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Naoyuki Nomura

Section

Graduate School of Engineering

Job title

Professor

Degree

博士（工学）（東北大学）
修士（工学）（東北大学）

researchmap

https://researchmap.jp/7000004453

J-GLOBAL ID

201301005128282354

Research History 8

2019/04 - Present

Tohoku University　Graduate School of Engineering　Professor
2012/10 - 2019/03

Tohoku University　Graduate School of Engineering　Associate Professor
2007/10 - 2012/09

東京医科歯科大学生体材料工学研究所　准教授
2003/09 - 2007/09

Iwate University　Faculty of Engineering　Associate Professor
2000/10 - 2003/08

東北大学金属材料研究所　助手
2000/05 - 2000/09

ヘルシンキ工科大学　研究員
1999/05 - 2000/05

日本学術振興会特定国派遣研究員（フィンランド）　研究員
1999/04 - 1999/04

東北大学金属材料研究所　講師（中核的機関研究員）

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Education 3

Tohoku University　Graduate School of Engineering　Department of Materials Processing

1996/04 - 1999/03
Tohoku University　Graduate School of Engineering　Department of Materials Processing

1994/06 - 1996/03
Tohoku University　Faculty of Engineering

1990/04 - 1994/03

Committee Memberships 18

日本歯科理工学会　理事

2018/05 - Present
粉体粉末冶金協会　理事

2018/05 - Present
粉体粉末冶金協会粉末積層３D造形技術委員会　委員長

2016/04 - Present
日本金属学会会誌・欧文誌編集委員会　委員

2014/04 - Present
日本金属学会　第４分科会委員

2013/04 - Present
日本歯科理工学会北海道・東北地方会　代議員

2013/04 - Present
日本歯科理工学会　英文誌論文編集委員会委員

2011/10 - Present
日本バイオマテリアル学会　評議員

2008/04 - Present
粉体粉末冶金協会　参事

2016/05 - 2018/04
日本歯科理工学会　評議員

2008/04 - 2018/04
日本バイオマテリアル学会編集委員会　委員

2014/04 - 2018/03
粉体粉末冶金協会粉末積層３D技術委員会　副委員長

2014/04 - 2016/03
日本金属学会　まてりあ編集委員

2011/04 - 2013/03
軽金属学会関東支部　運営委員

2011/04 - 2012/09
日本歯科理工学会関東支部　役員

2008/04 - 2012/09
財団法人いわて産業振興センター戦略的基盤技術高度化支援事業「CAD/CAM技術を応用した歯科補綴物に適する生体用コバルト合金圧延材の製造技術開発」　研究推進委員

2011/10 - 2012/03
第53回日本歯科理工学会学術講演会　準備委員長

2008/10 - 2009/04
日本金属学会　まてりあ編集委員

2007/04 - 2009/03

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Professional Memberships 6

軽金属学会
日本鉄鋼協会
日本バイオマテリアル学会
日本歯科理工学会
粉体粉末冶金協会
日本金属学会

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Research Interests 5

MRI対応合金
バイオマテリアル
Biomaterials
Additive Manufacturing
Powder Metallurgy

Research Areas 4

Nanotechnology/Materials / Material fabrication and microstructure control /
Nanotechnology/Materials / Structural and functional materials /
Life sciences / Biomaterials /
Life sciences / Biomedical engineering /

Awards 10

第44回研究進歩賞

2020/05　粉体粉末冶金協会　生体用低磁性ジルコニウム合金とその積層造形体の開発
日本歯科理工学会論文賞

2017/04/15　日本歯科理工学会　歯科鋳造用Co-Cr-Mo合金の機械的性質と耐食性に及ぼすCrとNの影響
Award to the best poster

2015/12/17　Advances in Materials & Processing Technologies Conference (AMPT2015）　Effect of Ta Content on the Magnetic Susceptibility of Zr-Ta Binary Alloys Preventing Artifacts for MRI
日本歯科理工学会学術講演会発表優秀賞

2014/10/04　日本歯科理工学会　窒素，炭素を添加した歯科鋳造用高クロムCo-Cr-Mo合金の組織と機械的性質
日本歯科理工学会学術講演会発表優秀賞

2014/10/04　日本歯科理工学会　窒素、炭素を添加した歯科鋳造用高クロムCo-Cr-Mo合金の1%乳酸中での耐食性
第58回日本金属学会論文賞

2010/09　日本金属学会
Best Poster Award

2009/12　The 18th International Symosium on Processing and Fabrication of Advanced Materials(PFAM XVIII), Sendai, Japan
第7回 IBB BioFuture Research Encouragement Prize最優秀賞若手研究者部門

2009/01　東京医科歯科大学生体材料工学研究所
Best Poster Award

2008/11　4th International Symposium on Desgning, Processing and Properties of Advanced Engineering Materials, Nagoya, Japan
第6回インテリジェント・コスモス奨励賞

2004/05　インテリジェント・コスモス学術振興財団

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Papers 185

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　2025/05
Publisher: Elsevier BV
DOI： 10.1016/j.scriptamat.2025.116612 　

ISSN： 1359-6462
Preparation and application of ultrafine-bubble water for metal matrix composite powders

Nana Murata, Mingqi Dong, Weiwei Zhou, Naoyuki Nomura

Powder Technology　453　120617-120617　2025/03
Publisher: Elsevier BV
DOI： 10.1016/j.powtec.2025.120617 　

ISSN： 0032-5910
Metallic Ion Release Behaviors from Cobalt–Chromium Alloys Fabricated by Additive Manufacturing with Mechanical Grinding in an Acidic Saline Solution

Naoto Sakurai, Tomofumi Sawada, Yukinori Kuwajima, Kenta Yamanaka, Naoyuki Nomura, Masaaki Kasahara, Akihiko Chiba, Kazuro Satoh, Shinji Takemoto

Materials　18　(2)　432-432　2025/01/17
Publisher: MDPI AG
DOI： 10.3390/ma18020432 　

eISSN： 1996-1944

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This study aimed to investigate the release of metallic ions from cobalt–chromium (Co-Cr) alloys fabricated by additive manufacturing (AM) for comparison with dental casting. Co-Cr alloys were fabricated via AM using selective laser melting (SLM) and electron beam melting (EBM) in powder-bed fusion. Polished and mechanically ground specimens were prepared. Each specimen was analyzed using an electron probe microanalyzer (EPMA). Each specimen was immersed in an acidic saline solution for 7 days in accordance with ISO 10271: 2020. The EPMA indicated the segregation of some elements in the as-prepared SLM and EBM specimens, whereas the polished and ground specimens exhibited a homogenous elemental distribution. The total amount of ion release from the SLM and EBM specimens was confirmed to be less than 7 μg/cm2, which was less than 42 μg/cm2 for the cast specimen. The polished and ground specimens exhibited an even lower ion release than the as-prepared specimens. The amount of ions released from the Co-Cr alloy was less than the 200 μg/cm² requirement of ISO 22674: 2022. Co-Cr alloys fabricated by SLM and EBM could provide superior corrosion resistance to cast specimens. AM could be a valuable method for fabricating appliances and denture frameworks in dentistry.
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　2024/12
Publisher: Elsevier BV
DOI： 10.1016/j.jallcom.2024.176324 　

ISSN： 0925-8388
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　2024/12

DOI： 10.1016/j.addlet.2024.100233 　

eISSN： 2772-3690
Hybrid effect of graphite and carbon fibers on thermal properties of copper/graphite/carbon fibers composites

Li-Fu Yi, Takuto Yamashita, Yuto Utsumi, Weiwei Zhou, Naoyuki Nomura, Zhong-Chun Chen

Diamond and Related Materials　148　111450-111450　2024/10
Publisher: Elsevier BV
DOI： 10.1016/j.diamond.2024.111450 　

ISSN： 0925-9635
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　2024/09/01
Publisher: Japan Institute of Metals
DOI： 10.2320/jinstmet.ja202413 　

ISSN： 0021-4876

eISSN： 1880-6880 2433-7501
Simultaneous enhancement in mechanical and physical properties of graphene-oxide-reinforced Al matrix composites by trace-Mg-alloying strategy

Weiwei Zhou, Kousuke Osano, Naoki Kakegawa, Naoyuki Nomura

Journal of Materials Research and Technology　30　2272-2281　2024/05
Publisher: Elsevier BV
DOI： 10.1016/j.jmrt.2024.03.176 　

ISSN： 2238-7854
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　2024/01
Publisher: Elsevier BV
DOI： 10.1016/j.apt.2023.104297 　

ISSN： 0921-8831
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　2023/12
Publisher: Elsevier BV
DOI： 10.1016/j.powtec.2023.119019 　

ISSN： 0032-5910
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　2023/12
Publisher: Elsevier BV
DOI： 10.1016/j.addlet.2023.100181 　

ISSN： 2772-3690
Ultrafine-bubble-water-promoted nanoceramic decoration of metal powders for additive manufacturing

Mingqi Dong, Weiwei Zhou, Suxia Guo, Naoyuki Nomura

NPG Asia Materials　15　(1)　2023/09/08
Publisher: Springer Science and Business Media LLC
DOI： 10.1038/s41427-023-00494-9 　

eISSN： 1884-4057

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Abstract The design of composite powders for exploiting the multifunctionality of metallic nanocomposites via laser additive manufacturing (AM) is challenging. Conventional ball-milling processes are prone to cause uncontrollable powder morphology and reduced flowability, while recently developed nanodecoration technologies are limited by complicated processing and impurity inclusion. Herein, a facile and scalable approach was developed using ultrafine bubble (UFB)-assisted heteroagglomeration to fabricate high-concentration, impurity-free nanoceramic/metal composite powders. Individual ZrO₂ or Al₂O₃ nanoparticles up to ~10 wt% were homogeneously decorated on the surface of Ti-6Al-4V powders through the bridging effect of the negatively charged UFBs, leading to enhanced flowability and laser absorptivity. The nanoceramics were completely decomposed and dissolved into the matrix upon laser irradiation; therefore, a unique Ti nanocomposite exhibiting both high strength and ductility was obtained. Our work provides new insights into the application of UFBs and the fabrication of multifunctional AM components.
Microstructure and Mechanical Property of MXene-Added Ti–6Al–4V Alloy Fabricated by Laser Powder Bed Fusion

Yu Zhang, Mingqi Dong, Weiwei Zhou, Naoyuki Nomura

MATERIALS TRANSACTIONS　64　(6)　1169-1174　2023/06/01
Publisher: Japan Institute of Metals
DOI： 10.2320/matertrans.mt-me2022009 　

ISSN： 1345-9678

eISSN： 1347-5320
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　2023/06/01
Publisher: Japan Institute of Metals
DOI： 10.2320/matertrans.mt-me2022008 　

ISSN： 1345-9678

eISSN： 1347-5320
Fabrication of a strong and ductile CuCrZr alloy using laser powder bed fusion

Weiwei Zhou, Takato Kousaka, Shin-ichi Moriya, Takahiro Kimura, Takayuki Nakamoto, Naoyuki Nomura

Additive Manufacturing Letters　5　100121-100121　2023/04
Publisher: Elsevier BV
DOI： 10.1016/j.addlet.2023.100121 　

ISSN： 2772-3690
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　2023/01/24
Publisher: MDPI AG
DOI： 10.3390/cryst13020215 　

eISSN： 2073-4352

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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.
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　2023/01/01
Publisher: Japan Institute of Metals
DOI： 10.2320/matertrans.mt-mla2022008 　

ISSN： 1345-9678

eISSN： 1347-5320
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　2022/11/24

DOI： 10.1016/j.msea.2022.144215 　

ISSN： 0921-5093
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　2022/09

DOI： 10.1016/j.matdes.2022.110959 　

ISSN： 0264-1275

eISSN： 1873-4197
Experimental Characterization and Computational Simulation of Powder Bed for Powder Bed Fusion Additive Manufacturing

Keiko Kikuchi, Yuta Tanifuji, Weiwei Zhou, Naoyuki Nomura, Akira Kawasaki

MATERIALS TRANSACTIONS　63　(6)　931-938　2022/06/01
Publisher: Japan Institute of Metals
DOI： 10.2320/matertrans.mt-y2021005 　

ISSN： 1345-9678

eISSN： 1347-5320
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　165997-165997　2022/06
Publisher: Elsevier BV
DOI： 10.1016/j.jallcom.2022.165997 　

ISSN： 0925-8388
Microstructure and mechanical properties of MRI-compatible Zr-9Nb-3Sn alloy fabricated by a laser powder bed fusion process

Gözden Torun, Tatsuki Momose, Xiaohao Sun, Weiwei Zhou, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki

Additive Manufacturing　52　102647-102647　2022/04
Publisher: Elsevier BV
DOI： 10.1016/j.addma.2022.102647 　

ISSN： 2214-8604
Mechanical responses of additively manufactured MoSiBTiC alloy under tensile and compressive loadings

Tomo Takeda, Weiwei Zhou, Naoyuki Nomura, Kyosuke Yoshimi

Materials Science and Engineering: A　839　142848-142848　2022/04
Publisher: Elsevier BV
DOI： 10.1016/j.msea.2022.142848 　

ISSN： 0921-5093
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

Keikinzoku/Journal of Japan Institute of Light Metals　72　(6)　314-320　2022

DOI： 10.2464/jilm.72.314 　

ISSN： 0451-5994
Zirconium and Zirconium Alloys for Biomedical Use

T. Hanawa, N. Nomura

Advances in Materials Science Research: Volume 52　52　107-144　2022/01/01
Comparison of Powder Flow Analysis by Particle Image Velocimetry with Discrete Element Method Simulation

