研究者詳細

顔写真

シユウ シンコウ
周 振興
Zhenxing Zhou
所属
大学院工学研究科 材料システム工学専攻 マイクロシステム学講座(微粒子システムプロセス学分野)
職名
特任助教(研究)
学位
  • 博士(工学) (東華大学)

e-Rad 研究者番号
50907037

経歴 5

  • 2025年5月 ~ 継続中
    東北大学 大学院工学研究科 材料システム工学専攻 (特任)助教

  • 2022年10月 ~ 2025年5月
    東北大学 大学院工学研究科 材料システム工学専攻 特任研究員

  • 2021年4月 ~ 2022年9月
    東北大学 大学院工学研究科 材料システム工学専攻 特任助教

  • 2019年9月 ~ 2021年3月
    東北大学 大学院工学研究科 材料システム工学専攻 ポスドク

  • 2017年11月 ~ 2019年8月
    東北大学 大学院工学研究科 材料システム工学専攻 学術研究員

学歴 1

  • 東華大学 材料学部 材料学専攻 博士課程

    2013年9月 ~ 2019年7月

所属学協会 2

  • 日本金属学会

    2020年5月 ~ 継続中

  • 粉体粉末冶金協会

    2018年6月 ~ 継続中

研究キーワード 5

  • 構造・機能材料

  • 粉末冶金

  • レーザー 3次元積層造形

  • 複合材料

  • 熱電材料

研究分野 4

  • ナノテク・材料 / ナノマイクロシステム /

  • ナノテク・材料 / ナノ材料科学 /

  • ナノテク・材料 / 複合材料、界面 /

  • ナノテク・材料 / 材料加工、組織制御 /

論文 47

  1. Powder-engineered high-strength, high-conductivity MXene/Al matrix composites

    Weiwei Zhou, Zhenxing Zhou, Li-Fu Yi, Mingqi Dong, Zhong-Chun Chen, Naoyuki Nomura

    Journal of Alloys and Compounds 1074 189079-189079 2026年6月

    出版者・発行元: Elsevier BV

    DOI: 10.1016/j.jallcom.2026.189079  

    ISSN:0925-8388

  2. Laser additive manufacturing of novel Al-matrix composites reinforced with high-volume multiscale in-situ Al4C3

    Li-Fu Yi, Weiwei Zhou, Kakeru Yabe, Zhenxing Zhou, Taiki Komori, Peter Benard Oboso, Naoyuki Nomura, Zhong-Chun Chen

    Materials Science and Engineering: A 962 150221-150221 2026年6月

    出版者・発行元: Elsevier BV

    DOI: 10.1016/j.msea.2026.150221  

    ISSN:0921-5093

  3. In-situ Oxide Film Formation and Enhanced Corrosion Resistance in L-PBF Fabricated 316L Stainless Steel Using SiO<sub>2</sub>-Modified Powders

    Shodai TAGUCHI, Zhenxing ZHOU, Mingqi DONG, Pan LIU, Xiangyu ZHONG, Tetsuo SHOJI, Weiwei ZHOU, Naoyuki NOMURA

    Journal of the Japan Society of Powder and Powder Metallurgy 73 (4) 109-120 2026年4月15日

    出版者・発行元: Japan Society of Powder and Powder Metallurgy

    DOI: 10.2497/jjspm.25-00055  

    ISSN:0532-8799

    eISSN:1880-9014

  4. Mechanical property evaluation of 316 L micro-powders via particle compression tests and finite element method simulation

    Tao Zhang, Shoma Sekita, Weiwei Zhou, Zhenxing Zhou, Mingqi Dong, Naoyuki Nomura

    MATERIALIA 45 2026年3月

    DOI: 10.1016/j.mtla.2026.102660  

    ISSN:2589-1529

  5. Research on Gas Emission Characteristics During Dynamic Coal Breaking in Boreholes Based on Bidisperse Diffusion Model and Coal Dust Desorption Calculation Model: Under Different Original Gas Pressures and Overburden Loads

