　2019

  74. In-situ observation of competition of domains during high-temperature solution growth of SiC

    川西咲子, 吉川健, 柴田浩幸

    結晶成長国内会議予稿集(CD-ROM)　48th　2019

    ISSN： 0385-6275

  75. THERMAL CONDUCTIVITY OF IRON-BEARING ALKALINE-EARTH SILICATE SLAGS

    真山知大, 西剛史, 太田弘道, 眞子巧巳, 大和佳史, 上田直希, 助永壮平, 柴田浩幸

    Thermophysical Properties　40th　2019

    ISSN： 0911-1743

  76. THERMAL CONDUCTIVITY OF B2O3-RxO-SiO2 (R=Na,K,Mg,Ca) MELTS

    眞子巧巳, 西剛史, 真山知大, 大和佳史, 太田弘道, 上田直希, 助永壮平, 柴田浩幸

    Thermophysical Properties　40th　2019

    ISSN： 0911-1743

  77. SPECTRAL EMISSIVITY MEASUMENTS AND HEAT CAPACITY CALCULATION OF MOLTEN Cr-Si WITH AN ELESTROSTATIC LEVITATOR

    仲田結衣, 渡邊勇基, 小山千尋, 石川毅彦, 川西咲子, 柴田浩幸, 吉川健

    Thermophysical Properties　40th　2019

    ISSN： 0911-1743

  78. BaF2-ZnO-B2O3ガラスの構造とナノ結晶化メカニズム

    篠崎健二, 赤井智子, 石井良樹, 助永壮平, 柴田浩幸, 尾原幸治

    日本セラミックス協会年会講演予稿集(CD-ROM)　2019　2019

  79. Relationship Between Physical Properties of Aluminosilicate Melts and Concentration of Non-bridging Oxygen: Viscosity, Molar Volume and Surface Tension

    Sukenaga Sohei, Shibata Hiroyuki

    Materia Japan　58　(11)　627-629　2019

    Publisher: The Japan Institute of Metals and Materials

    ISSN： 1340-2625

  80. BaF2‐Al2O3‐B2O3ガラスのMDおよびRMCシミュレーションとCe添加による発光特性

    篠崎健二, 岡田豪, 助永壮平, 柴田浩幸, 尾原幸治, 正井博和, 河口範明, 柳田健之

    日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM)　31st　ROMBUNNO.2PJ06　2018/08/27

  81. 高温冶金プロセスにおける非金属介在物の挙動

    柴田浩幸

    材料とプロセス(CD-ROM)　31　(2)　2018

    ISSN： 1882-8922

  82. アルカリケイ酸塩系融体の粘度に及ぼすAlO1.5/SiO2比の影響

    生駒諒太, 遠藤貴彦, 助永壮平, 柴田浩幸

    材料とプロセス(CD-ROM)　31　(2)　2018

    ISSN： 1882-8922

  83. アルカリケイ酸塩融体の粘度に及ぼすAlO1.5/SiO2比の影響

    生駒諒太, 助永壮平, 柴田浩幸

    東北大学多元物質科学研究所研究発表会講演予稿集　18th　2018

  84. 3C-SiC二次元核生成に及ぼす6H-SiC種結晶の極性面とステップ構造の影響

    渡邊遼, 川西咲子, 柴田浩幸

    日本金属学会講演概要(CD-ROM)　162nd　2018

    ISSN： 2433-3093

  85. 溶媒移動法における物質移動現象を利用した1600-2000°Cでの諸物性値の評価

    川西咲子, 吉川健, 柴田浩幸

    日本金属学会講演概要(CD-ROM)　163rd　2018

    ISSN： 2433-3093

  86. SiO2-AlO1.5-R2O(R=Li,Na)融体状態およびガラス状態の熱伝導率測定

    眞子巧巳, 田中健登, 大沼克也, 太田弘道, 西剛史, 助永壮平, 柴田浩幸, 柿沼敏明

    日本金属学会講演概要(CD-ROM)　162nd　2018

    ISSN： 2433-3093

  87. SiC溶液成長時の熱流動に及ぼすFe-Si合金溶媒の熱伝導率の影響

    阿部舞, 川西咲子, 柴田浩幸

    東北大学多元物質科学研究所研究発表会講演予稿集　18th　2018

  88. Viscosity of alkaline aluminosilicate (R2O-SiO2-AlO1.5, R=Li, Na) melts

    生駒諒太, 助永壮平, 柴田浩幸

    Thermophysical Properties　39th　2018

    ISSN： 0911-1743

  89. MEASUREMENT OF THERMAL CONDUCTIVITY OF MOLTEN Fe-Si ALLOYS

    阿部舞, 川西咲子, 柴田浩幸

    Thermophysical Properties　39th　2018

    ISSN： 0911-1743

  90. Dependence of addition of TiO2, ZnO, and ZrO2 on thermal conductivity of Al2O3-B2O3-CaO-Na2O-SiO2 melts

    大沼克也, 眞子巧巳, 大和佳史, 太田弘道, 西剛史, 柴田浩幸, 助永壮平

    Thermophysical Properties　39th　2018

    ISSN： 0911-1743

  91. 白金基板上における33Li2O-67SiO2(mol%)過冷却液体の結晶化挙動の制御

    田代公則, 助永壮平, 柴田浩幸

    日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM)　31st　2018

  92. CaO-R2O-Al2O3-SiO2(R=Na,K)系融体の粘度測定

    馬場周平, 助永壮平, 金橋康二, 柴田浩幸

    日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM)　31st　2018

  93. ケイ酸塩ガラス中でのアルミニウムイオンの化学状態

    助永壮平, Kyung-Ho Kim, 遠藤貴彦, 柴田浩幸, 吉田慎一郎, 安東真理子, 井上耕治, 永井康介, 脇原徹, 山田大貴, 尾原幸治, 金橋康二

    日本学術振興会製鋼第19委員会 提出資料　1-17　2018/01

  94. Cr-Si系溶媒の過飽和度が4H-SiCの溶液成長挙動に及ぼす影響

    永松洋一郎, 川西咲子, 柴田浩幸, 吉川健

    日本金属学会講演概要(CD-ROM)　161st　2017

    ISSN： 2433-3093

  95. 6H-SiCの貫通らせん転位を利用した3C-SiC核生成制御

    渡邊遼, 川西咲子, 柴田浩幸

    日本金属学会講演概要(CD-ROM)　161st　2017

    ISSN： 2433-3093

  96. 二元系硼珪酸塩融体の熱伝導率の組成依存性の検討

    大沼克也, 太田弘道, 西剛史, 田中健登, 柴田浩幸, 助永壮平, 柿原敏明, 川島英典, 内山翠

    日本金属学会講演概要(CD-ROM)　160th　2017

    ISSN： 2433-3093

  97. ゼオライト前駆体及びアルミノ珪酸塩ガラスの構造比較

    山田大貴, 山田大貴, 助永壮平, 尾原幸治, 柴田浩幸, 大久保達也, 脇原徹

    日本放射光学会年会・放射光科学合同シンポジウム(Web)　30th　2017

  98. Preface to the Special Issue on "Challenges and Progress of Science and Methodology to Thermophysical Properties of Molten Alloys, Slags and Fluxes at High Temperatures"

    Hiroyuki Fukuyama, Hiroyuki Shibata

    ISIJ INTERNATIONAL　57　(8)　1295-1295　2017

    DOI： 10.2355/isijinternational.57.1295 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  99. 高温冶金現象に関わるその場観察と熱物性測定

    柴田浩幸

    日本金属学会講演概要(CD-ROM)　159th　2016

    ISSN： 2433-3093

  100. 希土類-鉄系磁石の高温溶融プロセスにおける希土類元素の分離挙動

    助永壮平, 田代公則, 柴田浩幸

    日本金属学会講演概要(CD-ROM)　155th　2014

    ISSN： 2433-3093

  101. ガラスおよび結晶状態におけるLiGe2(PO4)3系化合物の構造解析

    小鹿裕希, 藤枝俊, 篠田弘造, 鈴木茂, 柴田浩幸, 早稲田嘉夫, 有馬寛, 川又透, 杉山和正

    日本金属学会講演概要(CD-ROM)　153rd　2013

    ISSN： 2433-3093

  102. ケイ酸塩融体の熱伝導率の擬クリストバライトモデルによる解析

    太田弘道, 猪瀬司, 長谷川裕樹, 古渡貴也, 白木康裕, 柴田浩幸

    材料とプロセス(CD-ROM)　26　(1)　2013

    ISSN： 1882-8922

  103. 製鋼スラグによる被災農地の再生

    北村信也, 伊藤豊彰, 丸岡伸洋, 柴田浩幸

    Materials Science & Technology　82　(11)　73-77　2012/11

    Publisher: アグネ技術センター

  104. 製鋼スラグによる被災農地の再生

    北村信也, 伊藤豊彰, 丸岡伸洋, 柴田浩幸

    金属　82　(11)　1011-1015　2012/11

  105. SCANMET IV ; 4th International Conference on Process Development in Iron and Steelmaking 報告

    柴田 浩幸, 植田 滋

    まてりあ : 日本金属学会会報　51　(10)　480-480　2012/10/01

    Publisher: 公益社団法人 日本金属学会

    DOI： 10.2320/materia.51.480 　

    ISSN： 1340-2625

  106. Thermophysical properties of high-temperature melts and materials

    正木匡彦, 須佐匡裕, 福山博之, 柴田浩幸

    熱物性　26　(1)　35-36　2012/01

  107. 製鋼プロセスの新展開

    北村信也, 柴田浩幸, 丸岡伸洋

    マテリアルインテグレーション　24　(4,5)　77-81　2011/05

  108. Thermophysical Properties of High-Temperature Melts and Materials Processing

    FUKUYAMA Hiroyuki, SHIBATA Hiroyuki

    25　(1)　33-33　2011/02/28

    ISSN： 0913-946X

  109. THE EFFECTS OF OXIDE AND FLUORIDE COMPOSITIONS ON THERMAL CONDUCTIVITY OF SILICATE MELTS

    HASEGAWA Hiroki, KOWATARI Takaya, OHTA Hiromichi, SHIBATA Hiroyuki

    31　173-175　2010/11/17

    ISSN： 0911-1743

  110. Mechanism of heat transfer through mold flux in continuous casting mold

    Bulletin of the Advanced Materials Processing Building, IMRAM, Tohoku University　64　(1)　58-64　2008/12

    Publisher: 東北大学多元物質科学研究所素材工学研究棟

    ISSN： 1348-4052

  111. On the glass forming ability of liquid alloys

    Yoshio Waseda, Ho-Sou Chen, Kallarackel Thomas Jacob, Hiroyuki Shibata

    SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS　9　(2)　123003-023016　2008/06

    DOI： 10.1088/1468-6996/9/2/023003 　

    ISSN： 1468-6996

    eISSN： 1878-5514

  112. クロム含有廃棄物のXANESおよびXPSによる化学状態分析

    畑田寛隆, 丸岡伸洋, 柴田浩幸, 北村信也, 篠田弘造, 鈴木茂

    資源・素材学会春季大会講演集　(2)　2008

    ISSN： 1343-9898

  113. 廃棄物有効利用への六価クロム状態分析の試み

    畑田 寛隆, 篠田 弘造, 柴田 浩幸, 北村 信也, 鈴木 茂, 早稲田 嘉夫

    春季大会講演集. I, 資源編　19　(2)　15-16　2007/03/29

    ISSN： 1343-9898

  114. Precipitation of Cu sulfide and MnS at High Temperature in Fe-0.5%Cu-0.5%Sn Super Ultra Low Carbon Steels

    YAMAMOTO Ken-ichi, SHIBATA Hiroyuki, MIZOGUCHI Shozo

    18　(1)　115-115　2005/03/01

    ISSN： 0914-6628

  115. Thermal Conductivity Measurements of Some Al_2O_3-CaO-SiO_2 Molten Silicates

    OHTA Hiromichi, SHIBATA Hiroyuki, KASAMOTO Tsuyoshi

    18　(1)　136-136　2005/03/01

    ISSN： 0914-6628

  116. 水熱合成法によるZnOバルク単結晶の熱伝導及び格子定数評価

    鏡谷勇二, 吉川彰, 川端紳一郎, 福田承生, 新倉郁生, 町田雄一, 柴田浩幸, 太田弘道, 稲葉克彦

    応用物理学関係連合講演会講演予稿集　52nd　(1)　2005

  117. Development for a New Technoque for Measuring Thermal Properties by a Novel Spectroscopic Laser Flash Method

    Hiroyuki SHIBATA, Hiroko NAKAYAMA, Hiromichi OHTA, Yoshio WASEDA

    Advanced Materials Processing Building,IMRAM,Tohoku University(SOZAIKEN IHO)　60　(1,2)　29-35　2004/12

  118. Measurement of Thermal Conductivity for Molten Silicates at High Temperatures by Means of A Novel Laser Flash Technique

    SHIBATA Hiroyuki

    17　(4)　561-561　2004/09/01

    ISSN： 0914-6628

  119. Precipitation of Cu, Sn and MnS at High Temperature in Fe-10%Cu-0.5%Sn Alloys

    YAMAMOTO Ken-ichi

    17　(4)　908-908　2004/09/01

    ISSN： 0914-6628

  120. Wettability between Molten Copper and MnS

    SHIBATA Hiroyuki

    17　(4)　911-911　2004/09/01

    ISSN： 0914-6628

  121. Precipitation of CuS and MnS at High Temperature in Fe-Cu-Sn Super Ultra Low Carbon Steels

    YAMAMOTO Ken-ichi

    17　(1)　72-72　2004/03/01

    ISSN： 0914-6628

  122. 液相還元法による金属Ni触媒の合成とCO水素化反応への応用

    牧原昌平, 高橋英志, 柴田浩幸, 山本勝俊, 佐藤修彰, 村松淳司, 松原英一郎, 早稲田嘉夫

    触媒討論会討論会A予稿集　91st　36　2003/03/20

    ISSN： 1343-9936

  123. Thermal Diffusivity Measurements of Oxide and Metallic Melts at High Temperature by the Laser Flash Method.

    Yoshio Waseda, Hiromichi Ohta, Hiroyuki Shibta, Tsuyoshi Nishi

    High Temperature Materials and Processes　21　387-398　2003

  124. Ni‐Znナノ粒子の表面活性制御

    牧原昌平, 柴田浩幸, 山本勝俊, 佐藤修彰, 村松淳司, 早稲田嘉夫, 高橋英志, 松原英一郎

    日本金属学会講演概要　131st　124　2002/11/02

    ISSN： 1342-5730

  125. Thermal Diffusivity Measurement of Metallic Thin Films by Means of a Femtosecond Thermoreflectance Technique.

    柴田浩幸, 太田弘道, 宮下正巳, 野口敬員, 佐藤俊一, 早稲田嘉夫

    東北大学多元物質科学研究所素材工学研究い報　58　(1/2)　7-18　2002/04

    ISSN： 1348-4052

  126. 共焦点走査型レーザー顕微鏡による高温材料プロセスの”その場”観察

    柴田浩幸

    日本金属学会会報　41　(12)　874-875　2002/04

    Publisher: The Japan Institute of Metals and Materials

    DOI： 10.2320/materia.41.874 　

    ISSN： 1340-2625

  127. Measurement of Thermal Diffusivity and Conductivity of Molten Metals.

    Tsuyoshi Nishi, Hiroyuki Shibata, Hiromichi Ohta, Yoshio Waseda

    Advanced Materials Processing Building, IMRAM, Tohoku University　58　(1,2)　61-68　2002/04