Yohito Masuda, Kohei Kamata, Weiwei Zhou, Naoyuki Nomura

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy　69　(10)　432-436　2022

DOI： 10.2497/jjspm.69.432 　

ISSN： 0532-8799
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　101034-101034　2022/01
Publisher: Elsevier BV
DOI： 10.1016/j.coco.2021.101034 　

ISSN： 2452-2139
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　2021/12
Publisher: Elsevier BV
DOI： 10.1016/j.jmrt.2021.12.084 　

ISSN： 2238-7854
Experimental Characterization and Computational Simulation of Powder Bed for Powder Bed Fusion Additive Manufacturing

Keiko KIKUCHI, Yuta TANIFUJI, Weiwei ZHOU, Naoyuki NOMURA, Akira KAWASAKI

Journal of the Japan Society of Powder and Powder Metallurgy　68　(10)　457-463　2021/10/15
Publisher: Japan Society of Powder and Powder Metallurgy
DOI： 10.2497/jjspm.68.457 　

ISSN： 0532-8799

eISSN： 1880-9014
Incorporating Cobalt Nanoparticles in Nitrogen-Doped Mesoporous Carbon Spheres through Composite Micelle Assembly for High-Performance Lithium–Sulfur Batteries

Yuan Fang, Yu Yao, Haoyu Yang, Yuchi Fan, Naoyuki Nomura, Weiwei Zhou, Dewei Ni, Xiaopeng Li, Wan Jiang, Pengpeng Qiu, Wei Luo

ACS Applied Materials & Interfaces　13　(32)　38604-38612　2021/08/18
Publisher: American Chemical Society (ACS)
DOI： 10.1021/acsami.1c10227 　

ISSN： 1944-8244

eISSN： 1944-8252
A novel approach of fabricating monodispersed spherical MoSiBTiC particles for additive manufacturing

Zhenxing Zhou, Suxia Guo, Weiwei Zhou, Naoyuki Nomura

SCIENTIFIC REPORTS　11　(1)　2021/08

DOI： 10.1038/s41598-021-96187-w 　

ISSN： 2045-2322
Preparation of Mono-sized ZrO2 Particles by Frezze-dry Pulsated Orifice Ejection Method Peer-reviewed

Mindqi DONG, Naohiro YASUDA, Kouki NISHIGAKI, Weiwei ZHOU, Naoyuki NOMURA

Janal of Smart Processing　10　(4)　224-229　2021/07
Publisher: Sumart Processing Society for Minerals, Environment and Energy
DOI： 10.7791/jspmee.10.224 　

ISSN： 2186-702X

eISSN： 2187-1337
Bioinspired low-magnetic Zr alloy with high strength and ductility

Weiwei Zhou, Xiaohao Sun, Yusuke Tsutsumi, Naoyuki Nomura, Takao Hanawa

Scripta Materialia　199　2021/07/01

DOI： 10.1016/j.scriptamat.2021.113856 　

ISSN： 1359-6462
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)　702-702　2021/06/18
Publisher: MDPI AG
DOI： 10.3390/cryst11060702 　

eISSN： 2073-4352

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Raw powders are processed in water during the freeze-dry pulsated orifice ejection method (FD-POEM), leading to the inclusion of oxygen impurities. This study proposes a strategy for removing the oxygen content and enhancing the mechanical performance of laser powder bed fusion (L-PBF) builds from powders using carbon nanotubes (CNTs) and H2 reduction. Spherical 1.5 wt.% CNT/Mo composite powders with uniform dispersion were fabricated via FD-POEM. The quantity of MoO2 decreased significantly, and a hexagonally structured Mo2C phase was simultaneously formed in the L-PBF build. The Mo2C with network structure was distributed along the boundaries of equiaxed Mo grains, leading to an increased Vickers hardness of the matrix. This study demonstrates the feasibility of fabricating oxygen-free and high-strength refractory parts during L-PBF for ultrahigh-temperature applications.
Laser powder bed fusion additive manufacturing, microstructure evolution, and mechanical performance of carbon nanotube-decorated titanium alloy powders

Weiwei Zhou, Kohei Kamata, Mingqi Dong, Naoyuki Nomura

Powder Technology　382　274-283　2021/04

DOI： 10.1016/j.powtec.2020.12.066 　

ISSN： 0032-5910

eISSN： 1873-328X
Combination of hot isostatic pressing and subsequent heat treatment for additively manufactured Zr-1Mo components

Xiaohao Sun, Debao Liu, Minfang Chen, Weiwei Zhou, Naoyuki Nomura, Takao Hanawa

Materials Letters　285　2021/02/15

DOI： 10.1016/j.matlet.2020.129123 　

ISSN： 0167-577X

eISSN： 1873-4979
Influence of annealing treatment on the microstructure, mechanical performance and magnetic susceptibility of low magnetic Zr–1Mo parts manufactured via laser additive manufacturing

Xiaohao Sun, Debao Liu, Minfang Chen, Weiwei Zhou, Naoyuki Nomura, Takao Hanawa

Materials Science and Engineering A　804　2021/02/15

DOI： 10.1016/j.msea.2021.140740 　

ISSN： 0921-5093
Simultaneous enhancement of dispersion and interfacial adhesion in Al matrix composites reinforced with nanoceramic-decorated carbon nanotubes

Weiwei Zhou, Peng Yang, Yuchi Fan, Naoyuki Nomura, Akira Kawasaki

Materials Science and Engineering A　804　2021/02/15

DOI： 10.1016/j.msea.2021.140784 　

ISSN： 0921-5093
Development of low magnetic zirconium-based alloys and the additively manufactured builds for biomedical applications

Naoyuki Nomura, Akira Kawasaki

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy　68　(10)　431-435　2021
Publisher: Journal of the Japan Society of Powder and Powder Metallurgy
DOI： 10.2497/jjspm.68.431 　

ISSN： 0532-8799
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

DOI： 10.1080/21663831.2020.1861120 　

eISSN： 2166-3831
Microstructure and mechanical property of graphene oxide/AlSi10Mg composites fabricated by laser additive manufacturing

Mingqi Dong, Weiwei Zhou, Kohei Kamata, Naoyuki Nomura

Materials Characterization　170　2020/12

DOI： 10.1016/j.matchar.2020.110678 　

ISSN： 1044-5803
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　2020/11/04

DOI： 10.1016/j.msea.2020.140331 　

ISSN： 0921-5093
Hot isostatic pressing of MRI compatible Zr-1Mo components manufactured by laser powder bed fusion

Xiaohao Sun, Debao Liu, Minfang Chen, Weiwei Zhou, Naoyuki Nomura, Takao Hanawa

Materials Characterization　169　2020/11

DOI： 10.1016/j.matchar.2020.110657 　

ISSN： 1044-5803
Effect of hot isostatic pressing on the microstructure and fracture toughness of laser additive-manufactured MoSiBTiC multiphase alloy Peer-reviewed

Weiwei Zhou, Kengo Tsunoda, Naoyuki Nomura, Kyosuke Yoshimi

Materials & Design　196　109132-109132　2020/11
Publisher: Elsevier BV
DOI： 10.1016/j.matdes.2020.109132 　

ISSN： 0264-1275

eISSN： 1873-4197
Uniformity of the glassy state of iron-based metallic glassy particles and reproducibility of fabricating microparts Peer-reviewed

Rui Yamada, Noriharu Yodoshi, Naoyuki Nomura, Junji Saida, Akira Kawasaki

Materials and Design　191　108667　2020/06

DOI： 10.1016/j.matdes.2020.108667 　

ISSN： 0264-1275

eISSN： 1873-4197
In-situ formation of ceramic layer on Mo-based composites via laser powder bed fusion Peer-reviewed

Weiwei Zhou, Keiko Kikuchi, Naoyuki Nomura, Kyosuke Yoshimi, Akira Kawasaki

Materialia　10　100655-100655　2020/05
Publisher: Elsevier BV
DOI： 10.1016/j.mtla.2020.100655 　

ISSN： 2589-1529
Effects of process parameters on the mechanical properties of additively manufactured Zr–1Mo alloy builds Peer-reviewed

Xiaohao Sun, Debao Liu, Weiwei Zhou, Naoyuki Nomura, Yusuke Tsutsumi, Takao Hanawa

Journal of the Mechanical Behavior of Biomedical Materials　104　103655-103655　2020/04
Publisher: Elsevier BV
DOI： 10.1016/j.jmbbm.2020.103655 　

ISSN： 1751-6161

eISSN： 1878-0180
Novel laser additive-manufactured Mo-based composite with enhanced mechanical and oxidation properties Peer-reviewed

Weiwei Zhou, Keiko Kikuchi, Naoyuki Nomura, Kyosuke Yoshimi, Akira Kawasaki

JOURNAL OF ALLOYS AND COMPOUNDS　819　152981-152981　2020/04

DOI： 10.1016/j.jallcom.2019.152981 　

ISSN： 0925-8388

eISSN： 1873-4669
Effects of quenching process on microstructure, mechanical properties and magnetic susceptibility in Zr[sbnd]1Mo alloy fabricated by powder bed fusion process Peer-reviewed

Xiaohao Sun, Debao Liu, Weiwei Zhou, Naoyuki Nomura, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

Materials and Design　187　108356-108356　2020/02

DOI： 10.1016/j.matdes.2019.108356 　

ISSN： 0264-1275

eISSN： 1873-4197
Torque property of titanium alloy cerebral aneurysm clips in a magnetic resonance scanner Peer-reviewed

Minghui Tang, Shingo Kawahira, Naoyuki Nomura, Toru Yamamoto

Journal of Materials Science: Materials in Medicine　31　(1)　6-6　2020/01
Publisher: Springer Science and Business Media LLC
DOI： 10.1007/s10856-019-6329-4 　

ISSN： 0957-4530

eISSN： 1573-4838
Additive manufacturing 3d printing technology and HIP/CIP Peer-reviewed

Naoyuki Nomura, Itaru Masuoka

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy　67　(2)　52-52　2020
Publisher: Japan Society of Powder and Powder Metallurgy
DOI： 10.2497/jjspm.67.52 　

ISSN： 0532-8799

eISSN： 1880-9014
Structural evolution of multi-walled carbon nanotubes during the consolidation of Al matrix composites

Weiwei Zhou, Chao Chen, Yuchi Fan, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki

Materials Letters　257　126731-126731　2019/12/15

DOI： 10.1016/j.matlet.2019.126731 　

ISSN： 0167-577X
Ultrathin and Light-Weight Graphene Aerogel with Precisely Tunable Density for Highly Efficient Microwave Absorbing Peer-reviewed

Jiaxin Ma, Wenhao Li, Yuchi Fan, Jiyi Yang, Qingkun Yang, Jiancheng Wang, Wei Luo, Weiwei Zhou, Naoyuki Nomura, Lianjun Wang, Wan Jiang

ACS Applied Materials & Interfaces　11　(49)　46386-46396　2019/12/11
Publisher: American Chemical Society (ACS)
DOI： 10.1021/acsami.9b17849 　

ISSN： 1944-8244

eISSN： 1944-8252
Corrigendum to “Interfacial reaction induced efficient load transfer in few-layer graphene reinforced Al matrix composites for high-performance conductor” [Compos Part B: Eng 167 (2019) 93–99] Peer-reviewed

Weiwei Zhou, Pavlina Mikulova, Yuchi Fan, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki

Composites Part B: Engineering　179　107463-107463　2019/12
Publisher: Elsevier BV
DOI： 10.1016/j.compositesb.2019.107463 　

ISSN： 1359-8368
Thermal expansion behaviors of few-layered graphene-reinforced Al matrix composites Peer-reviewed

Zhou Weiwei, Chen Chao, Mikulova Pavlina, Dong Mingqi, Fan Yuchi, Kikuchi Keiko, Nomura Naoyuki, Kawasaki Akira

JOURNAL OF ALLOYS AND COMPOUNDS　792　988-993　2019/07/05

DOI： 10.1016/j.jallcom.2019.04.140 　

ISSN： 0925-8388
Interfacial reaction induced efficient load transfer in few-layer graphene reinforced Al matrix composites for high-performance conductor Peer-reviewed

Zhou Weiwei, Mikulova Pavlina, Fan Yuchi, Kikuchi Keiko, Nomura Naoyuki, Kawasaki Akira

COMPOSITES PART B-ENGINEERING　167　93-99　2019/06/15

DOI： 10.1016/j.compositesb.2018.12.018 　

ISSN： 1359-8368
Hierarchical Nanoporous Copper Architectures via 3D Printing Technique for Highly Efficient Catalysts Peer-reviewed

Yongzheng Zhang, Xiaohao Sun, Naoyuki Nomura, Takeshi Fujita

SMALL　15　(22)　2019/05

DOI： 10.1002/smll.201805432 　

ISSN： 1613-6810

eISSN： 1613-6829
Uniform dispersion of SiC in Yb-filled skutterudite nanocomposites with high thermoelectric and mechanical performance Peer-reviewed

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

SCRIPTA MATERIALIA　162　166-171　2019/03/15

DOI： 10.1016/j.scriptamat.2018.11.015 　

ISSN： 1359-6462
In situ formation of uniformly dispersed Al4C3 nanorods during additive manufacturing of graphene oxide/Al mixed powders Peer-reviewed

Zhou Weiwei, Dong Mingqi, Zhou Zhengxin, Sun Xiaohao, Kikuchi Keiko, Nomura Naoyuki, Kawasaki Akira