    Zhenxing Zhou, Gongda Wang, Haiyan Wang, Huiyong Niu, Yikang Liu, Xiaolu Liu

    INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS 2026年2月5日

    DOI: 10.1002/nag.70266  

    ISSN:0363-9061

    eISSN:1096-9853

  6. Size-dependent tribological performance of graphene-reinforced Al matrix composites

    Weiwei Zhou, Zhenxing Zhou, Li-Fu Yi, Mingqi Dong, Zhong-Chun Chen, Naoyuki Nomura

    SMART MATERIALS IN MANUFACTURING 4 2026年

    DOI: 10.1016/j.smmf.2025.100115  

    eISSN:2772-8102

  7. Fabrication and Functionalization of Low-Dimensional Nanofillers-Reinforced Silver-Reinforced Matrix Composites

    Weiwei Zhou, Zhenxing Zhou, Yunsong Xu, Mingqi Dong, Naoyuki Nomura

    Materia Japan 64 (10) 645-650 2025年10月1日

    出版者・発行元: Japan Institute of Metals

    DOI: 10.2320/materia.64.645  

    ISSN:1340-2625

    eISSN:1884-5843

  8. Enhanced interfacial strength in carbon-nanotubes-reinforced Al matrix composites via an interface substitution strategy

    Weiwei Zhou, Zhenxing Zhou, Mingqi Dong, Yuchi Fan, Keiichi Shirasu, Go Yamamoto, Naoyuki Nomura

    COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING 195 2025年8月

    DOI: 10.1016/j.compositesa.2025.108955  

    ISSN:1359-835X

    eISSN:1878-5840

  9. Ti addition-induced simultaneous enhancement of powder properties, melting behavior, and tensile response of pure Al for laser powder bed fusion

    Weiwei Zhou, Zhenxing Zhou, Tao Zhang, Takamune Miura, Fei Sun, Naoyuki Nomura

    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 938 2025年8月

    DOI: 10.1016/j.msea.2025.148458  

    ISSN:0921-5093

    eISSN:1873-4936

  10. Severe plastic deformation promoted simultaneous enhancement in strength and ductility of multilayer MXene/Ag matrix composites

    Yunsong Xu, Weiwei Zhou, Li-Fu Yi, Itsuki Kubo, Zhenxing Zhou, Zhong-Chun Chen, Naoyuki Nomura

    Scripta Materialia 261 116612-116612 2025年5月

    出版者・発行元: Elsevier BV

    DOI: 10.1016/j.scriptamat.2025.116612  

    ISSN:1359-6462

  11. Influences of Different Additives on Laser-Based Additive Manufacturing of Pure Aluminum

    Zhenxing Zhou, Weiwei Zhou, Naoyuki Nomura

    Journal of the Japan Society of Powder and Powder Metallurgy 72 (Supplement) S1087-S1092 2025年3月15日

    出版者・発行元: Japan Society of Powder and Powder Metallurgy

    DOI: 10.2497/jjspm.16b-t6-28  

    ISSN:0532-8799

    eISSN:1880-9014

  12. Creation of heavily La-doped SrTiO3 thermoelectric films achieved by freeze-dry pulsated orifice ejection method and laser powder bed fusion

    Myeonggyun Kang, Zhenxing Zhou, Weiwei Zhou, Naoyuki Nomura

    SMART MATERIALS IN MANUFACTURING 3 2025年

    DOI: 10.1016/j.smmf.2025.100077  

    eISSN:2772-8102

  13. Microstructure evolution and enhanced mechanical performance of multilayer MXene-reinforced silver matrix composites

    Itsuki Kubo, Weiwei Zhou, Yunsong Xu, Zhenxing Zhou, Naoyuki Nomura

    Journal of Alloys and Compounds 1007 176324-176324 2024年12月

    出版者・発行元: Elsevier BV

    DOI: 10.1016/j.jallcom.2024.176324  

    ISSN:0925-8388

  14. Laser additive manufacturing of a carbon-supersaturated β-Ti alloy for biomaterial application

    Mingqi Dong, Yu Zhang, Weiwei Zhou, Peng Chen, Zhenxing Zhou, Hiroyasu Kanetaka, Takuya Ishimoto, Yuichiro Koizumi, Takayoshi Nakano, Naoyuki Nomura