  128. Effect of solidification of mold fluxes on the heat transfer in casting mold

    JW Cho, H Shibata

    JOURNAL OF NON-CRYSTALLINE SOLIDS　282　(1)　110-117　2001/04

    DOI： 10.1016/S0022-3093(01)00333-7 　

    ISSN： 0022-3093

  129. <記事>組成評価研究分野 (2000.1-2000.12)(研究活動報告)

    早稲田 嘉夫, 井上 博文, 齋藤 正敏, 柴田 浩幸, 高橋 英志, 津 宇一, 鈴木 淳, 武山 昭徳, 宮下 正己, 大久保 和也, 中村 貴宏, 西 剛史, Kang Shinchul, Mitev Pavlin D, Zhou Bingyi, Shinohara Armando H

    東北大学素材工学研究所彙報　56　(1)　134-135　2001/03/01

    Publisher: 東北大学

    ISSN： 0919-4827

  130. Heat Transfer and Solidifying Shell Formation during the Early Stage of Solidification of Peritectic Medium Carbon Steel

    SUZUKI Mikio, SHIBATA Hiroyuki

    CAMP-ISIJ　10　(4)　902-902　1999/09/05

    ISSN： 0914-6628

  131. In-Situ Observation of Pertiectic Transformation during Solidification of Iron Base Alloy Melt

    ARAI Yuji, SHIBATA Hiroyuki, YIN Honhbin, SUZUKI Mikio, EMI Toshihiko

    10　(4)　907-907　1999/09/05

    ISSN： 0914-6628

  132. Interfacial Thermal Resistance between Mold Fluxes and Continuous Casting Mold

    CHO Jungwook, SHIBATA Hiroyuki, EMI Toshihiko, SUZUKI Mikio

    10　(4)　891-891　1999/09/05

    ISSN： 0914-6628

  133. Morphological Instability of δ-Ferrite/γ-Austenite Interphase Boundary in Low Carbon Steels

    HONGBIN Yin, SHIBATA Hiroyuki

    12　(4)　838-838　1999/09/01

    ISSN： 0914-6628

  134. <記事>組成評価研究分野 (1999.1-1999.12) (研究活動報告)

    早稲田 嘉夫, 井上 博文, 齋藤 正敏, 柴田 浩幸, 高橋 英志, 津 宇一, 宇田 哲也, Darjaa T, 石山 理, 今永 拓男, 斉藤 孝明, 鈴木 淳, 武山 昭徳, 宮下 正己, 大久保 和也, 中村 貴宏, 西 剛史, Kang Shin Chul, Mitev Pavlin Dakev, Zhou Bingyi

    東北大学素材工学研究所彙報　55　(1)　130-131　1999

    Publisher: 東北大学

    ISSN： 0919-4827

  135. Determination of Free energy of δ-Ferrite/γ-Austenite Interphase Boundary of Low Carbon Steels "In-situ" Observation

    HONGBIN Yin, EMI Toshihiko, SHIBATA Hiroyuki

    ISIJ Int.　11　(4)　794-794　1998/09/01

    ISSN： 0914-6628

  136. In-situ Observation of Intra-Granular Ferrite Nucleation from Oxides

    HANAMURA Toshihiro

    CAMP-ISIJ　11　(6)　1187-1187　1998/09/01

    ISSN： 0914-6628

  137. <記事>ベースメタル研究ステーション (1997.1-1997.12)(研究活動報告)

    江見 俊彦, 日野 光久, 鈴木 幹雄, 柴田 浩幸, 結城 典夫, 趙 重郁, 荒井 勇次, 吉永 聡, 八木 順一郎, 水渡 英昭, 板垣 乙未生, 葛西 栄輝, 菊池 淳, 井口 泰孝, 山村 力, Hongbin Yin, 量子精製研究分野, 気相制御研究分野, 量子精製研究分野, 量子精製研究分野, システム評価研究分野, 融体相制御研究分野, 気相制御研究分野, 物理再生プロセス研究分野, 工学部金属工学科, 工学部金属工学科, 工学部金属工学科

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　53　(1)　124-125　1998/03/27

    ISSN： 0919-4827

  138. <記事>量子精製研究分野 (1997.1-1997.12)(研究活動報告)

    江見 俊彦, 鈴木 幹雄, 佐藤 俊一, 柴田 浩幸, 尹 弘斌, 結城 典夫, 趙 重郁, 荒井 勇次, 吉永 聡

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　53　(1)　104-105　1998/03/27

    ISSN： 0919-4827

  139. <記事>(3) モールドフラックスを介しての鋼の連鋳鋳型内伝熱(主題 : 素材・材料プロセスに係わる物性と評価)(素材工学研究所第 6 回研究懇談会)(素材工学研究会記事)

    柴田 浩幸, 早稲田 嘉夫

    東北大学素材工学研究所彙報　53　(1)　138-138　1998/03/27

    Publisher: 東北大学

    ISSN： 0919-4827

  140. Initial Solidification and Tensile Strength at Elevated Temperatures of Carbon Steels

    SHIBATA Hiroyuki

    11　(1)　36-37　1998/03/05

    ISSN： 0914-6628

  141. In-situ Observation of Peritectic Reaction of Iron Base Alloy

    SHIBATA Hiroyuki

    11　(1)　112-112　1998/03/05

    ISSN： 0914-6628

  142. <記事>量子精製研究分野 (1998.1-1998.12) (研究活動報告)

    江見 俊彦, 溝口 庄三, 鈴木 幹雄, 佐藤 俊一, 柴田 浩幸, 尹 弘斌, 結城 典夫, 趙 重郁, 荒井 勇次, 吉永 聡

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　54　(1)　86-87　1998/01/01

    ISSN： 0919-4827

  143. <記事>組成評価研究分野 (1998.1-1998.12) (研究活動報告)

    早稲田 嘉夫, 井上 博文, 齋藤 正敏, 柴田 浩幸, 篠田 弘造, 佐藤 成男, 津 宇一, 宇田 哲也, Darjaa T, 野口 敬員, 石山 理, 今永 拓男, 斉藤 孝明, 鈴木 淳, 武山 昭徳, 宮下 正己, Park Chang Yong, Kang Shin Chul, Mitev Pavlin Dakev

    東北大学素材工学研究所彙報　54　(1)　100-101　1998

    Publisher: 東北大学

    ISSN： 0919-4827

  144. <記事>ベースメタル研究ステーション (1998.1-1998.12) (研究活動報告)

    江見 俊彦, 溝口 庄三, 日野 光久, 鈴木 幹雄, 柴田 浩幸, 早稲田 嘉夫, 八木 順一郎, 水渡 英昭, 板垣 乙未生, 葛西 栄輝, 谷口 尚司, 日野 光兀, 山村 力

    東北大学素材工学研究所彙報　54　(1)　110-111　1998

    Publisher: 東北大学

    ISSN： 0919-4827

  145. Confocal Scaanning Laser Microscope Technique to"In-situ"Observe Phase Transformations and Behaviors of Nonmetallic Inclvsions and Precipitates in Metals at Elevated Temperatures

    SHIBATA Hiroyuki, EMI Toshihiko

    36　(8)　809-813　1997/08

    Publisher: 日本金属学会

    ISSN： 1340-2625

  146. In-Situ Observation of Crystallization of Mold Fluxes for Continuous Casting of Steel

    柴田 浩幸

    The Bulletin of the Institute for Advanced Materials Processing Tohoku University(SOZAIKEN IHO)　53/1,2,47-52　1997/04

  147. Measurement of Critical Strain of Crack Formation of Steel by Hot Tensile and Bending Tests under Temperature Gradient to Simulate Solidifying Shell in Mold

    Hiroshi Hayashi, Chonghee Yu, Hiroyuki Shibata, Mikio Suzuki, Toshihiko Emi, Faculty of Engineering Tohoku University, Japanese Government, Scholarship Program for Foreign Students in the Special Curse on Mineral Processing Technology and Metallurgical and Materials Engineering Tohoku University, Institute for Advanced Materials Processing Tohoku University, Institute for Advanced Materials Processing Tohoku University, Institute for Advanced Materials Processing Tohoku University

    Bulletin of the Institute for Advanced Materials Processing, Tohoku University　52　(1)　39-44　1997/03/28

    Publisher: 東北大学素材工学研究所

    ISSN： 0919-4827

  148. <記事>ベースメタル研究ステーション (1996. 1-1996. 12) (研究活動報告)

    江見 俊彦, 日野 光久, 鈴木 幹雄, 柴田 浩幸, 趙 重郁, 佐藤 英憲, 林 浩史, 荒井 勇次, 吉永 聡, 柳 正煕, 八木 順一郎, 水渡 英昭, 板垣 乙未生, 葛西 栄輝, 菊池 淳, 井口 泰孝, Hongbin Yin, 量子精製研究分野, 気相制御研究分野, 量子精製研究分野, 量子精製研究分野, システム評価研究分野, 融体相制御研究分野, 気相制御研究分野, 物理再生プロセス研究分野, 工学部金属工学科, 工学部金属工学科

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　52　(1)　190-191　1997/03/28

    ISSN： 0919-4827

  149. <記事>量子精製研究分野 (1996. 1-1996. 12)(研究活動報告)

    江見 俊彦, 鈴木 幹雄, 佐藤 俊一, 柴田 浩幸, 尹 弘斌, 柳 正煕, 趙 重郁, 林 浩史, 佐藤 英憲, 米山 俊夫, 荒井 勇次, 吉永 聡

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　52　(1)　166-167　1997/03/28

    ISSN： 0919-4827

  150. In-situ Observation of Engulfment and Pushing of Molten Globular Inclusions by Advancing Liquid/Solid Interface in Steel Melt

    YOSHINAGA Satoru, YIN Hong-bin, SHIABTA Hiroyuki, SUZUKI Mikio, EMI Toshihiko

    10　(1)　128-128　1997/03/27

    ISSN： 0914-6628

  151. Measurement of the Critical Strain for Transverse Crack Formation in Contiuously Cast Slabs

    HAYASHI Hiroshi, SHIBATA Hiroyuki, SUZUKI Mikio, EMI Toshihiko

    10　(1)　249-249　1997/03/27

    ISSN： 0914-6628

  152. Collision/Agglomeration Behavior of Non-Metallic Inclusions on Steel Melt/Gas Interface

    EMI Toshihiko, YIN Hongbin, SHIBATA Hiroyuki

    10　(1)　93-96　1997/03/27

    ISSN： 0914-6628

  153. 成長していくのが直接見えた!

    柴田 浩幸, 江見 俊彦

    バウンダリ-　12　(9)　2-4　1996/09

    Publisher: コンパス社

    ISSN： 0916-2402

  154. 量子精製研究分野 (1995. 1-1995. 12)(研究活動報告)

    江見 俊彦, 鈴木 幹雄, 佐藤 俊一, 柴田 浩幸, 安中 紀昭, 柳 正煕, 李 義權, 近藤 幸一, 近間 大志, 齊藤 元昭, 林 浩史, 佐藤 英憲, 米山 俊夫, Sjoberg Pontus

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　51　(1)　112-113　1995/12/01

    ISSN： 0919-4827

  155. ベースメタル研究ステーション (1995. 1-1995. 12)(研究活動報告)

    江見 俊彦, 日野 光久, 鈴木 幹雄, 柴田 浩幸, 近藤 幸一, 近間 大志, 林 浩史, 佐藤 英憲, 柳 正煕, 李 義権, 八木 順一郎, 水渡 英昭, 板垣 乙未生, 葛西 栄輝, 菊池 淳, 井口 泰孝, Sjoberg Pontus, 東北大学量子精製研究分野, 東北大学気相制御研究分野, 東北大学量子精製研究分野, 東北大学量子精製研究分野, スウェーデン王立工科大学, 東北大学システム評価研究分野, 東北大学融体相制御研究分野, 東北大学気相制御研究分野, 東北大学機械精製研究分野, 東北大学工学部金属工学科, 東北大学工学部金属工学科

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　51　(1)　134-135　1995/12/01

    ISSN： 0919-4827

  156. Application of Confocal Laser Microscope for Material Technology

    柴田 浩幸

    The Bulletin of the Institute for Advanced Materials Processing Tohoku University　51　(1&2)　35　1995/04

  157. Development of High Temperature Stress-Strain Test with Temperature Gradient Applied to Test-Pieces

    柴田 浩幸

    The Bullitin of the Institute for Advanced Materials Processing Tohoku University　51　(1&2)　49　1995/04

  158. ベースメタル研究ステーション (1994. 1-1994. 12) (研究活動報告)

    江見 俊彦, 日野 光久, 鈴木 幹雄, 柴田 浩幸, 津井 祐司, 近藤 幸一, 近間 大志, 柳 正煕, 李 義權, 八木 順一郎, 水渡 英昭, 板垣 乙未生, 葛西 栄輝, 菊池 淳, 井口 泰孝, 阿座上 竹四, 東北大学量子精製研究分野, 東北大学気相制御研究分野, 東北大学量子精製研究分野, 東北大学量子精製研究分野, 東北大学システム評価研究分野, 東北大学融体相制御研究分野, 東北大学気相制御研究分野, 東北大学機械精製研究分野, 東北大学工学部金属工学科, 東北大学工学部金属工学科, 東北大学工学部金属工学科