CARBON　141　67-75　2019/01

DOI： 10.1016/j.carbon.2018.09.057 　

ISSN： 0008-6223
Powder fabrication and laser additive manufacturing of MoSiBTiC alloy Peer-reviewed

Weiwei Zhou, Xiaohao Sun, Kengo Tsunoda, Keiko Kikuchi, Naoyuki Nomura, Kyosuke Yoshimi, Akira Kawasaki

Intermetallics　104　33-42　2019/01

DOI： 10.1016/j.intermet.2018.10.012 　

ISSN： 0966-9795
Creation of individual few-layer graphene incorporated in an aluminum matrix Peer-reviewed

Weiwei Zhou, Yuchi Fan, Xiaopeng Feng, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki

Composites Part A: Applied Science and Manufacturing　112　168-177　2018/09/01

DOI： 10.1016/j.compositesa.2018.06.008 　

ISSN： 1359-835X
Effects of cold swaging on mechanical properties and magnetic susceptibility of the Zr–1Mo alloy Peer-reviewed

Maki Ashida, Masahiro Morita, Yusuke Tsutsumi, Naoyuki Nomura, Hisashi Doi, Peng Chen, Takao Hanawa

Metals　8　(6)　454　2018/06/13

DOI： 10.3390/met8060454 　

ISSN： 2075-4701
Effect of heat-treatment temperature on microstructures and mechanical properties of Co–Cr–Mo alloys fabricated by selective laser melting Peer-reviewed

Yuka Kajima, Atsushi Takaichi, Nuttaphon Kittikundecha, Takayuki Nakamoto, Takahiro Kimura, Naoyuki Nomura, Akira Kawasaki, Takao Hanawa, Hidekazu Takahashi, Noriyuki Wakabayashi

Materials Science and Engineering A　726　21-31　2018/05/30

DOI： 10.1016/j.msea.2018.04.048 　

ISSN： 0921-5093
In situ synthesized TiC/Mo-based composites via laser powder bed fusion Peer-reviewed

Weiwei Zhou, Xiaohao Sun, Keiko Kikuchi, Naoyuki Nomura, Kyosuke Yoshimi, Akira Kawasaki

Materials & Design　146　116-124　2018/05

DOI： 10.1016/j.matdes.2018.03.001 　

ISSN： 0264-1275
レーザー積層造形法で製作したCo-Cr-Mo合金への熱処理が組織および機械的性質に与える影響

加嶋祐佳, 高市敦士, キットクンダシャー・ナタポン, 中本貴之, 野村直之, 塙隆夫, 高橋英和, 若林則幸, 川崎亮

日本歯科理工学会誌　37　(Special Issue71)　88-88　2018/03
Publisher: (一社)日本歯科理工学会
ISSN： 1884-4421
Preparation of monophasic titanium sub-oxides of Magnéli phase with enhanced thermoelectric performance Peer-reviewed

Yuchi Fan, Xiaopeng Feng, Weiwei Zhou, Shou Murakami, Keiko Kikuchi, Naoyuki Nomura, Lianjun Wang, Wan Jiang, Akira Kawasaki

Journal of the European Ceramic Society　38　(2)　507-513　2018/02/01

DOI： 10.1016/j.jeurceramsoc.2017.09.040 　

ISSN： 1873-619X 0955-2219
Effect of adding support structures for overhanging part on fatigue strength in selective laser melting Peer-reviewed

Yuka Kajima, Atsushi Takaichi, Takayuki Nakamoto, Takahiro Kimura, Nuttaphon Kittikundecha, Yusuke Tsutsumi, Naoyuki Nomura, Akira Kawasaki, Hidekazu Takahashi, Takao Hanawa, Noriyuki Wakabayashi

Journal of the Mechanical Behavior of Biomedical Materials　78　1-9　2018/02/01

DOI： 10.1016/j.jmbbm.2017.11.009 　

ISSN： 1878-0180 1751-6161
Fabrication of optical gratings through surface patterning of zirconium-based metallic glass by laser irradiation Peer-reviewed

Rui Yamada, Naoyuki Nomura, Junji Saida, Akira Kawasaki

Intermetallics　93　377-382　2018/02/01

DOI： 10.1016/j.intermet.2017.11.003 　

ISSN： 0966-9795
Feasibility Study on Additive Manufacturing of Liquid Rocket Combustion Chamber Peer-reviewed

Shinichi MORIYA, Takuma INOUE, Masahiro SASAKI, Takayuki NAKAMOTO, Takahiro KIMURA, Naoyuki NOMURA, Keiko KIKUCHI, Akira KAWASAKI, Toshiki KATO, Ideo Masuda

Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan　16　(3)　261-266　2018

DOI： 10.2322/tastj.16.261 　
Effects of nanocrystallisation on saturation magnetisation of amorphous Fe76Si9B10P5 Peer-reviewed

Noriharu Yodoshi, Shunpei Ookawa, Rui Yamada, Naoyuki Nomura, Keiko Kikuchi, Akira Kawasaki

MATERIALS RESEARCH LETTERS　6　(1)　100-105　2018

DOI： 10.1080/21663831.2017.1398191 　

ISSN： 2166-3831
Carbon nanotubes as a unique agent to fabricate nanoceramic/metal composite powders for additive manufacturing Peer-reviewed

Weiwei Zhou, Xiaohao Sun, Keiko Kikuchi, Naoyuki Nomura, Kyosuke Yoshimi, Akira Kawasaki

MATERIALS & DESIGN　137　276-285　2018/01

DOI： 10.1016/j.matdes.2017.10.034 　

ISSN： 0264-1275

eISSN： 1873-4197
Selective oxidation/crystallization and their patterning on metallic glass by laser irradiation Peer-reviewed

Rui Yamada, Naoyuki Nomura, Junji Saida, Akira Kawasaki

JOURNAL OF ALLOYS AND COMPOUNDS　727　549-554　2017/12

DOI： 10.1016/j.jallcom.2017.08.202 　

ISSN： 0925-8388

eISSN： 1873-4669
Fabrication and Characterization of a Low Magnetic Zr-1Mo Alloy by Powder Bed Fusion Using a Fiber Laser Peer-reviewed

Xiaohao Sun, Weiwei Zhou, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

METALS　7　(11)　501　2017/11

DOI： 10.3390/met7110501 　

ISSN： 2075-4701
レーザー積層造形法で製作したコバルトクロム合金の異方性制御に有効な熱処理条件の検討

加嶋祐佳, 高市敦士, 中本貴之, ナタポン・キットクンダシャー, 野村直之, 高橋英和, 塙隆夫, 若林則幸, 川崎亮

日本歯科理工学会誌　36　(5)　344-344　2017/09
Publisher: (一社)日本歯科理工学会
ISSN： 1884-4421
レーザー積層造形法においてオーバーハング部へのサポート構造の付与が疲労強度に与える影響

高市敦士, 加嶋祐佳, 中本貴之, 堤祐介, 野村直之, 高橋英和, 塙隆夫, 若林則幸

日本歯科理工学会誌　36　(5)　372-372　2017/09
Publisher: (一社)日本歯科理工学会
ISSN： 1884-4421
Synthesis of n-type Mg2Si/CNT Thermoelectric Nanofibers Peer-reviewed

Keiko Kikuchi, Kodai Yamamoto, Naoyuki Nomura, Akira Kawasaki

NANOSCALE RESEARCH LETTERS　12　(343)　1-6　2017/05

DOI： 10.1186/s11671-017-2120-y 　

ISSN： 1556-276X
Graphene promoted oxygen vacancies in perovskite for enhanced thermoelectric properties Peer-reviewed

Xiaopeng Feng, Yuchi Fan, Naoyuki Nomura, Keiko Kikuchi, Lianjun Wang, Wan Jiang, Akira Kawasaki

CARBON　112　169-176　2017/02

DOI： 10.1016/j.carbon.2016.11.012 　

ISSN： 0008-6223

eISSN： 1873-3891
Effectively enhanced load transfer by interfacial reactions in multi-walled carbon nanotube reinforced Al matrix composites Peer-reviewed

Weiwei Zhou, Tatsuya Yamaguchi, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki

ACTA MATERIALIA　125　369-376　2017/02

DOI： 10.1016/j.actamat.2016.12.022 　

ISSN： 1359-6454

eISSN： 1873-2453
Magnetic susceptibility, artifact volume in MRI, and tensile properties of swaged Zr-Ag composites for biomedical applications Peer-reviewed

Haruki Imai, Yoji Tanaka, Naoyuki Nomura, Hisashi Doi, Yusuke Tsutsumi, Takashi Ono, Takao Hanawa

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS　66　152-158　2017/02

DOI： 10.1016/j.jmbbm.2016.11.011 　

ISSN： 1751-6161

eISSN： 1878-0180
Magnetic susceptibility, artifact volume in MRI, and tensile properties of swaged Zr–Ag composites for biomedical applications Peer-reviewed

Haruki Imai, Yoji Tanak⁠a, Naoyuki Nomura, Hisashi Doi, Yusuke Tsutsumi, Takashi Ono, Takao Hanawa

Journal of the Mechanical Behavior of Biomedical Materials　66　152-158　2016/11

DOI： 10.1016./j.jmbbm.2016.11.011 　
Effect of Ta content on the magnetic susceptibility of Zr-Ta binary alloys previnting artetfacts for MRI Peer-reviewed

Akane Takaku Tsuno, Yuta Tanaka, Ryota Kondo, Naoyuki Nomura, Yususke Tsutsumi, Takao Hanawa

Advances in Materials and Processing Technologies　2　(4)　606-614　2016/10/26

DOI： 10.1080/2374068X.2016.1247336 　
Microstructures and mechanical properties of selective laser-melted metals with different processed powder Peer-reviewed

Naoyuki Nomura, Keiko Kikuchi, Akira Kawasaki

World PM2016 proceedings　2016/10

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World PM2016 Congress and Exhibition, 9-13 October 2016, Hamburg, Germany ISBN: 978-1-899072-48-4
Titanium-Zirconium Binary Alloy as Dental Implant Material: Analysis of the Influence of Compositional Change on Mechanical Properties and In Vitro Biologic Response. Peer-reviewed

Tsunglin James Lee, Takeshi Ueno, Naoyuki Nomura, Noriyuki Wakabayashi, Takao Hanawa

Int J Oral Maxillofac Implants　31　(3)　547-554　2016/06

ISSN： 1942-4434

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To evaluate the mechanical properties and biologic response of single-phase Ti-Zr alloys cast in higher-purity casting conditions, with comprehensive compositions (from 10 to 90 mol% of Zr). The mechanical properties and in vitro biologic response with proportional increase of Zr to Ti-Zr alloy composition were assessed. Tensile strength, surface hardness, and Young's modulus were examined. The in vitro cell response of the alloys was also tested with mouse osteoblast cells. Analyses of mechanical tests demonstrated improved strength and reduced Young's modulus on this binary alloy system. In vitro cell culture studies with osteogenic MCT3T-E1 cells exhibited the highest attachment rate with the largest and more mature cells on Ti10Zr, instead of commercially pure Ti, whereas a significantly lower cell attachment rate and delayed alkaline phosphatase-specific activity (ALP) differentiation were detected on Ti50Zr. The results revealed that the composition did have an impact on the in vitro biologic response. Ti-Zr alloys with 50-50 mol% composition had a decreased biologic response, although the mechanical properties improved. The overall highest strength was Ti with 30 mol% Zr wit
Fatigue strength of Co-Cr-Mo alloy clasps prepared by selective laser melting Peer-reviewed

Yuka Kajima, Atsushi Takaichi, Takayuki Nakamoto, Takahiro Kimura, Yoshiaki Yogo, Maki Ashida, Hisashi Doi, Naoyuki Nomura, Hidekazu Takahashi, Takao Hanawa, Noriyuki Wakabayashi

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS　59　446-458　2016/06

DOI： 10.1016/j.jmbbm.2016.02.032 　

ISSN： 1751-6161

eISSN： 1878-0180
Titanium-Zirconium Binary Alloy as Dental Implant Material: Analysis of the Influence of Compositional Change on Mechanical Properties and In Vitro Biologic Response Peer-reviewed

Tsunglin James Lee, Takeshi Ueno, Naoyuki Nomura, Noriyuki Wakabayashi, Takao Hanawa

INTERNATIONAL JOURNAL OF ORAL & MAXILLOFACIAL IMPLANTS　31　(3)　547-554　2016/05

DOI： 10.11607/jomi.4349 　

ISSN： 0882-2786

eISSN： 1942-4434
Effect of Cr and N on mechanical properties and corrosion resistance of Co-Cr-Mo alloy for dental casting Peer-reviewed

Hisashi DOI, Maki ASHIDA, Yusuke TSUTSUMI, Naoyuki NOMURA, Takao HANAWA

The Journal of the Japanese Society for Dental Materials and Devices　35　(3)　217-225　2016/05
Publisher: The Japanese Society for Dental Materials and Devices
DOI： 10.18939/jsdmd.35.3_217 　