    Additive Manufacturing Letters 11 2024年12月

    DOI: 10.1016/j.addlet.2024.100233  

    eISSN:2772-3690

  15. Effects of Plasma Spheroidization Treatment on the Characteristics of MoSiBTiC Powders Fabricated by Freeze-Dry Pulsated Orifice Ejection Method

    Zhenxing Zhou, Shunpei Kato, Weiwei Zhou, Naoyuki Nomura

    Journal of the Japan Institute of Metals and Materials 88 (9) 210-215 2024年9月1日

    出版者・発行元: Japan Institute of Metals

    DOI: 10.2320/jinstmet.ja202413  

    ISSN:0021-4876

    eISSN:1880-6880 2433-7501

  16. Microstructure evolution of FD-POEM powders during high-temperature plasma spheroidization

    Zhenxing Zhou, Shunpei Kato, Weiwei Zhou, Naoyuki Nomura

    Advanced Powder Technology 35 (1) 104297-104297 2024年1月

    出版者・発行元: Elsevier BV

    DOI: 10.1016/j.apt.2023.104297  

    ISSN:0921-8831

  17. Effects of powder surface conditions on the rheological behavior of Ti–6Al–4 V alloy powders for additive manufacturing

    Naoki Kakegawa, Shion Nanaumi, Zhenxing Zhou, Weiwei Zhou, Naoyuki Nomura

    Powder Technology 430 119019-119019 2023年12月

    出版者・発行元: Elsevier BV

    DOI: 10.1016/j.powtec.2023.119019  

    ISSN:0032-5910

  18. Improvement of powder fabrication for additive manufacturing using ultrafine bubbles

    Suxia Guo, Zhenxing Zhou, Mingqi Dong, Weiwei Zhou, Naoyuki Nomura

    Additive Manufacturing Letters 7 100181-100181 2023年12月

    出版者・発行元: Elsevier BV

    DOI: 10.1016/j.addlet.2023.100181  

    ISSN:2772-3690

  19. Effects of Plasma Spheroidization Treatment on the Characteristics of MoSiBTiC Powders Fabricated by Freeze-Dry Pulsated Orifice Ejection Method

    Zhenxing Zhou, Shunpei Kato, Weiwei Zhou, Naoyuki Nomura

    MATERIALS TRANSACTIONS 64 (6) 1119-1124 2023年6月1日

    出版者・発行元: Japan Institute of Metals

    DOI: 10.2320/matertrans.mt-me2022008  

    ISSN:1345-9678

    eISSN:1347-5320

  20. Powder Fabrication and Laser Powder Bed Fusion of a MoSiBTiC-La2O3 Alloy

    Chenguang Li, Suxia Guo, Zhenxing Zhou, Weiwei Zhou, Naoyuki Nomura

    Crystals 13 (2) 215-215 2023年1月24日

    出版者・発行元: MDPI AG

    DOI: 10.3390/cryst13020215  

    eISSN:2073-4352

    詳細を見る 詳細を閉じる

    In the present work, an approach of freeze-dry pulsated orifice ejection method (FD-POEM) was utilized to fabricate monodispersed MoSiBTiC-La2O3 composite powders for laser powder bed fusion (L-PBF). The FD-POEM powders were spherically shaped, possessing a narrow size range and uniform element distribution. As revealed by the single-track and single-layer experiments, the porous FD-POEM particles were sufficiently fused under laser irradiation, leading to the generation of continuous laser tracks and low surface roughness layers, which proved a feasible L-PBF processability of MoSiBTiC-La2O3 powders. Careful microstructural observations confirmed that the microstructure of the molten pools was primarily composed of Mo solid solution dendrites reinforced with La2O3 nanoparticles. Consequently, the single MoSiBTiC-La2O3 track had a high Martens hardness of 3955 HM. The result of this work reveals that the combination of FD-POEM and L-PBF has a great potential of developing advanced heat-resistant Mo-based alloys with tailored structures for ultrahigh-temperature applications.