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　50　(1)　216-217　1994/12/01

    ISSN： 0919-4827

  159. 量子精製研究分野 (1994. 1-1994. 12) (研究活動報告)

    江見 俊彦, 鈴木 幹雄, 佐藤 俊一, 柴田 浩幸, 津井 祐司, 近藤 幸一, 近間 大志, 齊藤 元昭, 柳 正煕, 李 義權

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　50　(1)　194-195　1994/12/01

    ISSN： 0919-4827

  160. DETERMINATION OF THERMAL DIFFUSIVITIES OF CONTINUOUS-CASTING POWDERS FOR STEEL BY PRECISELY EXCLUDING THE CONTRIBUTION OF RADIATIVE COMPONENT AT HIGH-TEMPERATURE

    H OHTA, M MASUDA, K WATANABE, K NAKAJIMA, H SHIBATA, Y WASEDA

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　80　(6)　463-468　1994/06

    DOI： 10.2355/tetsutohagane1955.80.6_463 　

    ISSN： 0021-1575

  161. <記事>量子精製研究分野 (1993.1-1993.12) (研究活動報告)

    江見 俊彦, 佐藤 俊一, 柴田 浩幸, 津井 祐司, 柳 正煕

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　49　(1)　144-145　1994/03/30

    ISSN： 0919-4827

  162. 〓

    A. H. Shinohara, C. Reynales, T. Darjaa, L. S. Pangum

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　49　(1)　158-159　1994/03/30

    Publisher: 東北大学素材工学研究所

    ISSN： 0919-4827

  163. Computer Simulation for Estimating the Effective Thermal Conductivity of Compsite Materials under the Unsteady Heat Flow Condition

    柴田 浩幸

    the Bulletin of the Institute for Advanced Materials Processing　49　(1-2)　45　1993/04

  164. 〓

    G. Petkov, A. H. Shinohara, J. W. Essel, C. Reynales

    東北大学素材工学研究所彙報 = Bulletin of the Institute for Advanced Materials Processing, Tohoku University　48　(1)　184-185　1993/03/30

    Publisher: 東北大学素材工学研究所

    ISSN： 0919-4827

  165. Thermal Diffusivity Measurements of Thin Films.

    柴田浩幸, 太田弘道, 早稲田嘉夫

    日本金属学会会報　30　(8)　695-705　1991/08

    Publisher: 日本金属学会

    DOI： 10.2320/materia1962.30.695 　

    ISSN： 0021-4426

  166. MEASUREMENT OF THERMAL-DIFFUSIVITY OF PYROCERAM 9606 BY THE LASER FLASH METHOD

    H OHTA, T TSUKIDA, Y TOMOTA, H SHIBATA, G OGURA, Y WASEDA

    NIPPON SERAMIKKUSU KYOKAI GAKUJUTSU RONBUNSHI-JOURNAL OF THE CERAMIC SOCIETY OF JAPAN　99　(6)　483-488　1991/06

    DOI： 10.2109/jcersj.99.483 　

    ISSN： 0914-5400

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Books and Other Publications 9

  1. 乾式プロセス

    佐藤 修彰, 柴田 浩幸, 柴田 悦郎

    内田老鶴圃　2021/08/25

  2. 熱量測定・熱分析ハンドブック 第３版

    日本熱測定学会, 柴田浩幸

    丸善出版　2020/08/30

  3. 鉄鋼の凝固

    日本学術振興会製鋼第, 委員会凝固プロセス研究会編

    2015/03

    More details Close

    859

  4. 融かして測る 高温物性の手作り実験室

    編著 白石裕, 阿座上竹四

    2011/07

  5. 熱量測定・熱分析ハンドブック 第２版

    日本熱測定学会

    2010/01

  6. サステナブル金属素材プロセス入門

    中村崇 編, 柴田浩幸, 北村信也

    アグネ技術センター　2009/04

  7. Themal Diffusivity Measurements of Oxide and Metallic Melts at High Temperature by the Laser Flash Method.

    Hiroyuki Shibata, Hiromichi Ohta, Yoshio Waseda

    Springer (Editors: Hiroyuki Fukuyama, Yoshio Waseda)　2008/06

  8. 赤外線加熱工学ハンドブック

    柴田浩幸

    (株）アグネ技術センター　2003/11

  9. 融体材料の熱拡散率測定

    Hiromichi Ohta, Hiroyuki Shibata, Yoshio Waseda

    アグネ技術センター　2003/04

Show all Show first 5

Presentations 145

  1. Effect of adding rare-earth oides on the solubilit of MoO3 in silicate melts

    Qiao Huang, Sohei Sukenaga, Masanori Tashiro, Hiroyuki Shibata

    2025/03/09

  2. カルシウムフェライトの凝固組織に及ぼす冷度およびアルミニウム添加の影響

    鳥毛翔太, 柴田浩幸, 助永壮平, 田代公則

    日本鉄鋼協会 第189回春季講演大会　2025/03/09

  3. アルカリケイ酸塩ガラスにおけるフォノンの平均自由行程の組成依存性

    二階堂翔太郎, 柴田浩幸, 助永壮平

    日本鉄鋼協会 第189回春季講演大会　2025/03/09

  4. 電気炉スラグの熱物性測定

    Sun Jinyang, 柴田浩幸, 助永壮平

    日本鉄鋼協会 第189回春季講演大会　2025/03/09

  5. ケイ酸塩ガラスおよび融体におけるフォノンの平均自由行程の組成依存性

    助永壮平, 小里文太, 二階堂将太郎, 横哲, 笘居高明, 深谷宏, 柴田浩幸, 小野寺陽平, 小原真司, 清水雅弘, 川西咲子, 遠藤理恵, 西剛史, 太田弘道

    日本鉄鋼協会 第189回春季講演大会　2025/03/10

  6. 準古典・古典分子動力学計算によるケイ酸塩融液およびガラスの熱伝導率の支配因子の解析

    清水雅弘, 野口勇真, 下間靖彦, 三浦清貴, 助永壮平, 遠藤理恵

    日本鉄鋼協会 第189回春季講演大会　2025/03/10

  7. アルカリアルミノケイ酸塩融体の熱伝導率評価の現状

    西剛史, 太田弘道, 遠藤理恵, 清水雅弘, 助永壮平, 柴田浩幸

    日本鉄鋼協会 第189回春季講演大会　2025/03/10

  8. Influence of cooling rate and alumina addition on the structure of solidified calcium ferrite International-presentation

    Shota Torige, Sohei Sukenaga, Masahiro Tashiro, Hiroyuki Shibata

    2024 Tohoku-NTUT Joint Symposium　2024/11/26

  9. Effect of adding rare-earth oxides on the incorporation limit of MoO3 in silicate glasses International-presentation

    Qiao Huang, Sohei Sukenaga, Masanori Tashiro, Hiroyuki Shibata

    2024 Tohoku-NTNU Joint Symposium　2024/11/26

  10. Visualization of metallurgical phenomena International-presentation Invited

    Hiroyuki Shibata, Sakiko Kawanishi, Sohei Sukenaga

    2024 Metallurgy Innovative Development International Academic Conference　2024/10/18

  11. ナトリウムケイ酸塩ガラス中でのチタニウムイオンの存在状態

    助永壮平, 高草木寧緒, 篠田弘造, 山田大貴, 脇原徹, 西山裕介, 安東真理子, 柴田浩幸

    第6回放射性廃棄物固化体討論会　2024/09/27

  12. Effect of cooling rate and aluminum addition on the structure of solidified calcium ferrite

    Shota Torige, Sohei Sukenaga, Masanori Tashiro, Hiroyuki Shibata

    The 188th ISIJ Autumn Meeting　2024/09/18

  13. Assignment of Raman signal related to local structure near Ti cation in silicate glasses

    Sohei Sukenaga, Neo Takakusagi, Ryo Uchida, Hiroki Yamada, Toru Wakihara, Kozo Shinoda, Yusuke Nishiyama, Hiroyuki Shibata

    The 188th ISIJ Autumn Meeting　2024/09/18

  14. CaO-SiO2 系フラックスの粘度および熱伝導度に及ぼす TiO2/SiO2 比の影響

    内田稜, 助永壮平, 田代公則, 柴田浩幸

    日本鉄鋼協会第188回秋季講演大会188　2024/09/19

  15. 酸窒化物融体を反応場とした鉄の還元機構の解明

    福地唯史, 助永壮平, 田代公則, 柴田浩幸

    日本鉄鋼協会第188回秋季講演大会　2024/09/19

  16. Compositional Dependence of Thermophysical Properties for Oxide Glasses International-presentation Invited

    Sohei Sukenaga, Bunta Ozato, Hiroyuki Shibata

    International Commission on Glass Annual Meeting 2024　2024/08/28

  17. Expectations for control of slag properties

    Sohei Sukenaga, Hiroyuki Shibata

    2024/08/09

  18. ガラス物性理解のためのNMR測定 Invited

    助永壮平, 柴田浩幸

    第72回固体NMR・材料フォーラム　2024/06/14

  19. Application of time-resolved fluorescence imaging for visualization of metallurgical phenomena International-presentation Invited

    Hiroyuki Shibata, Sakiko Kawanishi, Hinako Nakayama, Shingo Terashima, Mayu Fujita, Yuki Tsukahara, Sohei Sukenaga

    16th Japan-China symposium　2024/06/12

  20. Visualization of metallurgical phenomena International-presentation Invited

    Hiroyuki SHIBATA

    GIFT Colloquium POSTECH　2024/05/23

  21. Application of time-resolved fluorescence imaging for visualization of metallurgical phenomena International-presentation Invited

    Hiroyuki Shibata, Sakiko Kawanishi, Hinako Nakayama, Shingo Terashima, Mayu Fujita, Yuki Tsukahara, Sohei Sukenaga

    Forum on the Science and Technology of the Future Steelmaking Research　2024/05/21

  22. Dominant factor for thermal conductivity in silicate melts: a molecular dynamics study

    The 187th ISIJ Meeting　2024/03/13

  23. Measurement Conditions for Thermal Conductivity of Oxide Melts Using Transient Hot-Wire Method - A Study Using Finite Element Method -

    The 187th ISIJ Meeting　2024/03/13

  24. Compositional dependence of phonon mean free path in oxide glasses

    Sohei Sukenaga, Bunta Ozato, Akira Yoko, Takaaki Tomai, Masahiro Shimizu, Rie Endo, Tsuyoshi Nishi, Hiromichi Ohta, Sakiko Kawanishi, Hiroyuki Shibata

    The 187th ISIJ Meeting　2024/03/13

  25. THERMAL CONDUCTIVITY OF CaO-CaF2-SiO2 MELTS

    The 187th ISIJ Meeting　2024/03/13

  26. カルシウムフェライトの凝固組織に及ぼす冷却速度の影響

    鳥毛翔太, 助永壮平, 田代公則, 柴田浩幸

    日本鉄鋼協会 第187回春季講演大会　2024/03/14

  27. Variation of incorporation limit of molybdenum in sodium silicate glasses with the addition of rare-earth oxides

    黄喬, 助永壮平, 田代公則, 柴田浩幸

    日本鉄鋼協会 第187回春季講演大会　2024/03/14

  28. CaO-SiO2系スラグの粘度に及ぼす酸化チタン濃度および 酸化状態の影響

    助永壮平, 内田稜, 柴田浩幸, 内藤憲一郎

    製鋼科学技術コンソーシアム令和５年度第３回研究会　2024/01/23

  29. Application of time-resolved fluorescence imaging for visualization of metallurgical phenomena Invited

    Sakiko Kawanishi, Shingo Terashima, Yuki Tsukahara, Mayu Fujita, Hinako Nakayama, Sohei Sukenaga, Hiroyuki Shibata

    第3回日独北欧合同シンポジウム　2023/10/16

  30. アルカリケイ酸塩ガラスにおける熱伝導度の温度および組成依存性

    小里文太, 助永壮平, 柴田浩幸

    日本鉄鋼協会第186回秋季講演大会 学生PSセッション　2023/09/21

  31. Crystallization kinetics of the CaO-SiO2-Al2O3-MgO system inclusions

    Yong Wang, Sohei Sukenaga, Masanori Tashiro, Hua Zhang, Hongwei Ni, Hiroyuki Shibata

    186th ISIJ Meeting　2023/09/22

  32. 共焦点レーザー顕微鏡を用いたサクシノニトリル系溶液におけるミクロ偏析の3次元挙動

    塚原優希, 川西咲子, 柴田浩幸

    日本鉄鋼協会, 第186回秋季講演大会　2023/09/20

  33. 蛍光顕微鏡を用いたサクシノニトリル系溶液の凝固過程におけるミクロ偏析イメージング

    川西咲子, 塚原優希, 寺島慎吾, 柴田浩幸

    日本鉄鋼協会, 第186回秋季講演大会　2023/09/21

  34. フェノール樹脂を炭素源に用いた緻密SiCの作製

    川西咲子, 三谷武志, CHAUSSENDE Didier, 吉川健, 柴田浩幸

    日本金属学会, 2023年秋期第173回講演大会　2023/09/22

  35. Na2O-SiO2-B2O3系ガラスマトリックスに対するTiO2の含有限界濃度

    高草木寧緒, 助永壮平, 篠田弘造, 柴田浩幸

    日本金属学会2023年秋期講演大会　2023/09/19

  36. 自熔炉におけるマグネタイト/マット間の反応解析

    川西咲子, 申勝煥, 助永壮平, 高橋純一, 柴田浩幸

    資源・素材学会, 2023年度資源・素材関係学協会合同秋季大会　2023/09/13

  37. ボロシリケートガラスマトリックスに対するTiO2の含有限界濃度

    高草木寧緒, 助永壮平, 篠田弘造, 柴田浩幸

    第54回ガラス部会夏季若手セミナー　2023/09/01

  38. アルカリケイ酸塩ガラスにおける熱伝導度の温度および組成依存性

    小里文太, 助永壮平, 柴田浩幸

    第54回ガラス部会夏季若手セミナー　2023/09/01

  39. In-situ observation of 4H-SiC{0001} dissolution into molten alloy at 1500 K

    Sakiko Kawanishi, Hiroyuki Shibata and Takeshi Yoshikawa

    23rd American Conference on Crystal Growth and Epitaxy (ACCGE-23)　2023/08/16

  40. 遷移金属酸化物の酸化物ガラスマトリックスへの含有限界濃度 Invited

    助永壮平

    日本鉄鋼協会 評価・分析・解析部会 高温における最適な材料プロセス制御を目指した材料特性評価フォーラム シンポジウム　2023/08/09

  41. Change in local structure near molybdenum cations with variation of MoO3 content in a sodium borate glass

    Sohei Sukenaga, Tetsuo Kishi, Hiroki Unozawa, Neo Takakusagi, Mariko Ando, Yuki Chiba, Masanori Tashiro, Sakiko Kawanishi, Hiroyuki Shibata