ISSN： 1884-4421

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The Co-Cr-Mo alloy is widely applied as a biocompatible metal, because it shows excellent strength and corrosion resistance. Especially, cobalt-chromium alloy of various types has been practically used as an alloy for dental casting. By increasing the N concentration of this alloy, the mechanical properties were improved. In addition, detailed examination also seems to be necessary on the characteristics as the concentration of Cr increases. In this study, mechanical properties and corrosion resistance were considered using a tensile test and an elution test in 1％ lactic acid when N and Cr concentrations of the Co-Cr-Mo alloy were changed. As a result, the ductility was rapidly improved in 0.2〜0.4 mass％ N alloy. Also, as the Cr concentration increased from 32 mass％, the strength increased but it became brittle when it exceeded 36％. Regarding the corrosion resistance, there was no effect of the concentration of N or Cr.
レーザー積層造形法により製作したコバルトクロム合金の組織と機械的性質に及ぼす熱処理の影響

余語良章, 加嶋祐佳, 高市敦士, 中本貴之, 土居壽, 高橋英和, 野村直之, 塙隆夫, 若林則幸

日本歯科理工学会誌　35　(2)　168-168　2016/03
Publisher: (一社)日本歯科理工学会
ISSN： 1884-4421
Effect of Heat Treatment and the Fabrication Process on Mechanical Properties of Zr-14Nb Alloy Peer-reviewed

Ryota Kondo, Naoyuki Nomura, Hisashi Doi, Hiroaki Matsuinoto, Yusuke Tsutsumi, Takao Hanawa

MATERIALS TRANSACTIONS　57　(12)　2060-2064　2016

DOI： 10.2320/matertrans.MI201512 　

ISSN： 1345-9678

eISSN： 1347-5320
Surface Composition and Corrosion Resistance of Co-Cr Alloys Containing High Chromium Peer-reviewed

Yusuke Tsustumi, Hisashi Doi, Naoyuki. Nomura, Maki Ashida, Peng Chen, Akira K. Awasaki, Takao Hanawa

MATERIALS TRANSACTIONS　57　(12)　2033-2040　2016

DOI： 10.2320/matertrans.MI201514 　

ISSN： 1345-9678

eISSN： 1347-5320
Microstructure and Mechanical Properties of Large-Scale Ingots of the Zr-1Mo Alloy Peer-reviewed

Maki Ashida, Tomohiro Sugimoto, Naoyuki Nomura, Yusuke Tsutsumi, Peng Chen, Hisashi Doi, Takao Hanawa

MATERIALS TRANSACTIONS　56　(9)　1544-1548　2015/09

DOI： 10.2320/matertrans.M2015098 　

ISSN： 1345-9678

eISSN： 1347-5320
FABRICATION OF TITANIUM ALLOY FRAMEWORKS FOR COMPLETE DENTURES BY SELECTIVE LASER MELTING Peer-reviewed

Manabu Kanazawa, Maiko Iwaki, Shunsuke Minakuchi, Naoyuki Nomura

JOURNAL OF PROSTHETIC DENTISTRY　112　(6)　1441-1447　2014/12

DOI： 10.1016/j.prosdent.2014.06.017 　

ISSN： 0022-3913

eISSN： 1097-6841
Correlation between cyclic fatigue and the bending properties of nickel titanium endodontic instruments Peer-reviewed

Jindan Pia, Kana Miyara, Arata Ebihara, Naoyuki Nomura, Takao Hanawa, Hideaki Suda

DENTAL MATERIALS JOURNAL　33　(4)　539-544　2014/08

DOI： 10.4012/dmj.2013-318 　

ISSN： 0287-4547
Endodontic Instruments After Torsional Failure: Nanoindentation Test Peer-reviewed

Ahmed Jamleh, Alireza Sadr, Naoyuki Nomura, Arata Ebihara, Yoshio Yahata, Takao Hanawa, Junji Tagami, Hideaki Suda

SCANNING　36　(4)　437-443　2014/07

DOI： 10.1002/sca.21139 　

ISSN： 0161-0457

eISSN： 1932-8745
Three-dimensional quantification of susceptibility artifacts from various metals in magnetic resonance images Peer-reviewed

Haruki Imai, Yoji Tanaka, Naoyuki Nomura, Yusuke Tsutsumi, Hisashi Doi, Zuisei Kanno, Kikuo Ohno, Takashi Ono, Takao Hanawa

ACTA BIOMATERIALIA　9　(9)　8433-8439　2013/09

DOI： 10.1016/j.actbio.2013.05.017 　

ISSN： 1742-7061
Microstructures and mechanical properties of Co-29Cr-6Mo alloy fabricated by selective laser melting process for dental applications Peer-reviewed

Atsushi Takaichi, Suyalatu, Takayuki Nakamoto, Natsuka Joko, Naoyuki Nomura, Yusuke Tsutsumi, Satoshi Migita, Hisashi Doi, Shingo Kurosu, Akihiko Chiba, Noriyuki Wakabayashi, Yoshimasa Igarashi, Takao Hanawa

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS　21　67-76　2013/05

DOI： 10.1016/j.jmbbm.2013.01.021 　

ISSN： 1751-6161
Effect of cold rolling on the magnetic susceptibility of Zr-14Nb alloy Peer-reviewed

Kondo, Ryota, Shimizu, Ryota, Nomura, Naoyuki, Doi, Hisashi, Suyalatu, Tsutsumi, Yusuke, Mitsuishi, Kazutaka, Shimojo, Masayuki, Noda, Kazuhiko, Hanawa, Takao

ACTA BIOMATERIALIA　9　(3)　5795-5801　2013/03

DOI： 10.1016/j.actbio.2012.10.046 　

ISSN： 1742-7061

eISSN： 1878-7568
Enhancement of calcium phosphate formation on zirconium by combination of simple electrochemical treatments Peer-reviewed

Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Kyo-Han Kim, Takao Hanawa

Key Engineering Materials　529-530　(1)　565-569　2013

DOI： 10.4028/www.scientific.net/KEM.529-530.565 　

ISSN： 1013-9826
Accelerated Calcium Phosphate Formation on Titanium Utilizing Galvanic Current between Titanium and Gold in Hanks' Solution Peer-reviewed

Yusuke Tsutsumi, Equo Kobayashi, Masakimi Ogo, Suyalatu, Satoshi Migita, Hisashi Doi, Naoyuki Nomura, Kazuhiko Noda, Takao Hanawa

MATERIALS TRANSACTIONS　54　(2)　149-155　2013

DOI： 10.2320/matertrans.MC201204 　

ISSN： 1345-9678

eISSN： 1347-5320
Cooling rate and composition dependences of magnetic susceptibility for Zr54-xCu30+xAl8Ag8 glassy alloys Peer-reviewed

Ichiro Seki, Rie Y. Umetsu, Guo-Qiang Xie, Naoyuki Nomura, Xin-Min Wang, Takao Hanawa

Materials Transactions　54　(8)　1356-1360　2013

DOI： 10.2320/matertrans.MF201306 　

ISSN： 1345-9678
Micro-arc oxidation treatment to improve the hard-tissue compatibility of Ti-29Nb-13Ta-4.6Zr alloy Peer-reviewed

Yusuke Tsutsumi, Mitsuo Niinomi, Masaaki Nakai, Harumi Tsutsumi, Hisashi Doi, Naoyuki Nomura, Takao Hanawa

APPLIED SURFACE SCIENCE　262　34-38　2012/12

DOI： 10.1016/j.apsusc.2012.01.024 　

ISSN： 0169-4332
Effects of chromium and nitrogen content on the microstructures and mechanical properties of as-cast Co-Cr-Mo alloys for dental applications Peer-reviewed

Keita Yoda, Suyalatu, Atsushi Takaichi, Naoyuki Nomura, Yusuke Tsutsumi, Hisashi Doi, Shingo Kurosu, Akihiko Chiba, Yoshimasa Igarashi, Takao Hanawa

ACTA BIOMATERIALIA　8　(7)　2856-2862　2012/07

DOI： 10.1016/j.actbio.2012.03.024 　

ISSN： 1742-7061
Nano-indentation testing of new and fractured nickel-titanium endodontic instruments Peer-reviewed

A. Jamleh, A. Sadr, N. Nomura, Y. Yahata, A. Ebihara, T. Hanawa, J. Tagami, H. Suda

INTERNATIONAL ENDODONTIC JOURNAL　45　(5)　462-468　2012/05

DOI： 10.1111/j.1365-2591.2011.01997.x 　

ISSN： 0143-2885

eISSN： 1365-2591
Long-Term Corrosion Behavior of Biocompatible beta-Type Ti Alloy in Simulated Body Fluid Peer-reviewed

Y. Tsutsumi, S. Bartakova, P. Prachar, Suyalatu, S. Migita, H. Doi, N. Nomura, T. Hanawa

JOURNAL OF THE ELECTROCHEMICAL SOCIETY　159　(10)　C435-C440　2012

DOI： 10.1149/2.045210jes 　

ISSN： 0013-4651
Effects of phase constitution on magnetic susceptibility and mechanical properties of Zr-rich Zr-Mo alloys Peer-reviewed

Suyalatu, Ryota Kondo, Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Takao Hanawa

ACTA BIOMATERIALIA　7　(12)　4259-4266　2011/12

DOI： 10.1016/j.actbio.2011.07.005 　

ISSN： 1742-7061
Microstructure and mechanical properties of as-cast Zr-Nb alloys Peer-reviewed

Ryota Kondo, Naoyuki Nomura, Suyalatu, Yusuke Tsutsumi, Hisashi Doi, Takao Hanawa

ACTA BIOMATERIALIA　7　(12)　4278-4284　2011/12

DOI： 10.1016/j.actbio.2011.07.020 　

ISSN： 1742-7061
Synthesis of novel oxide layers on titanium by combination of sputter deposition and micro-arc oxidation techniques Peer-reviewed

Myat Nyan, Yusuke Tsutsumi, Kei Oya, Hisashi Doi, Naoyuki Nomura, Shohei Kasugai, Takao Hanawa

DENTAL MATERIALS JOURNAL　30　(5)　754-761　2011/09

DOI： 10.4012/dmj.2011-067 　

ISSN： 0287-4547
Bone healing of commercial oral implants with RGD immobilization through electrodeposited poly(ethylene glycol) in rabbit cancellous bone Peer-reviewed

Jin-Woo Park, Kazuya Kurashima, Yusuke Tustusmi, Chang-Hyeon An, Jo-Young Suh, Hisashi Doi, Naoyuki Nomura, Kazuhiko Noda, Takao Hanawa

ACTA BIOMATERIALIA　7　(8)　3222-3229　2011/08

DOI： 10.1016/j.actbio.2011.04.015 　

ISSN： 1742-7061

eISSN： 1878-7568
Enhancement of calcium phosphate formation on zirconium by micro-arc oxidation and chemical treatments Peer-reviewed

Jung-Yun Ha, Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Kyo-Han Kim, Takao Hanawa

SURFACE & COATINGS TECHNOLOGY　205　(21-22)　4948-4955　2011/08

DOI： 10.1016/j.surfcoat.2011.04.079 　

ISSN： 0257-8972
Microstructure and mechanical properties of Pt-added and Pd-added Zr-20Nb alloys and their metal release in 1 mass% lactic acid solution Peer-reviewed

R. Kondo, Suyalatu, Y. Tsutsumi, H. Doi, N. Nomura, T. Hanawa

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS　31　(5)　900-905　2011/07

DOI： 10.1016/j.msec.2011.02.008 　

ISSN： 0928-4931
Surface structures and osteoblast response of hydrothermally produced CaTiO3 thin film on Ti-13Nb-13Zr alloy Peer-reviewed

Jin-Woo Park, Yusuke Tustusmi, Chong Soo Lee, Chan Hee Park, Youn-Jeong Kim, Je-Hee Jang, Dongwoo Khang, Yeon-Min Im, Hisashi Doi, Naoyuki Nomura, Takao Hanawa

APPLIED SURFACE SCIENCE　257　(17)　7856-7863　2011/06

DOI： 10.1016/j.apsusc.2011.04.054 　

ISSN： 0169-4332
Effects of pH, Potential, and Deposition Time on the Durability of Collagen Electrodeposited to Titanium Peer-reviewed

Hideki Kamata, Shoichi Suzuki, Yuta Tanaka, Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Takao Hanawa, Keiji Moriyama

MATERIALS TRANSACTIONS　52　(1)　81-89　2011/01

DOI： 10.2320/matertrans.M2010311 　

ISSN： 1345-9678

eISSN： 1347-5320
Effects of electrodeposited poly(ethylene glycol) on biofilm adherence to titanium Peer-reviewed

Yuta Tanaka, Khairul Matin, Mariko Gyo, Ayako Okada, Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Junji Tagami, Takao Hanawa

JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A　95A　(4)　1105-1113　2010/12

DOI： 10.1002/jbm.a.32932 　

ISSN： 1549-3296
Evaluation of the static frictional coefficients of Co-Cr and gold alloys for cone crown telescope denture retainer applications Peer-reviewed

Masahito Ohida, Keita Yoda, Naoyuki Nomura, Takao Hanawa, Yoshimasa Igarashi

DENTAL MATERIALS JOURNAL　29　(6)　706-712　2010/11

DOI： 10.4012/dmj.2010-011 　

ISSN： 0287-4547
Cathodic alkaline treatment of zirconium to give the ability to form calcium phosphate Peer-reviewed

Y. Tsutsumi, D. Nishimura, H. Doi, N. Nomura, T. Hanawa

ACTA BIOMATERIALIA　6　(10)　4161-4166　2010/10

DOI： 10.1016/j.actbio.2010.05.010 　

ISSN： 1742-7061
Differences in the bone differentiation properties of MC3T3-E1 cells on polished bulk and sputter-deposited titanium specimens Peer-reviewed