  21. Microstructures and Mechanical Properties of Carbon-Added Ti Composites Fabricated by Laser Powder Bed Fusion or Spark Plasma Sintering

    Mingqi Dong, Weiwei Zhou, Zhenxing Zhou, Naoyuki Nomura

    MATERIALS TRANSACTIONS 64 (1) 54-60 2023年1月1日

    出版者・発行元: Japan Institute of Metals

    DOI: 10.2320/matertrans.mt-mla2022008  

    ISSN:1345-9678

    eISSN:1347-5320

  22. Simultaneous enhancement of powder properties, additive manufacturability, and mechanical performance of Ti–6Al–4V alloy by 2D-nanocarbon decoration

    Mingqi Dong, Weiwei Zhou, Zhenxing Zhou, Naoyuki Nomura

    Materials Science and Engineering A 859 2022年11月24日

    DOI: 10.1016/j.msea.2022.144215  

    ISSN:0921-5093

  23. Laser powder bed fusion of MoSiBTiC alloy powders produced by freeze-dry pulsated orifice ejection method

    Zhenxing Zhou, Suxia Guo, Shunpei Kato, Weiwei Zhou, Naoyuki Nomura

    JOURNAL OF ALLOYS AND COMPOUNDS 921 2022年11月

    DOI: 10.1016/j.jallcom.2022.165997  

    ISSN:0925-8388

    eISSN:1873-4669

  24. Elucidating the impact of severe oxidation on the powder properties and laser melting behaviors

    Weiwei Zhou, Nina Takase, Mingqi Dong, Naoki Watanabe, Suxia Guo, Zhenxing Zhou, Naoyuki Nomura

    Materials and Design 221 2022年9月

    DOI: 10.1016/j.matdes.2022.110959  

    ISSN:0264-1275

    eISSN:1873-4197

  25. Structural evolution mechanism during 3D printing of MXene-reinforced metal matrix composites

    Weiwei Zhou, Zhenxing Zhou, Suxia Guo, Yuchi Fan, Naoyuki Nomura

    Composites Communications 29 2022年1月

    DOI: 10.1016/j.coco.2021.101034  

    ISSN:2452-2139

  26. Laser additive manufacturing of pure molybdenum using freeze-dry pulsated orifice ejection method-produced powders

    Suxia Guo, Weiwei Zhou, Zhenxing Zhou, Naoyuki Nomura

    Journal of Materials Research and Technology 16 1508-1516 2022年1月1日

    DOI: 10.1016/j.jmrt.2021.12.084  

    ISSN:2238-7854

  27. レーザ粉末床溶融結合法ならびに放電プラズマ焼結法により作製した炭素添加チタン基複合材料の組織と機械的性質

    董 明琪, 周 偉偉, 周 振興, 野村 直之

    軽金属 72 (6) 314-320 2022年

    出版者・発行元: 一般社団法人 軽金属学会

    DOI: 10.2464/jilm.72.314  

    ISSN:0451-5994

    eISSN:1880-8018

  28. A novel approach of fabricating monodispersed spherical MoSiBTiC particles for additive manufacturing

    Zhenxing Zhou, Suxia Guo, Weiwei Zhou, Naoyuki Nomura

    SCIENTIFIC REPORTS 11 (1) 2021年8月

    DOI: 10.1038/s41598-021-96187-w  

    ISSN:2045-2322

  29. In-situ reduction of mo-based composite particles during laser powder bed fusion

    Suxia Guo, Weiwei Zhou, Zhenxing Zhou, Yuchi Fan, Wei Luo, Naoyuki Nomura

    Crystals 11 (6) 2021年6月

    DOI: 10.3390/cryst11060702  

    eISSN:2073-4352

  30. Significant strengthening effect in few-layered MXene-reinforced Al matrix composites

    Weiwei Zhou, Zhenxing Zhou, Yuchi Fan, Naoyuki Nomura

    Materials Research Letters 9 (3) 148-154 2021年

    DOI: 10.1080/21663831.2020.1861120  

    eISSN:2166-3831

  31. Design of high-performance Al<inf>4</inf>C<inf>3</inf>/Al matrix composites for electric conductor

    Weiwei Zhou, Zhenxing Zhou, Korefumi Kubota, Hironobu Ono, Naoyuki Nomura, Akira Kawasaki