    GOMD 2023　2023/06/06

  42. van der Pauw 法によるセル定数を用いない CaO-Al2O3-CaF2 系フラックスの電気伝導率測定

    齊藤敬高, 助永壮平, 柴田浩幸, 中島邦彦

    製鋼科学技術コンソーシアム 反応プロセス研究会　2023/06/01

  43. 循環社会におけるマグネシウムの役割（マテリアル・セキュリテイとして） Invited

    柴田浩幸

    Mg‐Day in KUMEJIMA Ⅳ　2023/03/27

  44. 融体・ガラスの粘度測定方法と組成・温度依存性データの見方 Invited

    助永壮平

    2022年度 ガラス物性測定コンソーシアム専門講習会　2023/03/24

  45. 鉄鋼製精錬に関連した多成分系酸化物の融体物性 Invited

    助永壮平

    日本鉄鋼協会 第185回春季講演大会　2023/03/09

  46. 溶融Si-Cr合金への黒鉛およびSiCの溶解速度

    五十嵐壮太, 川西咲子, 三谷武志, 吉川健, 柴田浩幸

    日本金属学会 2023年春期第172回講演大会　2023/03/09

  47. サクシノニトリル系合⾦を⽤いた凝固過程のミクロ偏析の定量評価

    塚原優希, 川西咲子, 柴田浩幸

    日本鉄鋼協会 第185回春季講演大会　2023/03/09

  48. Effect of MgO content on the viscosity of copper slag

    Yong Wang, Sohei Sukenaga, Masanori Tashiro, Sakiko Kawanishi, Hiroyuki Shibata

    2023/03/09

  49. ナトリウムボロシリケート系ガラス中への酸化モリブデンの含有限界濃度

    助永壮平, 岸哲生, 宇野澤大槻, 高草木寧緒, 安東真理子, 田代公則, 川西咲子, 柴田浩幸

    日本鉄鋼協会 第185回春季講演大会　2023/03/09

  50. サクシノニトリル系溶液を用いた凝固過程のミクロ偏析および介在物生成挙動の評価

    川西咲子, 寺島慎吾, 塚原優希, 柴田浩幸

    日本鉄鋼協会 第185回春季講演大会　2023/03/08

  51. 窒素またはフッ素を含有するカルシウムケイ酸塩融体における粘度の剪断速度依存性

    橋本一輝, 助永壮平, 柴田浩幸

    第63回ガラスおよびフォトニクス材料討論会　2022/12/06

  52. これからのMg金属の製錬について Invited

    柴田浩幸

    Mg‐Day in IWAKI　2022/11/21

  53. 放射性廃棄物の減容化に向けたガラス固化技術基盤研究 ガラスマトリックスの開発2021年度成果概要

    大和久耕平, 塚田毅志, 兼平憲男, 菅原透, 助永壮平, 柴田浩幸, 矢野哲司, 齊藤敬高, 中島 邦彦

    第4回放射性廃棄物固化体討論会　2022/10/20

  54. Na2O–B2O3–SiO2系ガラスへのMoO3の含有限界に及ぼすB2O3/SiO2比の影響

    助永壮平, 宇野澤大槻, 千葉裕輝, 田代公則, 川西咲子, 柴田浩幸

    第4回放射性廃棄物固化体討論会　2022/10/20

  55. Viscosity of silicate melts containing transition metal cations

    Sohei Sukenaga, Issei Takahashi, Kozo Shinoda, Daniel R. Neuville, Sakiko Kawanishi, Hiroyuki Shibata

    The 13th Asian Thermophysical Properties Conference ATPC2022　2022/09/28

  56. SiC/C圧粉体へのSiの反応性含浸による高かさ密度SiC作製

    五十嵐壮太, 川西咲子, 三谷武志, Didier Chaussende, 吉川健, 柴田浩幸

    日本金属学会 2022年秋期第171回講演大会　2022/09/22

  57. カルシウムケイ酸塩融体の粘度に及ぼす窒素またはフッ素添加の影響

    橋本一輝, 助永壮平, 柴田浩幸

    日本鉄鋼協会 第184回秋季講演大会　2022/09/21

  58. アルカリケイ酸塩融体の粘度に及ぼすAlO1.5/SiO2比の影響

    助永壮平, 生駒諒太, 田代公則, 川西咲子, 柴田浩幸

    日本鉄鋼協会 第184回秋季講演大会　2022/09/21

  59. 蛍光イメージング法によるCaSiO3及びCaMgSi2O6の溶出機構の検討

    藤田 真由, 川西 咲子, 川野 潤, 助永 壮平, 柴田 浩幸

    日本鉄鋼協会 第184回秋季講演大会　2022/09/21

  60. 銅製錬スラグの粘度測定

    助永 壮平, 高橋 一誠, 田代 公則, 川西 咲子, 柴田 浩幸

    資源・素材2022　2022/09/06

  61. Time-resolved fluorescence imaging of microsegregation and inclusion precipitation during solidification

    Sakiko Kawanishi, Shingo Terashima, Sohei Sukenaga, Hiroyuki Shibata

    8th International Congress on the Science and Technology of Steelmaking　2022/08/13

  62. Brドープn型SnSe単結晶の熱電特性

    川西咲子, 今里和樹, 太田道広, 柴田浩幸

    第19回日本熱電学会学術講演会　2022/08/09

  63. 日本国内でのMg金属地金の製造を目指して Invited

    柴田浩幸

    Mg‐Day in KUM EJIMA Ⅲ　2022/04/21

  64. 蛍光イメージング法によるCaSiO3へのMgO添加によるCa2+溶出抑制のその場解析

    藤田真由, 川西咲子, 川野潤, 助永壮平, 柴田浩幸

    日本鉄鋼協会 第183回春季講演大会　2022/03/16

  65. 溶融Si-Cr合金中窒素の熱力学量の評価

    川西咲子, 八野田将吾, 助永壮平, 柴田浩幸

    日本鉄鋼協会 第183回春季講演大会　2022/03/16

  66. ケイ酸塩融体の粘度に及ぼすフッ素および窒素添加の影響 Invited

    助永壮平, 小川将幸, 簗場豊, 安東真理子, 柴田浩幸

    日本鉄鋼協会 第183回春季講演大会　2022/03/16

  67. アルカリ土類鉄ケイ酸塩融体および過冷却液体の粘度

    助永壮平, 高橋一誠, 篠田弘造, 川西咲子, 柴田浩幸

    日本鉄鋼協会 第183回春季講演大会　2022/03/16

  68. In-situ observation of SO2 gas formation at the magnetite/matte interface at 1200 °C

    Seung-Hwan Shin, Sakiko Kawanishi, Sohei Sukenaga, Junichi Takahashi, Hiroyuki Shibata

    TMS 2022　2022/03/14

  69. Ca2+ and pH Imaging during Dissolution of CaSiO3 into Aqueous Solution

    Sakiko Kawanishi, Hinako Nakayama, Jun Kawano, Takeshi Yoshikawa, Hiroyuki Shibata

    TMS 2022　2022/03/14

  70. Na2O-SiO2-B2O3三元系における酸化モリブデンの見かけの溶解度評価

    助永壮平, 宇野澤大槻, 田代公則, 川西咲子, 柴田浩幸

    第3回放射性廃棄物固化体討論会　2022/01/17

  71. Calcium Elution Mechanism from Silicate-Based Minerals into Water Invited

    SHIBATA Hiroyuki, FANG Ruang, KAWANISHI Sakiko, SUKENAGA Sohei

    2021 China Symposium on Sustainable Iron- and Steelmaking Technology　2021/12/15

  72. Thermal conductivity of alkali silicate glasses and melts

    Sohei Sukenaga, Takahiko Endoh, Tsuyoshi Nishi, Sakiko Kawanishi, Hiromichi Ohta, Hiroyuki Shibata

    ASIA STEEL 2021　2021/12/08

  73. Visualization of micro segregation and formation of inclusions during solidification of a model alloy by fluorescence imaging

    Shingo Terashima, Sakiko Kawanishi, Hiroyuki Shibata

    IMRAM-Taipei Tech joint symposium　2021/11/30

  74. SiC solution growth using SiC/graphite gradient crucible

    Sakiko Kawanishi, Hiroyuki Shibata, Takeshi Yoshikawa

    European Conference on Silicon Carbide and Related Materials 2020-2021　2021/10/26

  75. SiC溶液成長におけるプラントル数の重要性

    川西咲子, 阿部舞, 吉川健, 柴田浩幸

    日本金属学会 2021年秋期 第169回講演大会　2021/09/16

  76. Effect of FeS concentration on SO2 formation at Cu2S-FeS matte/magnetite interface investigated by in-situ observation

    Seung Hwan Shin, Sakiko Kawanishi, Sohei Sukenaga, Junichi Takahashi, Hiroyuki Shibata

    2021/09/15

  77. 蛍光イメージング法によるミクロ偏析挙動の可視化

    寺島慎吾, 川西咲子, 柴田浩幸

    日本鉄鋼協会 第182回秋季講演大会　2021/09/03

  78. Solution growth of large single crystals of n-type tin monosulfide

    Sakiko Kawanishi, Issei Suzuki, Takahisa Omata, Hiroyuki Shibata

    22nd American Conference on Crystal Growth and Epitaxy (ACCGE-22)　2021/08/03

  79. Fabrication of pn homojunction of SnS and its photovoltaic properties

    Issei Suzuki, Sakiko Kawanishi, Sage Bauers, Andriy Zakutayev, Hiroyuki Shibata, Hiroshi Yanagi, Takahisa Omata

    2021 Virtual MRS Spring Meeting & Exhibit　2021/04/18

  80. N-Type SnS Thin Films Applicable for Homojunction Solar Cells

    Issei Suzuki, Sakiko Kawanishi, Sage Bauers, Andriy Zakutayev, Hiroyuki Shibata, Minesok Kim, Hiroshi Yanagi, Takahisa Omata

    2021 Virtual MRS Spring Meeting & Exhibit　2021/04/18

  81. 光干渉法を利用した凝固界面近傍での溶質濃度勾配の定量評価

    川西咲子, 塩沢優大, 柴田浩幸

    日本鉄鋼協会 第181回春季講演大会　2021/03/18

  82. 高温固液界面の3次元形状解析による融体中微量溶解度の測定

    川西咲子, 吉川健, Didier Chaussende, 柴田浩幸

    日本金属学会 2021年春期 第168回講演大会　2021/03/18

  83. アルカリケイ酸塩ガラスおよび動優待の熱伝導度

    助永壮平, 遠藤貴彦, 西剛史, 川西咲子, 太田弘道, 柴田浩幸

    日本金属学会 2021年春期 第168回講演大会　2021/03/18

  84. In-situ Observation of Interfacial Phenomena between Magnetite and Matte at High Temperature by a Novel Optical Microscopic Technique

    Seunghwan Shin, Sakiko Kawanishi, Sohei Sukenaga, Junichi Takahashi, Hiroyuki Shibata

    TMS2021 150th Annual Meeting and Exhibition　2021/03/16

  85. Thermophysical Properties of Silicate Melts and Glasses Invited

    SHIBATA Hiroyuki, SUKENAGA Sohei, NISHI Tsuyoshi, OHTA Hiromichi

    The 11th International Conference on Molten Slags, Fluxes and Salts　2021/02/23

  86. 高温冶金プロセスにおけるその場観察 Invited

    柴田浩幸

    素材プロセシング第69委員会第1分科会（非鉄製錬関連技術）[第61回]　2020/12/08

  87. Evaluation of temperature dependence of bandgap for in-situ discrimination of SiC polytypes

    Tomohiro Yamada, Sakiko Kawanishi, Hiroyuki Shibata

    IMRAM-Taipei Tech joint symposium　2020/11/30

  88. 鋼中介在物組成を模擬した酸化物と切削用工具材料の反応挙動解析

    楠下颯, 助永壮平, 柴田浩幸

    第 19 回 日本金属学会東北支部研究発表大会 (オンライン)　2020/11/20

  89. Alumina addition induced change in mechanical properties of alkali silicates glasses

    Kenta Ebe, Sohei Sukenaga, Yoshihiro Tawara, Hiroyuki Shibata

    IMRAM-Taipei Tech joint symposium　2020/11/20

  90. SnS単結晶の溶液成長におけるハロゲン成分の寄与

    川西咲子, 鈴木一誓, 小俣孝久, 柴田浩幸

    第49回結晶成長国内会議(JCCG-49)　2020/11/11

  91. Relationship between the Silicate Skeleton Structure and the Dissolution Kinetics of Calcium-Silicate Mineral Phases into Water

    Fang RUAN, Sakiko Kawanishi, Sohei Sukenaga, Hiroyuki Shibata

    2020/09/18

  92. Investigation of factors for decreasing reaction rate between magnetite and matte by novel in-situ interface observation technique

    Seung Hwan Shin, Sakiko Kawanishi, Sohei Sukenaga, Junichi Takahashi, Hiroyuki Shibata