Kei Dye, Yuta Tanaka, Yoshihisa Moriyama, Yuki Yoshioka, Tsuyoshi Kimura, Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Kazuhiko Noda, Akio Kishida, Takao Hanawa

JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A　94A　(2)　611-618　2010/08

DOI： 10.1002/jbm.a.32751 　

ISSN： 1549-3296
Fabrication and Mechanical Properties of Porous Ti/HA Composites for Bone Fixation Devices Peer-reviewed

Naoyuki Nomura, Kozue Sakamoto, Katsuya Takahashi, Seiji Kato, Yasunori Abe, Hisashi Doi, Yusuke Tsutsumi, Masahiro Kobayashi, Equo Kobayashi, Woo-Jong Kim, Kyo-Han Kim, Takao Hanawa

MATERIALS TRANSACTIONS　51　(8)　1449-1454　2010/08

DOI： 10.2320/matertrans.M2010092 　

ISSN： 1345-9678

eISSN： 1347-5320
Microstructures of Zr-Added Co-Cr-Mo Alloy Compacts Fabricated with a Metal Injection Molding Process and Their Metal Release in 1 mass% Lactic Acid Peer-reviewed

Madoka Murakami, Naoyuki Nomura, Hisashi Doi, Yusuke Tsutsumi, Hidefumi Nakamura, Akihiko Chiba, Takao Hanawa

MATERIALS TRANSACTIONS　51　(7)　1281-1287　2010/07

DOI： 10.2320/matertrans.M2010040 　

ISSN： 1345-9678

eISSN： 1347-5320
Microstructure and magnetic susceptibility of as-cast Zr-Mo alloys Peer-reviewed

Sulayatu, Naoyuki Nomura, Kei Oya, Yuko Tanaka, Ryota Kondo, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

ACTA BIOMATERIALIA　6　(3)　1033-1038　2010/03

DOI： 10.1016/j.actbio.2009.09.013 　

ISSN： 1742-7061

eISSN： 1878-7568
Influence of Cold-Working and Subsequent Heat-Treatment on Young's Modulus and Strength of Co-Ni-Cr-Mo Alloy

Takuma Otomo, Hiroaki Matsumoto, Naoyuki Nomura, Akihiko Chiba

MATERIALS TRANSACTIONS　51　(3)　434-441　2010/03

DOI： 10.2320/matertrans.M2009327 　

ISSN： 1345-9678

eISSN： 1347-5320
Mechanical properties of Zr added cocrmo alloy sintered compact produced by MIM process Peer-reviewed

Hidefumi Nakamura, Yoshimi Sato, Akihiko Chiba, Madoka Murakami, Naoyuki Nomura, Takao Hanawa, Koetsu Abe

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy　57　(2)　118-125　2010/02

DOI： 10.2497/jjspm.57.118 　

ISSN： 0532-8799
Effects of Phase Constitution of Zr-Nb Alloys on Their Magnetic Susceptibilities Peer-reviewed

Naoyuki Nomura, Yuko Tanaka, Suyalatu, Ryota Kondo, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

MATERIALS TRANSACTIONS　50　(10)　2466-2472　2009/10

DOI： 10.2320/matertrans.M2009187 　

ISSN： 1345-9678

eISSN： 1347-5320
Difference in surface reactions between titanium and zirconium in Hanks' solution to elucidate mechanism of calcium phosphate formation on titanium using XPS and cathodic polarization Peer-reviewed

Y. Tsutsumi, D. Nishimura, H. Doi, N. Nomura, T. Hanawa

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS　29　(5)　1702-1708　2009/06

DOI： 10.1016/j.msec.2009.01.016 　

ISSN： 0928-4931
Calcification by MC3T3-E1 cells on RGD peptide immobilized on titanium through electrodeposited PEG Peer-reviewed

Kei Oya, Yuta Tanaka, Haruka Saito, Kazuya Kurashima, Kazuya Nogi, Harumi Tsutsumi, Yusuke Tsutsumi, H. Isashi Doi, Naoyuki Nomura, Takao Hanawa

BIOMATERIALS　30　(7)　1281-1286　2009/03

DOI： 10.1016/j.biomaterials.2008.11.030 　

ISSN： 0142-9612
Hot Semiclosed Die Forging of Ni-Free Co-29Cr-6Mo Alloy into Prototype Arificial Hip Joint Stem Peer-reviewed

Shingo KUROSU, Kenta YAMANAKA, Hiroaki MATSUMOTO, Naoyuki NOMURA, Akihiko Chiba

塑性と加工　50　(3)　256-260　2009/03
Publisher: The Japan Society for Technology of Plasticity
DOI： 10.9773/sosei.50.256 　

ISSN： 0038-1586

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A trial on an artificial hip joint stem made of Ni-free Co-29Cr-6Mo alloy was conducted by an isothermal hot semiclosed die forging method. The hot forging conditions (i.e., sample dimensions, forging temperature and stroke-speed) were determined by process simulation using “DEFORM-3D” based on FEM. A prototype stem with a shape designed using a FEM simulator was successfully obtained without surface defects or flaws under the predetermined forging conditions. The microstructure of the obtained stem consisted of mainly the ε (H.C.P.) phase as well as the minor γ (F.C.C.) and σ(CoCr:P42/mnm) phases. In addition, inhomogeneous distributions of the σ phase and grain size could be observed in the microstructure of the stem, resulting from the inhomogeneous distributions of effective strain rate, effective strain and effective stress induced in the stem during the forging process. Thus, Vickers hardness exhibited marked scattering, depending on the position of the stem.
Influence of Cold-Working and Subsequent Heat-Treatment on Young's Modulus and Strength of Co-Ni-Cr-Mo Alloy Peer-reviewed

Takuma Otomo, Hiroaki Matsumoto, Naoyuki Nomura, Akihiko Chiba

JOURNAL OF THE JAPAN INSTITUTE OF METALS　73　(2)　74-80　2009/02

DOI： 10.2320/jinstmet.73.74 　

ISSN： 0021-4876

eISSN： 1880-6880
Effect of pH on the interaction between zwitterions and titanium oxide Peer-reviewed

Yuta Tanaka, Haruka Saito, Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Hachiro Imai, Takao Hanawa

JOURNAL OF COLLOID AND INTERFACE SCIENCE　330　(1)　138-143　2009/02

DOI： 10.1016/j.jcis.2008.10.042 　

ISSN： 0021-9797
In vitro short-term platelet adhesion on various metals Peer-reviewed

Yuta Tanaka, Kazuya Kurashima, Haruka Saito, Akiko Nagai, Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Takao Hanawa

JOURNAL OF ARTIFICIAL ORGANS　12　(3)　182-186　2009

DOI： 10.1007/s10047-009-0468-1 　

ISSN： 1434-7229
Effects of Phase Constitution of Zr-Nb and Zr-Mo Alloys on Their Magnetic Susceptibilities to Prevent Artifacts in MRI Peer-reviewed

Naoyuki Nomura, Yuko Tanaka, Suyalatu, Ryota Kondo, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

Processing and Fabrication of Advanced Materials XVIII　3　1205-1214　2009
Effect of Pd Addition to Zr-Nb Alloys on the Corrosion Resistance and Mechanical Properties Peer-reviewed

Ryota Kondo, Suyalatu, Hisashi Doi, Yusuke Tsutsumi, Naoyuki Nomura, Takao Hanawa

Processing and Fabrication of Advanced Materials XVIII　3　1205-1214　2009
Effect of Nitrogen Content on Microstructure of Hot-Pressed Co-Cr-Mo Alloy Compacts for Biomedical Applications Peer-reviewed

Yoshimi Sato, Naoyuki Nomura, Akihiko Chiba

JOURNAL OF THE JAPAN INSTITUTE OF METALS　72　(11)　875-880　2008/11

DOI： 10.2320/jinstmet.72.875 　

ISSN： 0021-4876

eISSN： 1880-6880
Microstructure and tensile properties of hot-pressed co-cr-mo alloy compacts for biomedical applications Peer-reviewed

Yoshimi Sato, Naoyuki Nomura, Shigeo Fujinuma, Akihiko Chiba

JOURNAL OF THE JAPAN INSTITUTE OF METALS　72　(7)　532-537　2008/07

DOI： 10.2320/jinstmet.72.532 　

ISSN： 0021-4876

eISSN： 1880-6880
Significant improvement in mechanical properties of biomedical Co-Cr-Mo alloys with combination of N addition and Cr-enrichment Peer-reviewed

Sang-Hak Lee, Naoyuki Nomura, Akihiko Chiba

MATERIALS TRANSACTIONS　49　(2)　260-264　2008/02

DOI： 10.2320/matertrans.MRA2007220 　

ISSN： 1345-9678

eISSN： 1347-5320
Effect of Fe addition on microstructures and mechanical properties of Ni- and C-free Co-Cr-Mo alloys Peer-reviewed

Sang-Hak Lee, Naoyuki Nomura, Akihiko Chiba

MATERIALS TRANSACTIONS　48　(8)　2207-2211　2007/08

DOI： 10.2320/matertrans.MRA2007004 　

ISSN： 1345-9678

eISSN： 1347-5320
Cytocompatibility for Co-Cr-Mo alloy with a small amount of zirconium or carbon Peer-reviewed

Yasuko Numata, Bunei Syuto, Naoyuki Nomura, Akihiko Chiba

JOURNAL OF THE JAPAN INSTITUTE OF METALS　71　(7)　578-585　2007/07

DOI： 10.2320/jinstmet.71.578 　

ISSN： 0021-4876

eISSN： 1880-6880
Effect of dissolved oxygen content on pin-on-disc wear Behavior of biomedical Co-Cr-Mo alloys in a like-on-like configuration in distilled water Peer-reviewed

Kazushige Kumagai, Naoyuki Nomura, Akihiko Chiba

MATERIALS TRANSACTIONS　48　(6)　1511-1516　2007/06

DOI： 10.2320/matertrans.MRA2007601 　

ISSN： 1345-9678

eISSN： 1347-5320
Microstructure and mechanical properties of Co-29Cr-Wo alloy aged at 1023K Peer-reviewed

Shingo Kurosu, Naoyuki Nomura, Akihiko Chiba

MATERIALS TRANSACTIONS　48　(6)　1517-1522　2007/06

DOI： 10.2320/matertrans.MRA2007606 　

ISSN： 1345-9678

eISSN： 1347-5320
Effects of zirconium addition on microstructures and mechanical properties of Co-29Cr-6Mo alloy Peer-reviewed

Sang-Hak Lee, Tomo Uchikanezaki, Naoyuki Nomura, Mitsuru Nakamura, Akihiko Chiba

MATERIALS TRANSACTIONS　48　(5)　1084-1088　2007/05

DOI： 10.2320/matertrans.48.1084 　

ISSN： 1345-9678

eISSN： 1347-5320
Microstructure and mechanical properties of biomedical Co-29Cr-Mo alloy wire fabricated by a modified melt-spinning process Peer-reviewed

Akihiko Chiba, Naoyuki Nomura, Yoshiki Ono

ACTA MATERIALIA　55　(6)　2119-2128　2007/04

DOI： 10.1016/j.actamat.2006.10.060 　

ISSN： 1359-6454
Pin-on-disk wear behavior in a like-on-like configuration in a biological environment of high carbon cast and low carbon forged Co-29Cr-6Mo alloys Peer-reviewed

Akihiko Chiba, Kazushige Kumagai, Naoyuki Nomura, Satoru Miyakawa

ACTA MATERIALIA　55　(4)　1309-1318　2007/02

DOI： 10.1016/j.actamat.2006.10.005 　

ISSN： 1359-6454
Mechanical properties of porous titanium compacts reinforced by UHMWPE Peer-reviewed

N. Nomura, Y. BaBa, A. Kawamura, S. Fujinuma, A. Chiba, N. Masahashi, S. Hanada

Materials Science Forum　539-543　(PART 1)　1033-1037　2007

DOI： 10.4028/0-87849-428-6.1033 　

ISSN： 0255-5476

eISSN： 1662-9752
Osteoconductivity of porous titanium having young's modulus similar to bone and surface modification by OCP Peer-reviewed

Yuko Suzuki, Naoyuki Nomura, Shuji Hanada, Shinji Kamakura, Takahisa Anada, Takeshi Fuji, Yoshitomo Honda, Taisuke Masuda, Keiichi Sasaki, Shoichi Kokubun, Osamu Suzuki

Key Engineering Materials　330-332 II　951-954　2007

DOI： 10.4028/0-87849-422-7.951 　

ISSN： 1013-9826

eISSN： 1662-9795
Effect of sigma phase in Co-29Cr-6Mo alloy on corrosion and mechanical properties Peer-reviewed

Shingo Kurosu, Naoyuki Nomura, Akihiko Chiba

Advanced Materials Research　24-25　777-780　2007

DOI： 10.4028/0-87849-463-4.777 　

ISSN： 1022-6680
Microstructure and mechanical properties of Hot-Pressed Co-Cr-Mo alloy compacts Peer-reviewed

Yoshimi Sato, Naoyuki Nomura, Shigeo Fujinuma, Akihiko Chiba

Advanced Materials Research　24-25　769-772　2007

DOI： 10.4028/0-87849-463-4.769 　

ISSN： 1022-6680
Effect of nitrogen on microstructure of porous CoCrMo alloy compacts for biomedical applications Peer-reviewed

Naoyuki Nomura, Mariko Abe, Sang Hak Lee, Akihiko Chiba

Materials Science Forum　561-565　(PART 2)　1501-1504　2007

DOI： 10.4028/0-87849-462-6.1501 　

ISSN： 0255-5476

eISSN： 1662-9752
Mechanical Properties of Porous β-Ti Compacts for Biomedical Applications Peer-reviewed