    Materials Science and Engineering A 798 2020年11月4日

    DOI: 10.1016/j.msea.2020.140331  

    ISSN:0921-5093

  32. Liquid-Phase Assisted Engineering of Highly Strong SiC Composite Reinforced by Multiwalled Carbon Nanotubes

    Yuchi Fan, Erhong Song, Tufail Mustafa, Ruicong Liu, Pengpeng Qiu, Weiwei Zhou, Zhenxing Zhou, Akira Kawasaki, Keiichi Shirasu, Toshiyuki Hashida, Jianjun Liu, Lianjun Wang, Wan Jiang, Wei Luo

    Advanced Science 7 (21) 2020年11月1日

    DOI: 10.1002/advs.202002225  

    eISSN:2198-3844

  33. Enhanced TE properties of Cu@Ag/Bi2Te3 nanocomposites by decoupling electrical and thermal properties

    Xiaofang Lu, Qi Zheng, Shijia Gu, Rui Guo, Li Su, Jiancheng Wang, Zhenxing Zhou, Yuchi Fan, Wan Jiang, Lianjun Wang

    CHINESE CHEMICAL LETTERS 31 (3) 880-884 2020年3月

    DOI: 10.1016/j.cclet.2019.07.034  

    ISSN:1001-8417

    eISSN:1878-5964

  34. 凍結乾燥POEM法を用いたMoSiBTiC複合粉末の作製とそのレーザ積層造形

    加藤駿平, 周振興, 清野雄太, 周偉偉, 吉見享祐, 野村直之

    日本金属学会講演大会(Web) 167th 2020年

  35. Microstructure and composition engineering Yb single-filled CoSb3 for high thermoelectric and mechanical performances

    Zhenxing Zhou, Matthias T. Agne, Qihao Zhang, Shun Wan, Qingfeng Song, Qing Xu, Xiaofang Lu, Shijia Gu, Yuchi Fan, Wan Jiang, Gerald Jeffrey Snyder, Lianjun Wang

    JOURNAL OF MATERIOMICS 5 (4) 702-710 2019年12月

    DOI: 10.1016/j.jmat.2019.04.008  

    ISSN:2352-8478

  36. Effect of Spark Plasma Sintering on Sintering Process of Filled Skutterudites Thermoelectric Properties

    Zhenxing Zhou, Xiaofang Lu, Lianjun Wang, Shijia Gu

    Materials China 38 (6) 588-593 2019年6月1日

    DOI: 10.7502/j.issn.1674-3962.201706007  

    ISSN:1674-3962

  37. Structurally nanocrystalline electrically monocrystalline Sb2Te3 with high thermoelectric performance

    Xiaofang Lu, Ping Lu, Yuchi Fan, Weiwei Zhou, Shijia Gu, Zhenxing Zhou, Jie Zhang, Li Su, Lianjun Wang, Wan Jiang

    SCRIPTA MATERIALIA 166 81-86 2019年6月

    DOI: 10.1016/j.scriptamat.2019.03.013  

    ISSN:1359-6462

  38. The effect of reduced graphene oxide on microstructure and thermoelectric properties of Nb-doped A-site-deficient SrTiO3 ceramics

    Cao Wu, Jia Li, Yuchi Fan, Juanjuan Xing, Hui Gu, Zhenxing Zhou, Xiaofang Lu, Qihao Zhang, Lianjun Wang, Wan Jiang