    2020/09/15

  93. SiCポリタイプのその場判別に向けたバンドギャップの温度特性評価

    山田智大, 川西咲子, 柴田浩幸

    日本金属学会 2020年秋期(第167回)講演大会　2020/09/15

  94. pnホモ接合SnSの作製と太陽電池特性

    川西咲子, 鈴木一誓, Sage Bauers, Andriy Zakutayev, 柴田浩幸, 柳博, 小俣孝久

    第82回日本応用物理学会秋季学術講演会　2020/09/09

  95. スパッタリング法によるn 型SnS薄膜の作製

    鈴木一誓, 川西咲子, Sage Bauers, Andriy Zakutayev, 柴田浩幸, 柳博, 小俣孝久

    第82回日本応用物理学会秋季学術講演会　2020/09/09

  96. 6H-SiC の周期ステップ構造を利用した3C-SiC の核生成制御

    川西咲子, 渡邉遼, 柴田浩幸

    日本金属学会 2020年春期(第166回)講演大会　2020/09/08

  97. 鉄濃度の高いケイ酸塩スラグのガラス化

    助永壮平, Paolo Mai, 川西咲子, 柴田浩幸

    資源・素材学会 2020年度資源・素材関係学協会合同秋期大会　2020/09/08

  98. 高温冶金現象の直接観察・測定 Invited

    柴田浩幸

    東北大学材料科学ウェビナー2020　2020/09/07

  99. アルカリアルミノケイ酸塩ガラスの機械的性質に及ぼす化学組成の影響

    江部健太, 助永壮平, 俵義浩, 柴田浩幸

    日本セラミックス協会第33回秋季シンポジウム (オンライン)　2020/09/03

  100. 蛍光イメージングによるCaSiO3の水溶液への溶出挙動の可視化

    中山日菜子, 川西咲子, 川野潤, 柴田浩幸

    日本鉄鋼協会 第180回秋季講演大会　2020/09

  101. • ケイ酸塩ガラス中のFe3+イオン近傍の局所構造に及ぼす化学組成の影響

    助永壮平, 古賀拓郎, 篠田弘造, 柴田浩幸

    日本鉄鋼協会第179回春季講演大会　2020/03/19

  102. The Preferential Dissolution Behavior of Calcium into Water from the Calcium-Silicate Mineral Phases

    Fang RUAN, Sakiko Kawanishi, Sohei Sukenaga, Hiroyuki Shibata

    2020/03

  103. Evaluation of interface reaction between magnetite and matte by in-situ observation

    Seung Hwan Shin, Sakiko Kawanishi, Sohei Sukenaga, Makoto Ohtsuka, Junichi Takahashi, Hiroyuki Shibata

    2020/03

  104. Crystallization and leaching behaviors of silicate based materials International-presentation Invited

    SHIBATA Hiroyuki

    A Symposium on Smart Technology for Metallurgical Phenomena, KPU-Tohoku University　2019/12/27

  105. 高温融体の熱物性：酸化物と金属 Invited

    柴田 浩幸

    日本鉄鋼協会 生産技術部門 特殊鋼部会 第１４７回 特殊鋼部会　2019/11/28

  106. 静電浮遊炉におけるCr-Si融体の放射率および比熱の測定

    仲田結衣, 渡邊勇基, 小山千尋, 石川毅彦, 川西咲子, 柴田浩幸, 吉川健

    日本熱物性学会 第40回日本熱物性シンポジウム　2019/10/29

  107. 鉄ケイ酸塩スラグの還元過程における表面張力変化

    助永壮平, 川西咲子, 打越雅仁, 石原真吾, 夏井俊悟, 大野光一郎, 齊藤敬高, 中島邦彦, 柴田浩幸

    資源・素材学会 2019年度資源・素材関係学協会合秋期大会　2019/09/24

  108. Observation of Surface during Dissolution of Calcium-Silicate Mineral Phases into Water

    Fang RUAN, Sakiko Kawanishi, Sohei Sukenaga, Hiroyuki Shibata

    2019/09/13

  109. カルシウムシリケート系鉱物の水へのCa溶出挙動に及ぼす結晶構造の影響

    川西咲子, Ruan Fang, 柴田浩幸

    日本鉄鋼協会 第178回秋季講演大会　2019/09/13

  110. 濃度場のその場観察システムの開発と凝固現象の速度論評価

    塩沢優大, 川西咲子, 柴田浩幸

    日本金属学会 2019年秋期(第165回)講演大会　2019/09/11

  111. Cr-Si合金を用いたSiC溶液成長時の結晶中窒素濃度

    八野田将吾, 川西咲子, 柴田浩幸

    日本金属学会 2019年秋期(第165回)講演大会　2019/09/11

  112. Thermophysical properties of silicate melts and glasses International-presentation Invited

    SHIBATA Hiroyuki, SUKENAGA Sohei, NISHI Tsuyoshi, OHTA Hiromichi

    Slag Valorisation Symposium Science, Innovation & Entrepreneurship in Pursuit of a Sustainable World　2019/04/02

  113. SiC溶液成長時の溶液内熱流動に及ぼす各種物性値の影響

    川西咲子, 大黒寛典, 石川毅彦, 阿部舞, 柴田浩幸, 吉川健

    日本金属学会 2019年春期(第164回)講演大会　2019/03/21

  114. An approach for solubility measurement of SiC in molten silicon and its alloy by real-time interference observation International-presentation Invited

    Sakiko Kawanishi, Takeshi Yoshikawa, Didier Chaussende, Hiroyuki Shibata

    TMS2019 148th Annual Meeting and Exhibition　2019/03/12

  115. 金属基板上での酸化物液体の冷却過程における結晶化挙動

    助永壮平, 田代公則, 柴田浩幸

    第28回MRS-J年次大会　2018/12/19

  116. Crystallization behaviour of lithium disilicate liquids on metallic substrate International-presentation

    SHIBATA Hiroyuki

    International Symposium on "New Horizon in Advanced Materials" Kick off Symposium of Academic Exchange Program for TAIPEI TECH-IMRAM　2018/12/04

  117. Effect of thermal conductivity of solvent on solution growth of SiC International-presentation

    Mai Abe, Sakiko Kawanishi, Hiroyuki Shibata

    TAIPEI TECH-IMRAM Symposium　2018/12/03

  118. Al₂O₃-B₂O₃-CaO-Na₂O-SiO₂融体の熱伝導率にお けるTiO₂, ZnO, ZrO₂添加依存性

    大沼克也, 眞子巧巳, 大和佳史, 太田弘道, 西剛史, 柴田浩幸, 助永壮平

    第39回日本熱物性シンポジウム　2018/11/13

  119. アルカリアルミノケイ酸塩（R2O-SiO2AlO1.5,R=Li, Na）融体の粘度

    柴田 浩幸生駒諒太, 遠藤貴彦, 助永壮平, 柴田浩幸

    第39回日本熱物性シンポジウム　2018/11/13

  120. 溶融Fe-Si合金の熱伝導率の計測

    阿部舞, 川西咲子, 柴田浩幸

    第39回日本熱物性シンポジウム　2018/11/13

  121. Contact angle and undercooling of Iron alloy on single crystal oxide substrates under controlled oxygen partial pressure International-presentation Invited

    SHIBATA Hiroyuki

    The 32 KOREA refractory symposium　2018/11/03

  122. Effect of Silicate Structure of Calcium-Silicate Based Mineral Phases on Their Elution Behaviors International-presentation

    Fang Ruan, Sakiko Kawanishi, Sohei Sukenaga, Hiroyuki Shibata

    2018 China Symposium on Sustainable Steelmaking Technology　2018/10/26

  123. Wettability induced change in crystallization behavior of lithium disilicate liquids on metallic substrates International-presentation

    Sohei Sukenaga, Masanori Tashiro, Hiroyuki Shibata

    ICG 2018 Annual Meeting　2018/09/26

  124. Fluoride Layer-Like Structure in New Fluoroborate Glasses with Highly Efficient Photoluminescence International-presentation

    Kenji Shinozaki, Sohei Sukenaga, Hiroyuki Shibata, Tomoko Akai

    ICG 2018 Annual Meeting　2018/09/26

  125. 高温冶金プロセスのその場観察・測定 Invited

    柴田 浩幸

    日本鉄鋼協会 評価・分析・解析部会 特別講演会　2018/09/20

  126. ケイ酸塩系過冷却液体の粘度に及ぼす鉄イオン酸化状態の影響

    柴田 浩幸助永壮平, 脇原徹, 柴田浩幸, Daniel Neuville

    日本鉄鋼協会第176回秋季講演大会　2018/09/20

  127. Ca-Si系鉱物相の水へのカルシウム溶出挙動に及ぼすシリケート構造の影響

    阮方, 川西咲子, 助永壮平, 柴田浩幸

    日本鉄鋼協会, 第176回秋季講演大会　2018/09/19

  128. 溶媒移動法における物質移動現象を利用した1600-2000℃での諸物性値の評価

    川西咲子, 柴田浩幸, 吉川健

    日本金属学会 2018年秋季(第163回)講演大会　2018/09/19

  129. 白金基板上における 33Li2O-67SiO2 (mol%)過冷却液体の結晶化挙動の制御

    田代公則, 助永壮平, 柴田浩幸

    日本セラミックス協会第31回秋季シンポジウム　2018/09/06

  130. BaF2-Al2O3-B2O3ガラスのMDおよびRMCシミュレーションとCe添加による発光特性

    篠崎健二, 岡田豪, 助永壮平, 柴田浩幸, 尾原幸治, 正井博和, 河口範明, 柳田健之

    日本セラミックス協会第31回秋季シンポジウム　2018/09/06

  131. Melt properties of Si-40 mol% Cr solvent and their influence to temperature and flow control in the SiC solution growth

    S. Kawanishi, H. Daikoku, T. Ishikawa, M. Abe, H. Shibata, T. Yoshikawa

    2018/09/02

  132. Effect of Thermal Conductivity of Solvent on Heat Flow during Solution Growth of SiC International-presentation

    Mai Abe, Sakiko Kawanishi, Hiroyuki Shibata

    European Conference on Silicon Carbide and Related Materials 2018　2018/09/02

  133. 冶金プロセスに関わる高温その場測定・観察 Invited

    柴田 浩幸

    日本鉄鋼協会北海道支部湯川記念講演　2018/07/13

  134. Structural role of aluminum cation in alkaline-earth aluminosilicate glasses International-presentation

    Sohei Sukenaga, Koji Kanehashi, Kyung-Ho Kim, Hiroki Yamada, Toru Wakihara, Koji Ohara, Koji Inoue, Yasuyoshi Nagai, Hiroyuki Shibata

    15th International conference on the physics of non-crystalline solids & 14th European society of glass conference　2018/07/10

  135. Unique ordering of Ba site in MgF2-rich fluoroborate glasses and their highly efficient photoluminescence International-presentation

    Kenji Shinozaki, Sohei Sukenaga, Hiroyuki Shibata, Koji Ohara, Tomoko Akai

    15th International conference on the physics of non-crystalline solids & 14th European society of glass conference　2018/07/10

  136. Wettability-induced change in crystallization behavior of supercooled liquids composed of Li2O-SiO2 International-presentation

    Sohei Sukenaga, Masanori Tashiro, Hiroyuki Shibata

    CIMTEC2018　2018/06/08

  137. 高温冶金プロセスに関わる高温その場観察・測定ー凝固、介在物、伝熱ー Invited

    柴田 浩幸

    日本鉄鋼協会 一貫製造プロセス造り込みによる実用構造鋼の極限特性追及技術検討部会　2018/05/18

  138. R2O-SiO2-AlO1.5(R=LiorNa)系ガラスの熱伝導度

    助永壮平, 遠藤貴彦, 脇原徹, 尾原幸治, 太田弘道, 柴田浩幸

    日本鉄鋼協会第175回春季講演大会　2018/03/20

  139. 6H-SiC中のらせん転位より生じるスパイラル構造上への3C-SiC核生成制御

    渡邊遼, 川西咲子, 柴田浩幸

    日本金属学会, 第162回 2018年春季講演大会　2018/03/19

  140. SiC溶液成長時の熱流動に及ぼす溶媒の熱伝導率の影響

    阿部舞, 川西咲子, 柴田浩幸

    日本鉄鋼協会, 第175回秋季講演大会　2018/03/19

  141. 1873-2273Kでの溶融Cr-Si-CおよびFe-Si-C合金の相互拡散係数

    川西咲子, 柴田浩幸, 吉川健

    第65回日本応用物理学会春季学術講演会　2018/03/17

  142. Cr-Si溶媒を用いたSiCの溶液成長挙動に及ぼす炭素過飽和度の影響

    永松洋一郎, 川西咲子, 柴田浩幸, 吉川健

    第65回日本応用物理学会春季学術講演会　2018/03/17

  143. R2O-SiO2-AlO1.5 (R=Li or Na)系ガラスの密度、比熱、熱伝導度

    助永壮平, 遠藤貴彦, 柴田浩幸, 山田大貴, 脇原徹, 尾原幸治, 西剛史, 太田弘道

    日本セラミックス協会2018年年会　2018/03/17

  144. Observations of Ferrite Formation and Growth in Inclusion-engineered Low Alloy Steels during In-situ Heat Treatments International-presentation

    Wangzhong Mu, Peter Hedström, Hiroyuki Shibata, Pär Jönsson, Keiji Nakajima

    TMS2018　2018/03/15

  145. Ca-Si系鉱物相の水への溶出度とシリケート骨格構造の関係

    Ruan Fang, 柴田浩幸, 川西咲子, 助永壮平

    日本鉄鋼協会第180回秋季講演大会 (オンライン)　2020/09/18

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Industrial Property Rights 3

  1. マグネシウム還元炉

    小濱 泰昭, 柴田 浩幸

    特許第6636737号

    Property Type: Patent

  2. マグネシウム燃料発電装置

    小濱 泰昭, 柴田 浩幸

    特許第6636718号

    Property Type: Patent

  3. 空気電池システム

    阿部 勲, 平 芳延, 齊藤 隆, 小濱 泰昭, 柴田 浩幸

    特許第6463999号

    Property Type: Patent

Research Projects 32

  1. Elucidation of quenching solidification phenomena by fluorescence imaging

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2022/04/01 - 2025/03/31

  2. Deepening of hydration chemistry of silicates by in-situ analysis under wet conditions

    Shibata Hiroyuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2019/04/01 - 2022/03/31

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    This research was performed with the aim of elucidating the elution mechanism of the constituent elements of silicate substances. Elution tests were conducted on a total of 15 types of samples in the CaO-SiO2 binary system and the ternary system in which MgO, FeO, CaF2 or Al2O3 was added to the binary system, and the samples were analyzed by various spectroscopic analyses. As a result, it was found that the silicate skeleton structure and network structure have a great influence on the Ca elution, which leads to an increase in pH. It was also clarified that the rate-determining step of Ca elution is the diffusion of Ca ions in the Ca-depleted layer near the surface. As described above, the elution behavior of the silicate substance into water was elucidated, and the effectiveness of the addition of the third component for suppressing the elution was shown.

  3. Structural segmentation of oxide non-crystalline materials and understanding of their physical properties

    Shibata Hiroyuki, KIM Kyung-Ho

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2016/04/01 - 2019/03/31

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    Physical properties (viscosity, thermal conductivity) of silicate liquids and their glasses are important to control the high temperature processes (e.g., glass making and pyrometallurgy). However, it is still difficult to understand the mechanism of property change with a variation in chemical composition because of their multicomponent system. In the present project, viscosity and thermal conductivity of multicomponent aluminosilicate melts and glasses were evaluated. Also, the local structure in the neighborhood of cations in network region and their breakage region were analyzed spectroscopically. It is found that the physical properties should be influenced by coordination number of silicon and aluminum cations in the network structure.