Naoyuki Nomura, Hiroaki Matsumoto, Akihiko Chiba, Naoya Masahashi, Shuji Hanada

Ti2007 Science and Technology (JIMIC5)　2　1485-1488　2007
Ti-Nb-Sn and Ti-V-Sn Alloys with Low Young’s Modulus and High Strength Peer-reviewed

Hiroaki Matsumoto, Naoyuki Nomura, Akihiko Chiba, Naoya Masahashi, Shuji Hanada

Ti2007 Science and Technology (JIMIC5)　2　1033-1037　2007
Effect of iron addition on Co-29Cr-6Mo alloys for biomedical applications Peer-reviewed

Sang Hak Lee, Hisae Chiba, Bunei Syuto, Naoyuki Nomura, Akihiko Chiba

Materials Science Forum　561-565　(PART 2)　1497-1500　2007

DOI： 10.4028/0-87849-462-6.1497 　

ISSN： 0255-5476

eISSN： 1662-9752
Effect of sigma phase in Co-29Cr-6Mo alloy on corrosion behavior in saline solution Peer-reviewed

Shingo Kurosu, Naoyuki Nomura, Akihiko Chiba

MATERIALS TRANSACTIONS　47　(8)　1961-1964　2006/08

DOI： 10.2320/matertrans.47.1961 　

ISSN： 1345-9678

eISSN： 1347-5320
Fabrication of gas atomized Co-Cr-Mo alloy powder and microstructure of the hot-pressed compacts Peer-reviewed

Yoshimi Sato, Naoyuki Nomura, Shigeo Fujinuma, Akihiko Chiba

JOURNAL OF THE JAPAN INSTITUTE OF METALS　70　(4)　275-280　2006/04

DOI： 10.2320/jinstmet.70.275 　

ISSN： 0021-4876

eISSN： 1880-6880
Fabrication of porous Co-Cr-Mo compacts prepared by spark plasma sintering for biomedical applications Peer-reviewed

Naoyuki Nomura, Masako Utsuhashi, Mariko Abe, Tsukasa Ono, Akihiko Chiba

JOURNAL OF THE JAPAN INSTITUTE OF METALS　70　(4)　281-286　2006/04

DOI： 10.2320/jinstmet.70.281 　

ISSN： 0021-4876

eISSN： 1880-6880
Effect of heat treatment on microstructure and mechanical properties of Ni- and C-free Co-Cr-Mo alloys for medical applications

Sang-Hak Lee, Eiji Takahashi, Naoyuki Nomura, Akihiko Chiba

JOURNAL OF THE JAPAN INSTITUTE OF METALS　70　(4)　260-264　2006/04

DOI： 10.2320/jinstmet.70.260 　

ISSN： 0021-4876

eISSN： 1880-6880
Dry friction and wear behavior of forged Co-29Cr-6Mo alloy without Ni and C additions for implant applications

Kazushige Kumagai, Naoyuki Nomura, Tsukasa Ono, Masahiro Hotta, Akihiko Chiba

JOURNAL OF THE JAPAN INSTITUTE OF METALS　70　(4)　265-274　2006/04

DOI： 10.2320/jinstmet.70.265 　

ISSN： 0021-4876

eISSN： 1880-6880
Fabrication and mechanical properties of porous Co-Cr-Mo alloy compacts without Ni addition Peer-reviewed

N Nomura, M Abe, A Kawamura, S Fujinuma, A Chiba, N Masahashi, S Hanada

MATERIALS TRANSACTIONS　47　(2)　283-286　2006/02

DOI： 10.2320/matertrans.47.283 　

ISSN： 1345-9678

eISSN： 1347-5320
Effect of carbon addition on microstructure and mechanical properties of a wrought Co-Cr-Mo implant alloy Peer-reviewed

SH Lee, E Takahashi, N Nomura, A Chiba

MATERIALS TRANSACTIONS　47　(2)　287-290　2006/02

DOI： 10.2320/matertrans.47.287 　

ISSN： 1345-9678

eISSN： 1347-5320
Effects of a Co-29Cr-6Mo alloy on cultured cells Peer-reviewed

Y Numata, B Syuto, N Nomura, A Chiba

JOURNAL OF THE JAPAN INSTITUTE OF METALS　70　(2)　142-145　2006/02

DOI： 10.2320/jinstmet.70.142 　

ISSN： 0021-4876

eISSN： 1880-6880
Effects of 5th element addition to Co-29Cr-6Mo alloy containing impurity Ni on metal ion release Peer-reviewed

S Kurosu, N Nomura, K Yamaguchi, S Fujinuma, A Chiba

JOURNAL OF THE JAPAN INSTITUTE OF METALS　69　(10)　886-891　2005/10

DOI： 10.2320/jinstmet.69.886 　

ISSN： 0021-4876

eISSN： 1880-6880
Effect of heat treatment on microstructure and mechanical properties of Ni- and C-free Co-Cr-Mo alloys for medical applications Peer-reviewed

SH Lee, E Takahashi, N Nomura, A Chiba

MATERIALS TRANSACTIONS　46　(8)　1790-1793　2005/08

DOI： 10.2320/matertrans.46.1790 　

ISSN： 1345-9678

eISSN： 1347-5320
Laminates based on an iron aluminide intermetallic alloy and a CrMo steel Peer-reviewed

N Masahashi, S Watanabe, N Nomura, S Semboshi, S Hanada

INTERMETALLICS　13　(7)　717-726　2005/07

DOI： 10.1016/j.intermet.2004.12.017 　

ISSN： 0966-9795
Microstructures and bond strengths of plasma-sprayed hydroxyapatite coatings on porous titanium substrates Peer-reviewed

IK Oh, N Nomura, A Chiba, Y Murayama, N Masahashi, BT Lee, S Hanada

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE　16　(7)　635-640　2005/07

DOI： 10.1007/s10856-005-2534-4 　

ISSN： 0957-4530
Dry friction and wear Behavior of forged Co-29Cr-6Mo alloy without Ni and C additions for implant applications Peer-reviewed

K Kumagai, N Nomura, T Ono, M Hotta, A Chiba

MATERIALS TRANSACTIONS　46　(7)　1578-1587　2005/07

DOI： 10.2320/matertrans.46.1578 　

ISSN： 1345-9678

eISSN： 1347-5320
Mechanical properties of porous Ti-15Mo-5Zr-3Al compacts prepared by powder sintering Peer-reviewed

N Nomura, T Kohama, IH Oh, S Hanada, A Chiba, M Kanehira, K Sasaki

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS　25　(3)　330-335　2005/05

DOI： 10.1016/j.msec.2005.04.001 　

ISSN： 0928-4931
Effect of nitrogen on mechanical properties of porous titanium compacts prepared by powder sintering Peer-reviewed

Naoyuki Nomura, Ik Hyun Oh, Shuji Hanada, Masafumi Kanehira, Keiichi Sasaki, Akihiko Chiba

Materials Science Forum　475-479　(III)　2313-2316　2005

DOI： 10.4028/0-87849-960-1.2313 　

ISSN： 0255-5476

eISSN： 1662-9752
Mechanical properties of forged low Ni and C-containing Co-Cr-Mo biomedical implant alloy Peer-reviewed

Akihiko Chiba, Kazushige Kumagai, Hiroe Takeda, Naoyuki Nomura

Materials Science Forum　475-479　(III)　2317-2322　2005

DOI： 10.4028/0-87849-960-1.2317 　

ISSN： 0255-5476

eISSN： 1662-9752
Mechanical properties of porous titanium compacts prepared by powder sintering Peer-reviewed

IH Oh, N Nomura, N Masahashi, S Hanada

SCRIPTA MATERIALIA　49　(12)　1197-1202　2003/12

DOI： 10.1016/j.scriptamat.2003.08.018 　

ISSN： 1359-6462
Thermal expansion, strength and oxidation resistance of Mo/Mo5SiB2 in-situ composites at elevated temperatures Peer-reviewed

K Yoshimi, S Nakatani, N Nomura, S Hanada

INTERMETALLICS　11　(8)　787-794　2003/08

DOI： 10.1016/S0966-9795(03)00073-6 　

ISSN： 0966-9795
Microstructure and oxidation resistance of a plasma sprayed Mo-Si-B multiphase alloy coating Peer-reviewed

N Nomura, T Suzuki, K Yoshimi, S Hanada

INTERMETALLICS　11　(7)　735-742　2003/07

DOI： 10.1016/S0966-9795(03)00069-4 　

ISSN： 0966-9795
Microstructures and mechanical properties of porosity-graded pure titanium compacts Peer-reviewed

IH Oh, H Segawa, N Nomura, S Hanada

MATERIALS TRANSACTIONS　44　(4)　657-660　2003/04

DOI： 10.2320/matertrans.44.657 　

ISSN： 1345-9678

eISSN： 1347-5320
Joining of oxidation-resistant Mo-Si-B multiphase alloy to heat-resistant Mo-ZrC in-situ composite Peer-reviewed

N Nomura, T Suzuki, S Nakatani, K Yoshimi, S Hanada

INTERMETALLICS　11　(1)　51-56　2003/01

DOI： 10.1016/S0966-9795(02)00166-8 　

ISSN： 0966-9795
Microstructures and fracture toughness of directionally solidified Mo-ZrC eutectic composites Peer-reviewed

Teppei Suzuki, Hiroaki Matsumoto, Naoyuki Nomura, Shuji Hanada

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS　3　(2)　137-143　2002/03

DOI： 10.1016/S1468-6996(02)00009-8 　

ISSN： 1468-6996

eISSN： 1878-5514
Microstructures and mechanical properties of porous titanium compacts prepared by powder sintering Peer-reviewed

IH Oh, N Nomura, S Hanada

MATERIALS TRANSACTIONS　43　(3)　443-446　2002/03

DOI： 10.2320/matertrans.43.443 　

ISSN： 1345-9678

eISSN： 1347-5320
Thermo-mechanical modelling of functionally graded thermal barrier coatings Peer-reviewed

N Nomura, M Gasik, A Kawasaki, R Watanabe

FUNCTIONALLY GRADED MATERIALS 2000　114　223-229　2001

ISSN： 1042-1122
Microstructures and Mechanical Properties of Eutectic Mo-XC (X=Ti Zr, Hf) In-situ Composites Peer-reviewed

Teppei Suzuki, Hiroaki Matsumoto, Naoyuki Nomura, Kyosuke Yoshimi, Shuji Hanada

Transactions of the Materials Research Society of Japan　26　(1)　307-310　2001
MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Mo/ZrC IN-SITU COMPOSITES Peer-reviewed

T. Suzuki, N. Nomura, S. Hanada

15th International Plansee Seminar, Plansee Holding AG　1　498-505　2001
STRUCTURAL IN-SITU COMPOSITES AT VERY HIGH TEMPERATURES Peer-reviewed

S. Hanada, T. Suzuki, K. Yoshimi, N. Nomura

The Second International Conference on Light Materials for Transportation Systems (LiMAT-2001)　1　31-38　2001
Porosity introduced functionally graded coatings using HVOF spraying system Peer-reviewed

N Nomura, MM Gasik, K Korpiola, E Rajamaki, A Kawasaki, R Watanabe, S Hanada

PRICM 4: FORTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, VOLS I AND II　2235-2238　2001
Microstructures and fracture toughness of Mo-ZrC eutectic composites Peer-reviewed

T Suzuki, H Matsumoto, N Nomura, N Masahashi, S Hanada

PRICM 4: FORTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, VOLS I AND II　2763-2766　2001
Mechanical properties of Mo-Nb-TiC in-situ composites synthesized by hot-pressing Peer-reviewed

N Nomura, K Yoshimi, S Hanada

MATERIALS TRANSACTIONS JIM　41　(12)　1599-1604　2000/12

DOI： 10.2320/matertrans1989.41.1599 　

ISSN： 0916-1821
Fracture toughness improvement of TiC by Nb and Mo precipitates Peer-reviewed

N Nomura, K Yoshimi, T Konno, S Hanada

JOURNAL OF MATERIALS SCIENCE LETTERS　19　(21)　1879-1881　2000/11

DOI： 10.1023/A:1006735624221 　

ISSN： 0261-8028
High-temperature strength and room-temperature fracture toughness of Mo-ZrC in-situ composites with hyper-eutectic structure Peer-reviewed

T Suzuki, N Nomura, K Yoshimi, S Hanada

JOURNAL OF THE JAPAN INSTITUTE OF METALS　64　(11)　1082-1088　2000/11

DOI： 10.2320/jinstmet1952.64.11_1082 　

ISSN： 0021-4876

eISSN： 1880-6880
Microstructure and creep of Mo-ZrC in-situ composite Peer-reviewed

T Suzuki, N Nomura, K Yoshimi, S Hanada

MATERIALS TRANSACTIONS JIM　41　(9)　1164-1167　2000/09

DOI： 10.2320/matertrans1989.41.1164 　

ISSN： 0916-1821
DEFORMATION AND FRACTURE OF TiC/Mo(Nb) IN-SITU COMPOSITES Peer-reviewed

Shuji Hanada, Naoyuki Nomura, Kyosuke Yoshimi

Proceeding of the Second International Alloy Conference (IAC-2): Properties of complex inorganic solids 2, Minerals and Other Materials Systems　2　393-400　2000
Microstructure and Strength of TiC/Mo-Nb In-situ Composites