    JOURNAL OF ALLOYS AND COMPOUNDS 786 884-893 2019年5月

    DOI: 10.1016/j.jallcom.2019.01.376  

    ISSN:0925-8388

    eISSN:1873-4669

  39. Uniform dispersion of SiC in Yb-filled skutterudite nanocomposites with high thermoelectric and mechanical performance

    Zhenxing Zhou, Jianlin Li, Yuchi Fan, Qihao Zhang, Xiaofang Lu, Shengjie Fan, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki, Lianjun Wang, Wan Jiang

    SCRIPTA MATERIALIA 162 166-171 2019年3月

    DOI: 10.1016/j.scriptamat.2018.11.015  

    ISSN:1359-6462

  40. Preparation and Thermoelectric Properties of Ag/Yb<inf>0.35</inf>Co<inf>4</inf>Sb<inf>12</inf> Thermoelectric Composites

    Zhen Xing Zhou, Peng Chen, Sheng Jie Fan, Xiao Fang Lu, Shi Jia Gu, Lian Jun Wang

    Rengong Jingti Xuebao/Journal of Synthetic Crystals 48 (2) 2019年2月1日

    ISSN:1000-985X

  41. Electrically Conductive and Mechanically Strong Graphene/Mullite Ceramic Composites for High-Performance Electromagnetic Interference Shielding

    Jianhong Ru, Yuchi Fan, Weiwei Zhou, Zhenxing Zhou, Tuo Wang, Ruiheng Liu, Jianping Yang, Xiaofang Lu, Jiancheng Wang, Chengchang Ji, Lianjun Wang, Wan Jiang

    ACS Applied Materials and Interfaces 10 (45) 39245-39256 2018年11月14日

    DOI: 10.1021/acsami.8b12933  

    ISSN:1944-8244

    eISSN:1944-8252

  42. Enhanced thermoelectric and mechanical properties of Na-doped polycrystalline SnSe thermoelectric materials via CNTs dispersion

    Fei Chu, Qihao Zhang, Zhenxing Zhou, Diankun Hou, Lianjun Wang, Wan Jiang

    JOURNAL OF ALLOYS AND COMPOUNDS 741 756-764 2018年4月

    DOI: 10.1016/j.jallcom.2018.01.178  

    ISSN:0925-8388

    eISSN:1873-4669

  43. Enhancing the thermoelectric performance of filled skutterudite nanocomposites in a wide temperature range via electroless silver plating

    Peng Chen, Zhenxing Zhou, Wan Jiang, Wei Luo, Jianping Yang, Juanjuan Zhu, Lianjun Wang, Yuchi Fan

    SCRIPTA MATERIALIA 146 136-141 2018年3月

    DOI: 10.1016/j.scriptamat.2017.11.019  

    ISSN:1359-6462

  44. Realizing high-performance thermoelectric power generation through grain boundary engineering of skutterudite-based nanocomposites

    Qihao Zhang, Zhenxing Zhou, Maxwell Dylla, Matthias T. Agne, Yanzhong Pei, Lianjun Wang, Yunshan Tang, Jincheng Liao, Juan Li, Shengqiang Bai, Wan Jiang, Lidong Chen, Gerald Jeffrey Snyder

    NANO ENERGY 41 501-510 2017年11月

    DOI: 10.1016/j.nanoen.2017.10.003  

    ISSN:2211-2855

    eISSN:2211-3282

  45. Constructing nanoporous carbon nanotubes/Bi2Te3 composite for synchronous regulation of the electrical and thermal performances

    Qihao Zhang, Leilei Xu, Zhenxing Zhou, Lianjun Wang, Wan Jiang, Lidong Chen

    JOURNAL OF APPLIED PHYSICS 121 (5) 2017年2月

    DOI: 10.1063/1.4975467  

    ISSN:0021-8979

    eISSN:1089-7550

  46. Enhanced thermoelectric properties in p-type Bi0.4Sb1.6Te3 alloy by combining incorporation and doping using multi-scale CuAlO2 particles