  4. Local structure and properties in multicomponent molten salts

    Waseda Yoshio

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2016/04/01 - 2019/03/31

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    The purpose of this study was to obtain fundamental knowledge leading to the establishment of the technique of refractory metals recovery from molten salt with electroplating by comparing the local structure in the molten state with the results of the electrolytic recovery experiment. The relationship between the molten salt composition and the melting temperature and the local structure was investigated and clarified based on the data obtained by the in-situ measurement in the high temperature molten state mainly applying X-ray absorption spectroscopy. It has been found that, by using a molten salt of mixed halide composition in which a part of the low melting point fluoride is substituted with chloride, a large structure is decomposed and metal can be recovered even under relatively low temperature conditions.

  5. 多成分系酸化物の非平衡状態を活用する凝固プロセス制御

    田代 公則, 柴田 浩幸, 助永 壮平

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究

    Category: 奨励研究

    Institution: 東北大学

    2019 - 2019

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    三元系CaO-Na_2O-SiO_2の代表的組成であるNa_2O-2CaO-3SiO_2(NC2S3)と2Na_2O-CaO-3SiO_2(N2CS3)ガラスを作成し、白金基板上での過冷却液体からの凝固過程の直接観察を行った。両組成ともに、近年のNMR測定よりSiO_4四面体周囲のケイ素イオンの数に分布があり、安定相と準安定相が晶出することが予想されたが、安定相のみ結晶化した。また、最大過冷度はN2CS3で100K程度だったが、NC2S3では320Kと大きく過冷した。

  6. The application of steelmaking slag as agricultural material through the control of composition and structure

    GAO XU, KITAMURA SHIN-YA, ITO TOYOAKI, SHIBATA HIROYUKI

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Tohoku University

    2016/04/01 - 2018/03/31

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    Nowadays, the decrease in soil pH, lack of silicate and free iron ion in soil solution are occurring in the paddy fields of Japan. Therefore, the steelmaking slag, a by-product from steelmaking process, has been expected as a costless solution. Both Ca and Si can be easily dissolved from steelmaking slag, however, the water-soluble amount of Fe is not enough even though the content of iron oxides in slag are high. To improve the water solubility of Fe, the use of a glassy phase majorly consists of CaO-SiO2-FeOx has been proposed in this study. The relation among the water solubility of glassy phase, chemical composition, and structure has been studied. In addition, through the control of chemical composition and cooling method, a slag which can simultaneously supply Ca, Si, and Fe with large amounts has been successfully synthesized, and this indicate it is possible to achieve a new type of fertilizer made of steelmaking slag which can easily supply Ca, Si, and Fe into paddy fields.

  7. Characterization of role of constituent ions in complicated solid electrolytes by combination of element-selective structural analysis methods

    Waseda Yoshio

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2014/04/01 - 2017/03/31

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    The element-selective structural analysis methods were used to characterize the local structures in several phosphate compounds with the NASICON-type structure. They are promising materials for lithium ion batteries, as they reveal superior charge-discharge characteristics. The chemical state in Li2NaV2（PO4)3 samples of a candidate cathode during the charge-discharge was analyzed by using X-ray absorption spectroscopy. X-ray anomalous scattering was used to analyze the middle-range order structure in NASICON-type glass-ceramics, which are utilized as electrolytes in solid state batteries. Influences of foreign elements on the local structure around aluminum and phosphorus in these samples were also analyzed by NMR. These results were discussed coupled with their electrochemical properties.

  8. Middle-range order structure of multi-component Li ion conducting oxides

    WASEDA Yoshio, SHIBATA Hiroyuki, SHINODA Kozo, FUJIEDA Shun

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2012/04/01 - 2015/03/31

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    The local structure around germanium of LiGe2(PO4)3 with the glass and the natrium super ionic conductor (NASICON)-type glass ceramic was investigated. While the X-ray absorption near edge structure spectra at the Ge K absorption edge of the glass ceramic indicated a distinct peak with a shoulder at higher energy sides, the glass exhibited a broad spectra. In the radial structure function obtained by Fourier transform of the extended X-ray absorption fine structure oscillation, the Ge-O correlation peak of the glass was observed at the shorter distance in comparison with that of the glass ceramic. These results suggest that the local structure around germanium in the glass is different from that of the glass ceramic composed of the GeO6 octahedral units.

  9. Relationship between thermal conductivity and network structure of molten silicates

    SHIBATA HIROYUKI, WASEDA Yoshio, OHTA Hiromichi, SUKENAGA Souhei

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2011/04/01 - 2014/03/31

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    The effect of addition of K2O, Na2O, CaF2 and Al2O3 on thermal conductivity of molten silicate was investigated by using the front heating-front detection laser flash method. The thermal conductivities of molten silicates showed insignificant temperature dependence in liquid region. The measured thermal conductivity values decreases with increasing value of NBO/T(Non-bridging Oxygen ions/Tetrahedrally coordinated cation). The network structure of silicate melts was modeled in three dimensions to estimate the effect of decoupling behavior of silicate melts on thermal conduction through silicate network chains.The effect of amount of non-bridging oxygen on thermal conductivity of the 3D model of silicate melts was obtained.The obtained values of thermal conductivity gradually decreased with increasing NBO/T. This tendency agrees with that for the measured thermal conductivity.

  10. Development of recycling process of alloying elements for steel

    KITAMURA Shin-ya, SHIBATA Hiroyuki, MARUOKA Nobuhiro, YAMAGUCHI Katsunori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2009 - 2011

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    The equilibrium distribution of Mn and Fe between Fe-Mn-Ca-S-O system and FeO-MnO-CaO-SiO2-MgO-P2O5 slag was determined under the controlled partial pressure of oxygen and sulfur at 1673K. It was found that phousphorus was not distributed to the matte in equilibrium with the molten slag. The effects of slag compositions, temperature, and oxygen and sulfur potential in gas phase on the distribution behavior of manganese and iron between the matte and slag were experimentally examined. It was also found dissolution behavior of (C2S-C3P)ss in water depended on the C3P ratio and mineral phase in sample. From these results, fundamental technique has been established to obtain manganese through sulfurization of the steelmaking slags.

  11. 熱物性顕微鏡によるAlGaN薄膜の熱物性評価とその組成依存性

    早稲田 嘉夫, 柴田 浩幸, 太田 弘道

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 挑戦的萌芽研究

    Category: 挑戦的萌芽研究

    Institution: 東北大学

    2008 - 2009

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    平成20年度に茨城大学に設置の熱物性顕微鏡に実施した改良に基づき、AlGaN薄膜の熱浸透率の高精度測定に平成21年度も取り組んだ。平成20年度に実施した測定では、測定した熱浸透率の値にAlNの濃度差によるに差異が認められ、AlNのモル分率の増大に伴い減少する傾向が見られた。しかし、一部の測定では同じ試料の測定でも測定によっては測定結果に違いが見られていた。これはAlGaN薄膜の表面状態が平滑な面と平滑で無い面があり、この影響があったためと考えられた。そこで、今年度の測定では表面状態の良い場所のみを測定するとともに、偶然誤差の影響を小さくするために、測定箇所1箇所に付き50回の測定を実施し算術平均した値を5回もとめた。このように測定回数を増やし、試料の表面状態の良い場所を適切に選ぶことによって、バラツキの少ないデータを得ることができた。さらに、熱物性顕微鏡で測定した熱浸透等率から、AlN、GaNのモル分率および文献値の密度および比熱のデータを組み合わせて熱伝導率を求めることができた。AlGaN薄膜の算出された熱伝導率を従来のAlGaN薄膜の測定データと比較した。従来データのAlNの組成範囲はAlNの少ない側に限られていたが、それらより広い範囲で、AlNの高濃度側の測定データを得ることができた。また、得られた熱伝導率は従来データの延長上にあることがわかった。さらに、測定データはバーチャルクリスタルモデルにより推定されたAlGaNの組成依存性を良く再現していることが判明した。以上のように熱物性顕微鏡の改良と試料の測定する表面を適切に管理することによって、良い精度薄膜の熱伝導率の評価が可能になった。

  12. Dynamic analysis of breaking mechanism of silicate network in slag melts by fluorine

    OHTA Hiromichi, SHIBATA Hiroyuki, WASEDA Yoshio, HOSHINO Yasuhiro, KASAMOTO Takeshi, AKAIDA Yuuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Ibaraki University

    2007 - 2008

  13. 金属ガラスのガラス・結晶・溶融状態における熱物性

    柴田 浩幸, 太田 弘道

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 特定領域研究

    Category: 特定領域研究

    Institution: 東北大学

    2006 - 2007

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    Zr基金属ガラスのZr-TM-AlのTMをCu,Co,Niにした幅広い組成領域において、室温における熱拡散率の測定をレーザーフラッシュ法により行った。Zr_<(90-X)>Cu_XAl_<10>では、Cu濃度が上がるに従い、わずかに熱拡散率が減少する傾向が認められた。また、この金属ガラスの熱拡散率の値は2〜3×10^<-6>m^2/sであり、合金を構成する各元素の値(Zr:12.7×10^<-6>m^2/s、Cu:117×10^<-6>m^2/s、Al:100×10^<-6>m^2/s)に較べ非常に小さくなっている。Zr-Co-AlおよびZr-Ni-Alについても同様の測定を実施し、ほぼ同じ測定値が得られた。比熱の測定を示差走査熱量計を用いてエンタルピー法により行った。密度の測定も室温において、アルキメデス法により行った。これらの測定値から熱伝導率を算出した。また、電気抵抗率の測定も四端子法方によりそれぞれの合金について実施した。温度依存性については、まだ完全に測定はできていないが金属ガラスの鋳造シミュレーションに必要な基本的なデータの収集を行うことができた。金属ガラスの形成可能な大きさを推算するために、収集した熱物性値データに基づき伝熱解析を行った。銅鋳型を用いて円柱状の金属ガラスを作製する場合の金属ガラスの内部の温度変化を数値計算により求めた。円柱の金属ガラスの表面と試料中心部の冷却速度には鋳造直後に差があること、試料の直径を大きくすると冷却速度が小さくなることを定量的に評価することができた。このように金属ガラスの内部の伝熱解析が可能になったことから、金属ガラスが作製可能な臨界直径あるいは臨界冷却速度の推算が可能になると考えられる。

  14. Characterization and Control of Clustering of Different Foreign Elements in Environmentally Friendly Copper-based Alloys

    SUZUKI Shigeru, SHIBATA Hiroyuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2005 - 2006

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    The optimum composition and processing for preparing environmentally friendly copper based alloys, which are not contain toxic beryllium but reveal high performance in the strength and conductivity, were investigated. In order to reduce impurity elements, copper-titanium and copper-nickel-silicon alloys showing aging characteristics were prepared from high purity materials. The hardness and electrical resistivity of different alloys were systematically measured during isochronal annealing. The results showed that precipitation took place in the temperature range between 600K and 750K in these alloys. Small angle X-ray scattering (SAXS) and other techniques were used for characterizing clustering of alloying elements in the alloys, which were annealed at 720K isothermally. The results showed that the hardness increased and the resistivity decreased (that is an increase of the conductivity), when the effective radius estimated in the distance distribution function was from 2 nm to 3 nm. However, the samples were aged for more long time, the hardness of the alloys decreased again, indicating overaging. Thus, there is the optimum distribution of clustering of alloying elements for obtaining the high properties. In addition, anomalous small angle X-ray scattering (ASAXS) was utilized for characterizing the clustering of nickel in Cu-Ni-Si alloys. The results revealed that nickel were precipitated in a size of ca. 2-3 nm. X-ray absorption spectroscopy was also utilized for analyzing the local structure of nickel in Cu-Ni-Si alloys. The EXAFS and XANES spectra showed that the local structure and electric state of nickel precipitated were different from that in those fcc alloy matrix

  15. In-situ observation of effect of tramp element on peritectic reaction and transformation of iron based alloy

    SHIBATA Hiroyuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: TOHOKU University

    2004 - 2005

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    The mixture of pure iron and copper was melted to produce an ingot of the alloys with an arc melting furnace. The rectangular shape sample was machined from the cast ingot. The rectangular shape sample was contained in alumina crucible and heated under high purity argon atmosphere by using an infrared image furnace. The changes of the sample were observed with a confocal scanning microscope at elevated temperatures. The rectangular crucible plays an important role in order to have the sample unidirectionally solidify. The characteristics of liquid-> delta ferrite and delta ferrite -->gamma austenite transformation in Fe-Cu and Fe-Ni alloys and of the peritectic solidification of those alloys, have been dynamically observed in situ with a confocal scanning laser microscope combined with an infrared image furnace. The unique sequence, morphologies, and rates of these transformations have been determined under a temperature gradient, in unidirectional solidification experiments. The δ phase undergoes a peritectic reaction, with the lateral growth of γ along the L/δ boundary, and transforms into cellular γ very rapidly, far in excess of diffusion-controlled rate, indicating that the transformation is a massive one. The growth rate of the γ phase is faster toward metastable δ than toward liquid. The temperatures of the phase transformations of the alloys were also measured by using a differential scanning calorimeter. The measured temperatures were compared with the observed phenomena of the alloys. Then, the observed temperatures were also tested, and the discussion would be possible under accurate temperature conditions. These observations have been discussed in terms of the constitutional undercooling description of solidification theory.