Naoyuki Nomura, Kyosuke Yoshimi, Shuji Hanada

Research Report of the 123 Comittee for High Temperature Metallic Materials　40　(3)　365-368　1999/11
MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Nb-Mo-TiC IN-SITU COMPOSITES Peer-reviewed

N. Nomura, K. Yoshimi, T. Konno, S. Hanada

The third Pacific Rim International Conference on Advanced Materials and Processing (PRICM3), The Minerals, Metals and Materials Society　543-548　1998
Fabrication and microstructure controlling of Nb3Al based alloy by rotating electrode process Peer-reviewed

Naoyuki Nomura, Kyousuke Yoshimi, Shuji Hanada, Tatsuo Tabaru, Hisamichi Kimura, Akihisa Inoue

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy　43　(2)　256-261　1996
Publisher: Funtai Funamtsu Yakin Kyokai/Japan Soc. of Powder Metallurgy
DOI： 10.2497/jjspm.43.256 　

ISSN： 0532-8799
Microstructure and creep resistance of Nb3Al/Nb in-situ composites Peer-reviewed

N Nomura, K Yoshimi, S Hanada

STRUCTURAL INTERMETALLICS 1997　923-928　1996

Show all ︎Show first 5

Misc. 87

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　2022/06

ISSN： 0451-5994
Recent advances in additive manufacturing of metallic dental materials Invited Peer-reviewed

Naoyuki Nomura

The Journal of the Japanese Society for Dental Materials and Devices　40　(2)　153-156　2021/05
Recent advances of powder fabrication and additive manufacturing technologies

Naoyuki Nomura, Shigeru Unami

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy　68　(2)　46　2021/02/15

DOI： 10.2497/jjspm.68.46 　

ISSN： 0532-8799
Fabrication of composite powders for additive manufacturing

Naoyuki NOMURA, Weiwei ZHOU

Journal of the Japan Institute of Light Metals　70　(7)　310-311　2020/07/15
Challenges for the Fabrication of Heat-resistant MoSiBTic Alloy Using Laser Powder Bed Fusion for Ultrahigh Temperature Applications Peer-reviewed

Naoyuki NOMURA, Weiwei ZHOU, Zhenxing ZHOU, Kyousuke YOSHIMI

CERAMICS JAPAN　55　(2)　90-92　2020/02/01
Publisher: 日本セラミックス協会
ISSN： 0009-031X
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
Co-Cr alloys Invited

NOMURA Naoyuki

The Special Steel　68　(5)　20-22　2019/09
球形金属ガラス粒子の粘性流動成形加工によるマイクロダイヤフラムの作製

吉年規治, 山田類, 伊佐野はる香, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会講演大会(Web)　2019　2019
単粒子圧縮試験法によるFe系金属ガラス過冷却液体の粘性係数測定とその組成依存性

吉年規治, 青柳慶真, 山田類, 菊池圭子, 野村直之, 川崎亮

日本金属学会講演概要(CD-ROM)　164th　2019

ISSN： 2433-3093
Pd系金属ガラス粒子を用いた粘性流動成形加工による微小部品の作製

吉年規治, 山田類, 伊佐野はる香, 野村直之, 菊池圭子, 川崎亮

材料とプロセス(CD-ROM)　32　(2)　2019

ISSN： 1882-8922
Fundamentals of Metal 3D Printing Technologies Invited Peer-reviewed

Yuichiro Koizumi, Akihiko Chiba, Naoyuki Nomura, Takayoshi Nakano

Materia Japan　56　(12)　686-690　2017/12
Publisher: The Japan Institute of Metals and Materials
DOI： 10.2320/materia.56.686 　
Recent challenges and development of additive manufacturing

Naoyuki Nomura

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy　64　(2)　50　2017/02
Publisher: Journal of the Japan Society of Powder and Powder Metallurgy
DOI： 10.2497/jjspm.64.50 　

ISSN： 0532-8799
レーザー積層造形法を用いた再生冷却ロケット燃焼器の試作 Peer-reviewed

森谷信一, 野村直之, 菊池圭子, 中本貴之, 木村貴広, 川崎亮

第60回宇宙科学技術連合講演会論文集　2016/09
Microstructures and mechanical properties of selective laser-melted metals with different processed powder

Naoyuki Nomura, Keiko Kikuchi, Akira Kawasaki

World PM 2016 Congress and Exhibition　2016
バイオマテリアルとしての微粒子

森本展行, 野村直之

バイオマテリアルー生体材料ー　33　(4)　278-283　2015/10
Publisher: 日本バイオマテリアル学会
ISSN： 1347-7080
P-45 Corrosion resistance of Co-Cr-Mo-N alloy for dental casting changed Cr concentration

Doi H, Ashida M, Tsutsumi Y, Nomura N, Hanawa T

The journal of the Japanese Society for Dental Materials and Devices　34　(5)　389-389　2015/09/15
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Co-Cr-Mo-N alloy shows excellent mechanical properties and corrosion resistance. The mechanism of the effect by chromium has not been clearly clarified. Then, the effect on corrosion resistance by chromium of Co-Cr-Mo-N alloy was examined in this study. As the result, in the alloy of 32% Cr, the elution amount slightly increased, and in 34-38% Cr, the excellent corrosion resistance was shown.
A-13 Fatigue resistance of Co-Cr-Mo alloy clasps fabricated by selective laser melting process

Takaichi A, Kajima Y, Nakamoto T, Ashida M, Doi H, Nomura N, Hanawa T, Takahashi H, Wakabayashi N

The journal of the Japanese Society for Dental Materials and Devices　34　(5)　326-326　2015/09/15
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Fatigue resistance and the microstructure of the Co-Cr-Mo alloy clasps fabricated by selective laser melting (SLM) was investigated. Cellular dendrite was formed along the building direction and the γ phase was dominant in the specimens. The fatigue resistance varied depending on the building direction which was ascribe to the morphology of the inner surface and the orientation of the grain. The clasp which was perpendicular to the building direction showed the higher fatigue resistance than that of as-cast specimens. A prolonged fatigue life of the clasps is possible if the SLM process is further optimized in relevant processing conditions.
P-23 Effect on mechanical properties by Cr of Co-Cr-Mo-N alloy for dental casting

Doi H, Ashida M, Tsutsumi Y, Nomura N, Hanawa T

The journal of the Japanese Society for Dental Materials and Devices　34　(2)　94-94　2015/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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High chromium Co-Cr-Mo-N alloy shows excellent mechanical properties and corrosion resistance. The mechanism of the effect by chromium has not been clearly clarified. Then, the effect on mechanical properties by chromium of Co-Cr-Mo-N alloy was examined in this study. The result showed that Co-(32, 34)Cr-5Mo-(0.3, 0.4)N alloy was the effective composition.
A-21 Effects of chromium content on the microstructure of nitrogen added Co-Cr-Mo alloys for dental applications

Nomura N, Doi H, Tsutsumi Y, Hanawa T

The journal of the Japanese Society for Dental Materials and Devices　34　(2)　124-124　2015/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Nitrogen added Co-Cr-Mo alloys with high Cr content were prepared by conventional dental casting, and their microstructures were investigated. OM observation revealed that the all cast alloys consisted of coarse dendrites. Blocky precipitates were confirmed and increased with increasing Cr content. Lamellar precipitates were also observed adjacent to the blocky precipitates. Phase mapping by EBSD revealed that the γ phase dominantly existed in the alloys. Spherical precipitates with relatively dark contrast in BSE image were also confirmed in the fracture surface.
A-17 Surface composition and corrosion resistance of cobalt alloys containing large amount of chromium

Tsutsumi Y, Hanawa T, Doi H, Ashida M, Nomura N

The journal of the Japanese Society for Dental Materials and Devices　34　(2)　120-120　2015/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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We have developed the new cobalt (Co)-chromium (Cr) alloys showing high strength and ductility without nickel content. In this study, chemical properties of the new Co-Cr alloys were investigated. X-ray photoelectron spectroscopy (XPS) was performed to clear the compositions and the thicknesses of the surface oxide layers formed on the alloys. Conventional Co-Cr alloys were also prepared as reference specimens. As a result, accumulation of Cr and Mo in the surface oxide layer due to the selective oxidation these elements were found. On the other hand, Co seemed to dissolved at the initial stage of the formation of the layer.
Microstructures of selective laser melted Co-Cr-Mo alloys for biomedical applications

Naoyuki Nomura

Yosetsu Gakkai Shi/Journal of the Japan Welding Society　84　(6)　436-439　2015
Publisher: Japan Welding Society
DOI： 10.2207/jjws.84.436 　

ISSN： 0021-4787
CrおよびNを添加した歯科用Co-Cr-Mo合金の開発ー歯科用Co-Cr-Mo合金の組織と機械的性質に及ぼすクロムと窒素の影響－

Naoyuki Nomura

The Advanced Research of Biomaterials　97-98　2014/10/31
Publisher: The Japan Institute of Metals and Materials
レーザー積層造形法により作製した歯科用Co-29Cr-6Mo合金の組織と機械的性質－レーザー積層造形法によるCo-29Cr-6Mo合金の特性改善－

Naoyuki Nomura

The Advanced Research of Biomaterials　99-100　2014/10/31
Publisher: The Japan Institute of Metals and Materials
Zr-Nb合金の磁化率に及ぼす相構成の影響ーZr合金の構成相と磁化率の関係－

Naoyuki Nomura

The Advanced Research of Biomaterials　115-116　2014/10/31
Publisher: The Japan Institute of Metals and Materials
MRI画像中に発生する各種金属による磁化率アーチファクトの3次元的定量評価－MRIアーチファクトを抑制する低磁性医療用材料の設計指針ー

Naoyuki Nomura

The Advanced Research of Biomaterials　119-120　2014/10/31
Publisher: The Japan Institute of Metals and Materials
P-74 Corrosion resistance of high nitrogen inclusion Co-Cr-Mo-W alloy

Doi H, Tsutsumi Y, Ashida M, Chen P, Nomura N, Hanawa T

The journal of the Japanese Society for Dental Materials and Devices　33　(5)　479-479　2014/09/20
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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The Co-Cr-Mo alloy is applied for dental casting alloy. This alloy though both mechanical properties, corrosion resistance are excellent, research and development in which in addition, the property is improved is advanced. In this study, mechanical properties and corrosion resistance were examined on the alloy which replaced Mo of Co-33Cr-5Mo-0.3N alloy in W. On The result showed that mechanical properties were improved, as the composition of W increases. And, though on the corrosion resistance, the improvement by addition of W was not observed, the lowering could not be observed either.
A-2 Microstructure and mechanical properties of nitrogen added Co-Cr-Mo-W alloys for dental casting alloys

Nomura N, Doi H, Suyalatu, Tsutsumi Y, Hanawa T

The journal of the Japanese Society for Dental Materials and Devices　33　(5)　372-372　2014/09/20
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Nitrogen added Co-33Cr-(Mo, W) alloys were prepared by conventional dental casting, and their microstructure and mechanical properties were investigated. Microstructures consisting of coarse dendrites were observed irrespective of Mo and W contents. Precipitates were decreased with increasing W contents. Phase mapping by EBSD revealed that the γ phase dominantly existed irrespective of the Mo and W composition. With increasing W content, the 0.2% proof strength and UTS slightly increased, and the elongation showed almost the same. The γ phase was still stabilized when the Mo was substituted by W.
A-9 Microstructure and mechanical properties of nitrogen and carbon added Co-33Cr-5Mo alloys for dental casting alloys

Nomura N, Doi H, Suyalatu, Tsutsumi Y, Hanawa T

The journal of the Japanese Society for Dental Materials and Devices　33　(2)　92-92　2014/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Nitrogen and carbon added Co-33Cr-5Mo alloys were prepared by conventional dental casting, and their microstructure and mechanical properties were investigated. Precipitates were observed in all the alloys and increased with increasing carbon content. EDS analysis revealed that Mo and Si were enriched in the precipitates compared to the matrix. Phase mapping by EBSD indicated the nitrogen and carbon added alloys consisted of the y phase dominantly irrespective of the composition. With increasing carbon content, 0.2% proof strength and UTS increased but elongation decreased. Therefore, the increase of the strength by the carbon addition may be mainly due to the composite strengthening.
P-37 Corrosion resistance in 1% lactic acid of high chromium Co-Cr-Mo alloy for dental casting added nitrogen and carbon

Doi H, Tsutsumi Y, Suyalatu, Nomura N, Hanawa T

The journal of the Japanese Society for Dental Materials and Devices　33　(2)　146-146　2014/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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By adding nitrogen, mechanical properties are improved on Co-Cr-Mo alloy. In addition, it is possible to adjust nitric dosage by increasing composition of chromium. And, it is considered that by adding carbon to Co-Cr-Mo alloy, the metal structure changes, and that it affects mechanical properties. Then, corrosion resistance of high chromium Co-Cr-Mo alloy for dental casting which added nitrogen and carbon was examined on ion elution amount in spreading in 1% lactic acid in this study. As the result, it was proven that the elution amount of Co decreased on both nitrogen, carbon addition.
レーザー積層造形による医療用金属の成形

Naoyuki Nomura

Journal of Japanese Society of Biomaterials　31　(4)　220-227　2013/10/31
Publisher: 日本医学館
生体安全性・生体適合性を有するZr基バルク金属ガラスの創出