    Zijun Song, Qihao Zhang, Yuan Liu, Zhenxing Zhou, Xiaofang Lu, Lianjun Wang, Wan Jiang, Lidong Chen

    PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE 214 (1) 2017年1月

    DOI: 10.1002/pssa.201600451  

    ISSN:1862-6300

    eISSN:1862-6319

  47. Preparation of bulk AgNWs/PEDOT:PSS composites: a new model towards high-performance bulk organic thermoelectric materials

    Yuan Liu, Zijun Song, Qihao Zhang, Zhenxing Zhou, Yijing Tang, Lianjun Wang, Juanjuan Zhu, Wei Luo, Wan Jiang

    RSC ADVANCES 5 (56) 45106-45112 2015年

    DOI: 10.1039/c5ra05551b  

    eISSN:2046-2069

︎全件表示 ︎最初の5件までを表示

MISC 2

  1. レーザ粉末床溶融結合法ならびに放電プラズマ焼結法により作製した炭素添加チタン基複合材料の組織と機械的性質—Microstructures and mechanical properties of carbon-added Ti composites fabricated by laser powder bed fusion or spark plasma sintering—特集 軽金属材料の三次元造形技術

    董 明琪, 周 偉偉, 周 振興, 野村 直之

    軽金属 72 (6) 314-320 2022年6月

    ISSN: 0451-5994

  2. 超高温耐熱材料MoSiBTiC合金のレーザ三次元積層造形への試み—Challenges for the Fabrication of Heat-resistant MoSiBTiC Alloy Using Laser Powder Bed Fusion for Ultrahigh Temperature Applications—特集 レーザーテクノロジーとセラミックス

    野村 直之, 周 偉偉, 周 振興, 吉見 享祐

    Ceramics Japan = セラミックス : bulletin of the Ceramic Society of Japan 55 (2) 90-92 2020年2月

    出版者・発行元: 日本セラミックス協会

    ISSN: 0009-031X

共同研究・競争的資金等の研究課題 2

  1. 積層欠陥を導入して導電性と強度を両立する軽元素過飽和固溶Al基合金の創製

    周 振興, 周 偉偉, 野村 直之

    提供機関:Japan Society for the Promotion of Science

    制度名:Grants-in-Aid for Scientific Research

    研究種目:Grant-in-Aid for Scientific Research (C)

    研究機関:Tohoku University

    2025年4月1日 ~ 2028年3月31日

  2. 新奇球状複合粉末調製技術とレーザ粉末積層造形を活用した過飽和固溶熱電材料の創製

    周 振興

    提供機関:Japan Society for the Promotion of Science

    制度名:Grants-in-Aid for Scientific Research

    研究種目:Grant-in-Aid for Early-Career Scientists

    研究機関:Tohoku University

    2023年4月1日 ~ 2025年3月31日

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    1. Different composite powders were prepared by FD-POEM using nanoparticles as raw materials. The morphology and porosity of the FD-POEM powders were controlled by adjusting the parameters of the FD-POEM, such as solvent type, slurry concentration, vibration mode, and pressure. The working principle of the FD-POEM was investigated in the field using a high-magnification optical microscope and cooling and heating devices to clarify the relationship between these parameters and the pore formation mechanism in the powder. In addition, the effects of powder properties of the composite powder were also analyzed. Finally, a uniform spherical FD-POEM composite powder with good flowability was successfully obtained, and the laser absorption of the composite powder was improved due to the presence of numerous pores. 2. Determine optimal L-PBF parameters. Using finite element method (FEM), three-dimensional thermo-fluid analysis (FLOW-3D), and monorail tests, calculate the temperature gradient and crystallization rate of the molten pool to determine the effect of L-PBF parameters on the melting and solidification behavior of the powder and to identify factors affecting molding quality (density, cracks, etc.). Finally, a high-density thermoelectric film with a thickness of approximately 0.005mm was obtained. 3. By adopting the optimal L-PBF parameters, powders with different content were prepared using the FD-POEM method, solidified with L-PBF, and the solid solution limit was examined.