  16. Thermal properties and glass-forming ability of bulk glassy alloys

    WASEDA Yoshio, SUZUKI Shigeru, SHIBATA Hiroyuki, OHTA Hiromichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: TOHOKU UNIVERSITY

    2003 - 2004

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    Pd-based and Zr-based glassy alloys are well known to exhibit glass transition with a wide supercooled liquid region. These bulk amorphous alloys allow us to investigate thermal properties and electrical resistivity of these alloys. The main purpose of this work is to discuss the glass-forming ability of these alloys on the basis of the obtained values. The thermal diffusivity values of the alloys were measured with a laser flash technique. The electrical resistivity was measured by a direct current four probe technique. The specific heat was measured by the heat flux type differential scanning calorimeter with a triple cell system. The thermal diffusivity values of the alloys in the liquid state are summarized in the linear equations with positive temperature dependency. The lower the thermal diffusivity values of the alloys at liquidus temperature, the lower the critical cooling rate to obtain amorphous alloy becomes. Thus, the thermal diffusivity values of alloy liquids might be an indicator of their glass forming ability. The thermal diffusivity values of Zr_<55>Al_<10>Ni_5Cu_<30> alloy show positive temperature dependence in the glassy state. The thermal diffusivity values of the alloy increase suddenly at crystallization temperature (Tc). The thermal diffusivity values increase gradually showing three stages in the crystallization temperature range with increasing temperature. The electrical resistivity values suddenly decrease at Tc and gradually decrease showing same tendency of the thermal diffusivity values. The specific value of Zr_<55>Al_<10>Ni_5Cu_<30> in the glass state was measured to be 0.372 Jg^<-1>K^<-1>. The specific heat values for liquid Pd-based alloys were also obtained. These values show small negative temperature dependence. It was also suggested from analysis with Wiedemann Franz law that principal mechanism of Pd-based alloy is likely to be controlled by electron in the super cooled liquid and liquid states.

  17. 新原理に基づくレーザーフラッシュ法による金属・半導体融体の熱拡散率測定

    柴田 浩幸

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 若手研究(B)

    Category: 若手研究(B)

    Institution: 東北大学

    2001 - 2002

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    開発した試料セルを用いて、レーザフラッシュ法により純金属(鉄、コバルト、ニッケル)融体の熱拡散率測定を測定した。また、半導体ではゲルマニウム融体の熱拡散率を測定することができた。本研究で開発した試料セルでは、容器と融体試料の接触を避けることができず、試料容器への熱の逃げの測定値への影響を定量的に評価することが重要である。この問題を解決するために、容器/融体試料/容器の三層からなる数値モデルを開発した。このモデルでは各層の間の界面熱抵抗を考慮するとともに、融体試料の表面からの放射伝熱による熱損を考慮して数値計算により、各因子の測定に与える影響の評価を行った。数値計算の結果から、本測定法では融体試料と容器の間の界面熱抵抗は無限大とみなしてよく、高温における放射伝熱よる熱損失のみを考慮すれば、精度の高い熱拡散率の値を得られることが明らかとなった。測定した熱拡散率の値はいずれの場合も正の温度依存性を示した。金属融体の熱拡散率の値は、融点近傍の固体状態のときの熱拡散率の値に比べて、いずれの場合も小さい値となった。また、各融体の密度、比熱の文献値から熱伝導率も算出した。ここで得られた各金属融体の熱伝導率と電気伝導率の文献値による実験式から、Wiedemann-Franz則におけるLorenz数L_Tの算出も行った得られたLorenz数の値は理論値に近い値を示した。このことは、これらの融体の熱エネルギーの移動は主に伝導電子によって担われていることを示唆している。

  18. Study on high density and monochromatic atomic beam by ultra-high speed frequency modulation laser

    SATO Shunichi, SHIBATA Hiroyuki, NAKAMURA Koichiro, ITO Hiromasa

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: TOHOKU UNIVERSITY

    2000 - 2002

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    In general, atomic beam is generated by eruption of a small part of thermally generated gas from a small aperture. However, this method has a drawback that the velocity distribution is broad because the atomic source is in thermal equilibrium. Thus, this feature of the thermal atomic beam is a problem when used as a functional beam such as a probe of material surface and an energetic beam source. The purpose of this project is to realize a monochromatic atomic beam by using a high-speed modulation semiconductor laser. Conventional lasers have many narrow spectra called transverse mode, which are not a single broad spectrum required for atomic motion control by the laser light. Therefore, we developed an ultra-high speed frequency modulation semiconductor laser, of which the oscillation frequency varies faster than the reciprocal of the natural lifetime of the atom. High frequency current modulation and frequency-shifted feedback techniques are applied and compared. These laser sources were applied to control the atomic velocity by irradiating to an atomic beam. The atomic velocity distribution was obtained by plotting luminescence intensity from the atoms sweeping the frequency of an another single mode laser. It was verified that the velocity distribution of the thermal atomic beam changes by the laser irradiation. By changing the center frequency and the spectral width of the ultra-high speed frequency modulation laser, the velocity distribution, the distribution change followed the change of the laser parameter. In other words, the velocity of the atoms which Doppler shift corresponds to the laser frequency decreased. As a result, a high density and monochromatic atomic source was achieved.

  19. Nitride Metallurgy: Thermodynamics of Nitrides and Development of New Synthesis Methods

    WASEDA Yoshio, SHIBATA Hiroyuki, YAMANE Hisanori, SUIZUKI Shigeru, H.OKABE Toru

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2000 - 2002

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    As part of a systematic study on the thermodynamic properties of complex nitrides, phase equilibria of the system Li-M-N (M=Mg, Al, Ga) at 900 K were investigated. An attempt to determine the thermodynamic properties of complex nitrides was made by using the galvanic cell method, which utilizes LiMgN as an electrolyte under nitrogen atmosphere. The electromotive force (Emf) of the cell at temperatures between 800 and 1100 K was measured. While the Emf of the cell at 900 K was measured to be 0.137 V, data discrepancies of ±0.03V were found. It was difficult to determine temperature dependence of the Emf. The Gibbs energy change for the reaction, 1/3 Li_3N(s)+1/3Mg_3N_2(s)=LiMgN (s), at 900 K was determined to be △G^o_r (LiMgN) = -13.2 (±2.9) kJ/mol. Using thermodynamic information on the binary nitride from literature, the standard Gibbs energy of LiMgN was derived to be ΔG^o_f (LiMgN) = -121 kJ at 900 K. The thermodynamic stability range of nitride was discussed by constructing isothermal chemical potential diagrams that provide a better understanding of the stability region of the LiMgN phase. The diagram was found to be in good agreement with the isothermal phase diagram determined by the alloy equilibration method. Although the obtained data includes large uncertainties, the results provide a better understanding of the thermodynamic stability of nitrides. The potential application of this complex nitride to nitrogen chemical sensors or a medium for controlling nitrogen potential is also shown.

  20. Development of method for measuring three dimensional thermal properties of Si/NiFe/AIN thin film using a angle femtosecond thermoreflectance technique

    WASEDA Yoshio, SHIBATA Hiroyuki, SATO Shunichi, OHTA Hiromichi, HATORI Akihito

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2000 - 2001

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    The purpose of this study is to develop a noncontact and nondestructive method for measuring thermal diffusivity perpendicular to the thin film surface, which requires obtaining temperature response with sufficiently higher time-resolution by using a femtosecond thermoreflectance technique. We have developed the instrument that is able to measure temperature response in the range from several tens of ps to several hundreds of ps by the thermoreflectance technique with a femtosecond pulse laser. The validity of the instrument and the principle of the measurement have been confirmed through measurements of Al and Mo bulk samples. In this study, thermoreflectance signal, which is sufficient to analyze the thermal diffusivity perpendicular to the thin film surface without any influence from substrate, is obtained by both improvement and optimization of the optical and the detection system. The thermal diffusivity value is determined by a least square method fitting the observed thermoreflectance signal with a temperature variation formulae derived from a single layer model excluding effects of the substrate. This technique is also applied to bulk samples and the results are compared with those of thin films. Since the measurement in shorter time regime is possible due to the higher time-resolution, we are allowed to discuss behavior of electron and phonon in the substance just after the pulse laser heating. Existence of natural oxide layer on the sample surface is confirmed by XPS measurement. Measurement of optical constants and structure analyzes of the sample surface are performed by spectroscopic ellipsometry. The influence of the natural oxide layer on the thermal transport, phenomenon has also been given. It is found that rapid energy transportation within 100ps after the pulse heating is obtained with sufficient time-resolution and a signal-to-noise ratio giving the thermal diffusivity value of κ = 1. 5 x 10^<-5> m^2 s^<-1>. The thermal diffusivity of Mo bulk was obtained to be κ = 2.1 x 10^<-5>m^2s^<-1>. Thus, the difference of the thermal diffusivities of Mo between film and bulk appears to be small. However, these values differ from a reference value of κ = 5.43 x 10^<-5>m^2 s^<-1> given in the literature for the Mo bulk. The reason of this difference may be due to ballistic electron scattering and an electron-phonon energy transportation accompanying a finite time lag, which are likely detected in our measurements within picosecond time regime after the femtosecond pulse heating. An elastic wave generated on the sample surface by pulse heating may also affect the thermal diffusivity.

  21. Study on impurity separation by laser cooling

    SATO Shunichi, SHIBATA Hiroyuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: TOHOKU UNIVERSITY

    1998 - 1999

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    It is expected to obtain a high density atomic ensamble with almost zero velocity by decelerating atomic momentum accompanied with an absorption and emission cycle of a photon based on a laser cooling technique. This technique inherently has a potential to spatially control the atomic ensamble, which is resonant to specific laser frequency from the view point of motion control of an atomic beam by a kinetic action of light. This is attractive as a basic idea of a novel impurity separation method. In this research, we will intend to show the possibility of the impurity separation concept based on the laser cooling technique as one of novel material refining methods. The purposes of this research are development of high quality light source by using a high power laser diode, its application to practical laser cooling technique and control of the atomic velocity distribution. In this research, we developed an high power single frequency diode laser system which frequency can be controlled precisely by an electronic inputs. Additional light source is also prepared to pump the atoms that are expelled from an absorption and emission cycle used for the laser cooling. It was observed that the atomic velocity changed by the same frequency as the laser frequency sweep by measurement of the atomic velocity distribution. We discussed the relationship between the laser frequency sweep, and the cooling distance and the temperature. Moreover, we discussed the prospects of practical impurity separation.

  22. スーパーメタルの創製のための凝固・冷却時の高温析出相の“In−situ”観察制御

    江見 俊彦, 柴田 浩幸, 鈴木 幹雄

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 基盤研究(A)

    Category: 基盤研究(A)

    Institution: 東北大学

    1997 - 1998

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    Fe-42%Ni合金と鋼を溶融状態から凝固、冷却した時の析出相を共焦点走査型レーザー顕微鏡でその場観察を行い以下の結果を得た。 1.Fe-42%Ni合金はシャドウマスク材料等に用いられ、打ち抜き特性を向上することが重要であり、この特性の向上には高温で析出するMnSが重要な役割を担っている。溶体化処理後冷却過程でのMnS相の析出温度を直接観察から測定し、MnとSのFe-42%Ni合金中での溶解度積を温度関数として求めた。求めた溶解度積は従来鋼で報告されている溶解度積と近かった。析出後のMnS相の成長過程をその場観察するとともに、急冷した試料の分析から析出したMnSはアルミナを核として成長していることがわかった。これらはFe-Ni合金の打ち抜き特性の向上に必要なMnS相の析出現象の基礎データを提供した成果である。 2.Mn系硫化物の鋼の固相中での析出・成長挙動を明らかにすることは、鋼の機械的性質の向上に重要である。鋼中においても上記と同様の観察を行った。析出温度は文献値に比べて、125K低かった。これは析出物がFeを固溶した(Mn、Fe)Sであるため純粋なMnSの値とは異なったと考えられる。析出物の成長速度は非常に速く、析出物の粒径は時間の約1/3乗に比例して大きくなった。このことから、析出物はオストワルド成長と同じ機構で成長したと考えられる。オストワルド成長を考慮した析出物の成長モデルで、臨界核半径を0.5nmとした場合の成長速度は観察結果と良く一致した。

  23. 高速連鋳−直送圧延時の鋳片表面割れ発生臨界条件の定量化と防止法の開発

    鈴木 幹雄, 柴田 浩幸, 江見 俊彦

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 基盤研究(C)

    Category: 基盤研究(C)

    Institution: 東北大学

    1997 - 1998

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    鉄鋼製造プロセスにおける省エネルギー、資源リサイクル技術の一つが鋳造-圧延直結化プロセスである。この技術の安定化のためには連続鋳造鋳片の表面割れの防止が不可欠である。本研究の目的は、表面割れ発生時の限界歪みの測定方法の開発である。温度傾斜場引張試験機を用いて、角棒状試験片(10mm幅×20mm厚×140mm長さ)の厚さ方向に温度勾配を付け[加熱面を延性温度(1100℃)、冷却面を脆性温度(700-950℃)]、10^<-4>/sの歪み速度で引張り加工を行った。冷却面に8mm間隔(標点間距離)で2本の線を刻印し、5秒毎にデジタルカメラで撮影し、画像上で標点間距離を測定して、引張り試験中の変位と歪みを求めた。また、割れ発生時の歪みの決定のため、5秒毎の歪み増分を引張り時間でプロットすると、ある時間tcを境にして歪み増分が急増することが分かった。tcの前後で試験を停止し、試験片の冷却面側に割れが有るかどうかを調べた。tcより前では割れは無く、後では割れが認められた。従って、tcを求めることにより割れ発生時の歪みを求めることができる。この方法を用いて、中炭素包晶鋼(炭素濃度0.1-0.16mass%)の連鋳スラブの表層部から切り出した試験片を使って横割れ発生時の限界歪みを測定した。試験片にはオッシレーションマークを模してV状のノッチを付けた。得られた結果を次に示す。 (1)実験に用いた3種類の中炭素包晶鋼の熱間延性は800℃で最小を示し、Nbを含有すると脆化温度が高温側に拡大する。脆化温度は700〜950℃の範囲である。 (2)ノッチの無い場合の限界歪みは35%であるが、0.3mm深さのノッチの場合の限界歪みは15%まで急激に低下する。ノッチ深さが増して1.5mm深さになると約10%まで低下する。V字状と半円状ノッチを付けて限界歪みに及ぼす形状の影響を調べたが、形状の影響は認められなかった。

  24. In-situ Observation of Engulfment and Pushing of Small Particl in Molten Metal by Advancing Melt/Solid Interface

    SHIBATA Hiroyuki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: TOHOKU UNIVERSITY

    1997 - 1998

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    Engulfment or pushing of inclusion particle by advancing melt/solid interface of steel has been investigated in-situ with a confocal scanning laser microscope. When the velocity of advancing interface exceeds a critical value for a particle, solid alumina cluster particle or liquidsilicate/aluminate globular particle in steel melt is found engulfed by the interface which extends in a convex way to form a bump toward the particle. At lower velocities or for smaller radii, the particles in both classes are pushed by the interface which does not form the bump. The shape of the bump is reasonably reproduced by a two-dimensional FEM analysis of heat transfer from the melt across the particle to the interface. Reduced heat transfer caused by the intervening particle is considered responsible for the engulfment. We also show that. the smaller alumina inclusions are not entrapped in the dendritic solid during solidification, based on estimates of the interdendritic solidification rates and empirical data on the engulfment of alumina inclusions by solidifying steel. Engulfment by the interdendritic liquid however is enhanced by the gradients of the concentrations of oxygen and sulfur in the interdendritic liquid during solidification. These elements are surface active on the liquid-steel/alumina interface and m turn introduce very strong capillary forces on the interdendritic alumina inclusions. Phase transformation of delta-ferrite/gamma-austenite in low carbon steels was observed. Dihedral angles at triple points of one high energy delta/delta grain boundary and two incoherent delta/gamma interphase boundaries were measured. From the average value of observed dihedral angles, free energy of gamma/delta incoherent. boundary for a steel with low sulfur content on the dihedral angle and free energy of incoherent, d/g boundary were discussed. At. the same time. the dendritic growth of gamma-phase was observed and analyzed by the constitutional supercooling and instability theories. which show good agreement between the observations and theories.

  25. Development of nano-structure fabrication by laser manipulation

    SUZUKI Mikio, SHIBATA Hiroyuki, EMI Toshihiko

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    1995 - 1997

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    Manipulation of small particles by using the laser beam is attracting considerable attention as a novel attempt constructing small objects. Under these circumstances, this study have aimed at establishing new concept and basic technology of nano-structure fabrication using the optical trapping technique for micro or nanometer scale objects. First of all, a technique was developed to arrange plural monodisperse hematite particles that were simultaneously trapped. It was observed that the particles were arranged in line without opening by a linearly focused laser beam. This arrangement was stable and can be freely moved. Although these small particles are known to cohere naturally, it was demonstrated that special arrangement that is difficult by electrostatic and/or van der Waals force is achieved by the optical trapping. Secondary, forces between two particles that were optically trapped independently by using two laser beams. The result showed good agreement with DLVO theory. The arrangement technique of small particles established in this study is achieved by an active method of the optical trapping. It is thought that this technique is useful to fabricate small objects. It was also demonstrated that the naturally acting force between two particles is well explained by the DLVO theory. We believe that our results may be very useful for the fabrication of nanometer scale objects in the future.

  26. 新素材の光学評価のためのコヒーレント検出法の研究

    佐藤 俊一, 柴田 浩幸

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 基盤研究(C)

    Category: 基盤研究(C)

    Institution: 東北大学

    1996 - 1996

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    本研究は、不透明で散乱の強い場合のニューセラミックスや超高純度半導体などの新素材に適用して、その光学的情報を抽出するための基礎的な研究を行うことを第一の目的とした。さらに、本方法が本質的に持っている、2次元画像情報(分布測定)の検出も試み、その後測定点を空間的に移動して2次元的な散乱光強度情報を抽出した。 まず、ヘテロダイン検出法に基づき、光周波数シフタによって僅かな周波数変移を与えられたコヒーレントなHe-Neレーザー光を用いて、散乱体からの散乱光を高感度に検出するシステムを確立し、さらに2次元的な試料内部の吸収等の分布計測を試みた。具体的にはマッハツェンダー型の干渉計の中に測定試料を配置し、その測方散乱光成分を光りヘテロダイン検出した。この信号は非常に弱いため、SN比が極めて小さく測定のダイナミックスレンジも小さくなった。そこで、平衡検出法を用いてダイナミックレンジを大幅に広げることができた。試料として、プラスチック消しゴムと、レーザー用のルビー結晶を用いた。その結果、初めて測方散乱光を光ヘテロダイン検出することに成功した。また、試料を2次元的に走査することにより、散乱光強度の2次元分布を捉えることに成功した。CCDカメラを用いた場合には表面からの散乱光が捉えられるのに対して、本方法では明らかに測方散乱光成分のみが測定されていることが認められ、新素材評価のための新しい方法としての有効性が確認された。

  27. 高融点金属の凝固過程の直後観察

    柴田 浩幸, 江見 俊彦, 鈴木 幹雄

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 基盤研究(C)

    Category: 基盤研究(C)

    Institution: 東北大学

    1996 - 1996

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    本研究では試料中の温度勾配を正確に制御することが重要性である。現在所有している共焦点レーザー顕微鏡の試料ホルダーを改良し、長さ11、幅3、厚さ2mmの試料を観察可能にするとともに、温度勾配を制御するために赤外線イメージ炉の焦点-試料間の距離を可変とするステージを設置した。試料中の温度勾配は試料ホルダーに溶接した3箇所の熱電対と試料先端からの位置を変えて溶接した熱電対により測定できるようにした。これらの改良により、30K/mmの温度勾配下、高純度アルゴン雰囲気内で高純度アルミナるつぼ中、低炭素鋼(C : 0.14%)の平滑結晶を試料の長手方向に一方向成長させることに成功した。観察結果はビデオテープに録画後1/30秒毎にコマ送りして、平滑結晶の成長速度を測定した。結晶の成長速度が4μm/s〜10μm/sの間では結晶は平滑な形態を保ったまま安定に成長した。Kurzらによって示された平滑結晶の安定領域は本実験結果と一致した。固液界面に平行して固相中にバンド状の組織が観察され、これは液相中の温度の微小変動により凝固速度が変化するためと考えられる。また、成長中に粒界が揺動する現象も観察されており、これはセル状晶の粗大化の機構と考えられる。温度勾配・冷却速度を未だ広範囲で変化させるまでには至っておらず、結晶の形態変化が観察できていないが、さらに改良を加えれば結晶の形態・速度に及ぼす、温度勾配、溶質濃度、凝固速度の影響を詳細に検討できると考えている。

  28. Fundamental study to develop process for producing ultra clean steel with confocal scanning laser microscope (In-situ observation and analysis of agglomeration and removal of non-metallic inclusions in metal melts)

    EMI Toshihiko, SHIBATA Hiroyuki, SUZUKI Mikio, SATO Shunichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    1995 - 1996

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    The behavior of various non-metallic inclusion particles on molten steel surface was "in-situ" studied by using a confocal scanning laser microscope combined with an infrared image furnace. A long-range strong attraction between alumina and alumina-rich solid inclusion particles, and detailed sequence of the collision, agglomeration and formation of alumina clusters was observed on molten steel surface. This attraction force was found to be over 10^<-16>N,reach over 10mum for alumina particles larger than 3mum, and play an important role to promote collision between the particles to form intermediate aggregates, the same between the intermediate aggregates to form loose alumina cluster, and to densify the loose clusters into compact ones. This force was not influenced by the existence of surfactant sulfur in the steel melt. The origin of this long-range strong attraction was examined to be caused by capillary effect around alumina particles on molten steel surface. Solid CaO-Al_2O^3 and CaO-Al_2O_3-SiO_2 inclusion particles were subjected to quick agglomeration to form clusters which densified and deformed into massive solid inclusion particles much easier. The attraction was also found to be in the range of 10^<-16>-10^<-13>N for different particles and extended to a distance of up to 100mum. However, such capillary attraction was not at all found between liquid CaO-Al_2O_3-SiO_2 inclusion particles. Even when the two liquid particles came in touch, merger took place only after contacting for a while. The merger of liquid CaO-Al_2O_3 particles was even more difficult for small particles of less than 7mum, but easier for particles larger than 24mum. Furthermore, an interaction of non-metallic inclusions with advancing melt/solid interface of steel crystals was investigated. The engulfment and pushing of inclusions by the melt/solid interface were clearly observed, and criteria for the engulfment were determined for different inclusion species.

  29. Development of High Temperature Stress-Strain Test for Multi-Layred Materials

    EMI Toshihiko, FUJII Tetsuya, SHIBATA Hiroyuki, SATO Shunichi, SUZUKI Mimiko

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    1994 - 1996

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    In present study, convenient and simple temperature gradient tensile and bending tests were developed with which mechanical properties of materials which exhibit multi-layr structure under temperature gradient, e.g., steels in casting mold and the critical strain for the crack formation can be determined at better accuracy with rectangular test-pieces. (1) Results of present tests agree well with those by thermal elastic plastic stress analysis where finite element code is employed with corresponding stress-strain data measured in isothermal temperature field at different temperatures. The present tests can replace, therefore, the troublesome tensile tests as well as the complicated thermal elastic plastic stress analysis, and capable of determining mechanical properties of multi-layred materials (or materials under temperature gradient) reliably by one test. (2) The fracture strength of solidifying steel shells determined by the temperature gradient test agrees well with that by a submerged split chill tensile test to measure in-situ the fracture strength of solidifying steel shells. The fracture strength of ultra low and low carbon steel shells with thinner thickness is lower than that of medium and high carbon steels. (3) Internal cracks were found to form at the hot side of test-piece during straining. The critical strain was independent of test methods, measured from 0.6% to 2.1% and decreased with increasing carbon content and grain boundary segregation. Surface cracks arising in high speed casting of peritectic medium carbon (0.09-0.16mass%C) steel slabs is not caused by low fracture strength of the steels. A cause of cracking for these steels is, therefore, considered that the shell deformation occurs as a consequence of shell shrinkage due to delta/gamma transformation during initial solidification. The shrinkage induces surface roughness of the shell, resulting in anomalous decrease of heat transfer from the shell to mold, often causing uneven shell growth and surface cracks on the shell.

  30. Development of novel refining method for ultra-purified materials

    SATO Shunichi, SHIBATA Hiroyuki, EMI Toshihiko

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (B)

    Category: Grant-in-Aid for General Scientific Research (B)

    Institution: Tohoku University

    1994 - 1995

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    In this research, we tried to develop a momentum control method based on the interaction between the laser light and the atomic beam to establish a base of novel ultra-purification method of a wide variety of materials. To achieve this purpose, we made experimental equipment. This contains a laser source and a ultravacuum system. As a result, the pressure of 10^<-11> Torr was obtained. However, this value is the limitation of our measurement equipment and we believe that the pressure may be lower than this. As a laser source, a compact and inexpensive semiconductor laser is suitable and desirable features for our experiments are as follows. 1. a spectral width as narrow as 100 kHz, 2. higher stability and 3. fast frequency scanning. As a first step, the output from the semiconductor laser is feedbacked by confocal Fabry-Perot interferometer to stabilize the laser frequency and to reduce its width. The laser frequency was widely scanned but not smooth due to the mode-hopping. By using a grating, smooth and wide range of scanning was achieved. Moreover, we studied on a novel isotope separation on the basis of a light induced drift effect. In this research, the light induced drift was clearly observed in a larger reaction cell than those ever reported. It is thought that a highly efficient isotope separation is possible by our method.

  31. 金属・酸化物の急冷凝固プロセスの熱伝達制御による高速化

    江見 俊彦, 柴田 浩幸, 佐藤 俊一, 鈴木 幹雄

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 重点領域研究

    Category: 重点領域研究

    Institution: 東北大学

    1994 - 1995

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    工業的な急冷凝固プロセスである鋼のスラブ連続鋳造では、熱間圧延機と同期し直結化する操業が盛んに行われている。直結化のために必要不可欠な技術は、圧延機の生産量に連鋳の生産量を一致させるための高速鋳造技術と欠陥の無い健全な鋳片の製造技術である。高速化していくと特に凝固時に包晶反応を伴う鋼では鋳型内の伝熱異常と鋳片表面割れが多発するという問題があり、高速化が遅れている。これは鋳型内において、凝固殻の変形に伴う表面形状と凝固時の抜熱量との関係、および鋳型内の伝熱を制御するモ-ルドフラックス(以下MF)の特性とその制御因子が定量的に明らかになっていないためである。本研究では連続鋳造プロセスの高速化を進めるために以下の研究を実施した。 1.溶鋼を鋳型で直接冷却した場合の凝固殻の変形量と凝固時の抜熱量を同時計測する装置を作製し、さらに得られた凝固殻の表面の形状の関係を定量的に評価した。亜包晶鋼および極低炭素鋼では表面の凹凸が大きく、鋳型/鋳片間の熱流束が低下することが明らかとなったが、収縮量との関係はまだ明らかではない。 鋳型/MF間の界面熱抵抗を測定し、MFの表面に凹凸が生じ、熱抵抗が生じることが明らとなった。さらにガラス層・結晶層・融体層の各層の熱拡散率測定を行った。 1、2より鋳型内の伝熱に関する素過程は明らかになってきているが、高速化を阻害している原因と解決策を明らかにするには本研究から得られた基礎的データを基に総合的に鋳型内伝熱を検討する必要がある。

  32. 金属、酸化物の急冷凝固プロセスの熱伝達制御による高速化

    江見 俊彦, 柴田 浩幸, 佐藤 俊一

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 重点領域研究

    Category: 重点領域研究

    Institution: 東北大学

    1994 - 1994

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    本研究では、急冷凝固プロセスとしてスラブ連続鋳造およびストリップ連続鋳造の初期凝固を対象とし、モ-ルドフラックス/鋳型界面(スラブ連鋳)、凝固殻/鋳型界面(ストリップ連鋳)の界面熱抵抗、およびモ-ルドフラックス(以下フラックス)・鋳片の鋳型側界面の形状と界面の熱流束の関係について基礎的な検討を行った。 銅鋳型中に熱電対を設置し、そこにフラックス融液を注ぎ、固化過程の温度応答を計測した。得られた温度応答に逆問題の解法を適用し、鋳型表面の熱流束を求めた。実測されたフラックス表面の温度と計算で求めた銅鋳型表面温度から界面熱抵抗を求めた。極低炭素鋼用、低炭素鋼用、中炭素鋼用のフラックスについて測定を行い、低炭素鋼用のフラックスが他のフラックスに比べ、低い界面熱抵抗を示すことが明らかになった。また、フラックスの鋳型側表面の形状を測定し、これについても低炭素鋼用のフラックスが他のフラックスに比べ、凹凸が少ないことが明らかになった。また、レーザーフラッシュ法によりガラス状態および結晶状態のフラックスの熱拡散率測定を実施し、鋳型内のガラス状態(RT〜500度)と結晶状態(RT〜800度)に対応する熱拡散率値が得られた。これらのデータをもとに鋳型内の伝熱制御因子についての検討を行った。 同様の実験を炭素濃度を変えた鋼について行い、亜包晶組成の中炭素鋼では表面割れの原因となる変形が生じること、および凝固時の鋳型表面の熱流束が低下すること、が確認できた。さらに、凝固殻の鋳型側の表面の形状を表面粗度計により計測し、表面の凹凸を表す指標を確立し、炭素濃度と表面形状の関係を明らかにした。

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