堤祐介, SUYALATU, 右田聖, 土居壽, 野村直之, 塙隆夫, 近藤亮太, 横山嘉彦

東北大学金属材料研究所金属ガラス総合研究センター共同利用研究報告書　2012　31-32　2013/06
Development of metallic biomaterials with low magnetic susceptibility

Naoyuki Nomura, Takao Hanawa

The Journal of the Japanese Society of Magnetic Applications in Dentistry　21　(1)　10-15　2012/12/01
Publisher: The Japanese Society of Magnetic Applications in Dentistry
Effect on mechanical properties by Mo of Co-Cr-Mo-N alloy for dental casting

DOI H, SUYALATU, MIGITA S, TSUTSUMI Y, NOMURA N, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　31　(5)　378-378　2012/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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High chromium Co-Cr-Mo-N alloy shows excellent mechanical properties and corrosion resistance. The mechanism of the effect by molybdenum has not been clearly clarified. Then, the effect on mechanical properties by molybdenum of Co-Cr-Mo-N alloy was examined in this study. The result showed that Co-33Cr-5Mo-0.3N alloy was the effective composition.
Application to dentistry of selective laser melting (SLM) : Mechanical properties and corrosion resistance of the SLMed Co-Cr-Mo alloys

TAKAICHI A, SUYALATU, NOMURA N, NAKAMOTO T, HANAWA T, IGARASHI Y

The journal of the Japanese Society for Dental Materials and Devices　31　(5)　387-387　2012/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Co-29Cr-6Mo alloy was fabricated by selective laser melting and the microstructures, mechanical properties and corrosion resistances were investigated. Cellular dendrite was formed along the building direction. Mechanical properties of the SLMed alloy builds varied depending on the tensile direction, which was influenced by their microstructure and crystallographic anisotropy. However, the SLMed builts satisfied the standards on the mechanical properties of dental alloys (JIST6115 and ISO22674). The amount of metals relesed from the SLMed alloy build were lower than that that from as-cast alloys. Therefore, the SLM process can be applicable to the fabrication of dental prostheses using Co-Cr-Mo alloys.
Effects of building atmosphere on the microstructure and mechanical properties of cobalt chromium alloy fabricated by selective laser melting process

SUYALATU, NOMURA N, NAKAMOTO T, DOI H, TSUTSUMI Y, MIGITA S, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　31　(5)　380-380　2012/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Ni-free Co-Cr-Mo alloy was fabricated by selective laser melting process in Ar or N_2 atmosphere, and their microstructure and mechanical properties were investigated. Columnar grain and fine cellular dendrites were observed along the building direction for both atmospheres. The accumulation of [100] of the γ phase was confirmed at the laser power of 200W and the scan pitches of 0.2 and 0.3 mm. The deformation behavior of the alloy SLMed in N_2 atmosphere was similar to that in Ar. Mechanical properties of the SLMed alloy in N_2 and Ar satisfied the requirements of dental Co-Cr-Mo alloys (JIST6115 and ISO 22674).
Mechanical properties of Zr/Ag composite wires to prevent artifacts in MRI for medical applications

SAKAI T, KONDO R, SUYALATU, MIGITA S, TSUTSUMI Y, DOI H, NOMURA N, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　31　(5)　377-377　2012/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Mechanical properties of Zr/Ag composite wires were evaluated using Vickers hardness and tensile tests. The hardness of Zr increased by swaging while that of Ag did not significantly change. The 0.2% proof strengths of Zr/Ag composite wires decreased with increasing vol.% of Ag and they are higher than the estimated them based on the rule of mixture. Work hardening of Zr may contribute to the increase of the strength. On the other hand, young's modulus of Zr/Ag composite wires was lower than the estimated one, which may be caused by preferential crystallographic orientation of Zr and Ag during swaging.
Zirconia coating on Zr-Nb alloys by high-temperature oxidation : Effect of high-temperature oxidation on color and thickness of the oxide layer

YU Miao, KONDO R, SUYALATU, TSUTSUMI Y, DOI H, NOMURA N, HANAWA T, KASUGAI S

The journal of the Japanese Society for Dental Materials and Devices　31　(5)　363-363　2012/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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The aim of this study was to design an abutment of dental implants with good esthetic and mechanical properties. Zirconia layer was formed on a Zr-Nb alloy by thermal oxidation in air. The heating temperatures employed in this study were 700-1000℃; the heating time were 30-180 min. An optimal white colored and condensed oxidation layer was formed on the alloy. The thickness of oxide layer increased with temperature and time.
機械的性質・耐食性・安全性を併せ持つZr基バルク金属ガラスの創出

堤祐介, SUYALATU, 右田聖, 土居壽, 野村直之, 塙隆夫, 近藤亮太, 横山嘉彦, 井上明久

東北大学金属材料研究所金属ガラス総合研究センター共同利用研究報告書　2011　36-37　2012/06
Development of Zr-based Alloys Preventing Artifacts in MRI

野村直之

CHEMICAL INDUSTRY　63　(5)　45-48　2012/05/01
Publisher: 化学工業社
ISSN： 0451-2014
Effect of Mg on enhancement of calcium phosphate formation on Zr by MAO treatment

TSUTSUMI Y, Suyalatu, MIGITA S, DOI H, NOMURA N, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　31　(2)　148-148　2012/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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The micro-arc oxidation (MAO) treatment was performed on Zr to enhance t bioactivity. The surface oxide layers were characterized using surface analyses; the calcium phosphate formation on the specimens after immersion in Hanks' solution was evaluated. As a result, porous oxide layer contained Ca and P because of the incorporation from the electrolyte for the MAO treatment. The concentration of Mg inside the oxide layer could be controlled by the selection of the electrolyte. Thick calcium phosphate layers formed on the specimens without Mg constituent. The presence of Mg might weaken the calcium phosphate formation during the immersion in Hanks' solution.
Initial adhesion behavior of osteoblast-like cell on PEG electrodeposited Ti surface-

MIGITA S, TSUTSUMI Y, DOI H, NOMURA N, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　31　(2)　137-137　2012/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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It is important to provide scaffolding function for maintain of cellular function. In this study, zwitter ionic polyethrenglycol (PEG) was deposited on Ti surface using electrochemical technique to ligate cell-adhesive peptide, GRGDS. There were no difference for morphology, cytoskeleton, and attachment on Ti, GRGDS modified Ti (Ti/GRGDS), and GRGDS-modified PEG-electrodeposited Ti (GRGDS/PEG/Ti). However, integrin α2 which is one of RGD ligands expressed on GRGDS/PEG/Ti. PEG on Ti may accelerate osteogenesis of osteoblast through integrin α2 signaling pathway.
Microstructure and magnetic susceptibility of dental Zr-Sn alloys to prevent artifacts in MRI

KONDO R, NOMURA N, Suyalatu, TSUTSUMI Y, DOI H, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　31　(2)　157-157　2012/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Microstructure and magnetic susceptibility of Zr-Sn alloys were investigated to develop a novel Zr alloys with a low magnetic susceptibility for magnetic resonance imaging (MRI). The α-Zr(hcp) was observed in Zr-(0-17)Sn alloys. The magnetic susceptibility of Zr-(0-17)Sn alloys decreased with the increase of Sn concentration. The decreasing rate of the magnetic susceptibility indicates that Sn in Zr-Sn alloy may behave as a diamagnetic metal. In addition, Zr-17Sn alloy possesses high proof strength (about 900 MPa) and low magnetic susceptibility (0.86 x 10^<-6> g^<-1> cm^3).
Effects of Mo and N content of dental-cast Co-Cr-Mo alloys on the microstructures and mechanical properties

Suyalatu, NOMURA N, YAMADA Y, DOI H, TSUTSUMI Y, KUROSU S, SHIMOJO K, CHIBA A, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　31　(2)　64-64　2012/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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The microstructure and mechanical properties of dental-cast Co-33Cr-(0-0.4)N and Co-33Cr-(3-6.6)Mo-0.3N alloys were investigated, and effects of the N and Mo content on the microstructure and mechanical properties were discussed in order to develop ductile Co-Cr-Mo alloys without Ni addition for dental applications. The proof strength and elongation of the Co-33Cr-5Mo-(0.3-0.4)N and Co-33Cr-(4-6.6)Mo-0.3N alloys satisfied with type 5 criterion in IS022674; thus, these alloys are promising use in dental materials.
Fabrication of Zr/Ag composites to prevent artifacts in MRI for dental applications

SAKAI T, KONDO R, Suyalatu, TSUTSUMI Y, DOI H, NOMURA N, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　31　(2)　65-65　2012/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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The Zr/Ag composites were fabricated through swaging process, and their magnetic susceptibilities were evaluated using an magnetic balance. The magnetic susceptibilities of the composites decreased with increasing vol.% of Ag. In particular, the magnetic susceptibility of the composite containing 81 vol.% of Ag (1.88 x 10^<-5>) was about one-tenth as low as that of Ti (18.0 x 10^<-5>). The magnetic susceptibilities of the swaged Zr/Ag composites were slightly higher than those of the estimated values based on the rule of mixture. XRD analyses revealed preferred crystallographic orientation for the both swaged Zr and Ag, which may cause the higher magnetic susceptibility than those of the estimated values.
補綴物製作の未来を切り開く「レーザー積層造形法」ってナンだ？

金澤学, 岩城麻衣子, 野村直之, 塙隆夫, 水口俊介

the Quintessence　31　(2)　131-137　2012/02/10
Publisher: クインテッセンス出版
コーヌスクローネへのCo-Cr合金およびTi合金の適用

五十嵐順正, 大井田督仁, 野村直之, 塙隆夫

日本歯科理工学会誌　31　(1)　13-16　2012/01
Publisher: 日本歯科理工学会
Surface modification of porous titanium having young's modulus similar to human cortical bone by electron cyclotron resonance plasma oxidation

M. Fujikawa, H. Masumoto, M. Oikawa, Y. Orii, N. Nomura, O. Suzuki, K. Sasaki

24th European Conference on Biomaterials - Annual Conference of the European Society for Biomaterials　2011/12/01
Improvement of hard-tissue compatibility of Zr by combination of MAO and chemical treatments

TSUTSUMI Y, DOI H, NOMURA N, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　30　(5)　296-296　2011/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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The combination of micro-arc oxidation (MAO) and chemical treatments was performed on Zr to enhance its bioactivity. The surface oxide layers were characterized using surface analyses; the calcium phosphate formation on the specimens after immersion in Hanks' solution was evaluated. As a result, thick calcium phosphate layers formed on Zr specimens that underwent MAO and chemical treatments, while no precipitate was observed without treatment. The surface analyses revealed that the porous oxide layer contained the incorporated Ca, P, and Mg. In addition, both the composition and crystal structure of the oxide layers uniquely changed by the following chemical treatments.
Anisotropic Mechanical Properties of Co-29Cr-6Mo Alloy Fabricated by Selective Laser Melting Process

TAKAICHI A, SUYALATU, NOMURA N, NAKAMOTO T, DOI H, TSUTSUMI Y, KUROSU S, CHIBA A, WAKABAYASHI N, IGARASHI Y, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　30　(5)　293-293　2011/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Orientation dependence of mechanical properties of selective laser melted (SLMed) Co-29Cr-6Mo alloy was investigated. Columnar grains and fine cellular dendrites were observed along the powder stacking direction. The accumulation of [100] of the γ phase was confirmed when the scan pitch was 0.2mm. The ultimate tensile strength and elongation of the SLMed alloy fabricated parallel to the powder stacking direction were higher than those of the other SLMed alloy, suggesting that the SLMed Co-29Cr-6Mo alloy may possess mechanical anisotropy depending on the tensile direction.
Microstructures and Mechanical Properties of Co-Cr-Mo Alloys Containing High Chromium and Nitrogen Fabricated by Selective Laser Melting Process

SUYALATU, N Naoyuki, TAKAICHI A, NAKAMOTO T, DOI H, TSUTSUMI Y, KUROSU S, CHIBA A, WAKABAYASHI N, IGARASHI Y, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　30　(5)　292-292　2011/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Microstructure and mechanical properties of a Co-Cr-Mo alloy containing high chromium and nitrogen fabricated by Selective Laser Melting (SLM) process were investigated. Columnar structure elongated along the powder stacking direction was observed. Fine cellular structure was formed in the columnar grains. The γ phase was dominantly confirmed by XRD. It was found that the mechanical properties of the SLMed alloy satisfied the standards of dental Co-Cr-Mo alloys (JIST6115 and ISO22674). The γ phase was still dominantly remained after tensile tests, which was different from the conventional Co-Cr-Mo alloys.
Effects of Cr and N of dental-cast Co-Cr-Mo alloys on their plastic deformation

NOMURA N, YODA K, SUYALATU, TSUTSUMI Y, DOI H, KUROSU S, CHIBA A, IGARASHI M, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　30　(5)　294-294　2011/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Plastic deformation of N-free and N-added Co-(20-33)Cr-5Mo was examined through microstructural changes. SEM and XRD analysis were carried out against the tensile specimens before and after tensile tests. XRD analyses revealed that peak intensity from the ε phase in the N-added Co-33Cr-5Mo was lower than those from the other alloys irrespective of showing large elongation, suggesting that the other deformation mechanisms as well as strain-induced martensitic transformation could work in the N-added Co-33Cr-5Mo.
Corrosion resistance in 1% lactic acid of Co-Cr-Mo alloy dental castings added N

DOI H, SUYALATU, MIGITA S, TSUTSUMI Y, NOMURA N, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　30　(5)　332-332　2011/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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The mechanical properties of Co-Cr-Mo alloy dental casts which added N are good. Examination of corrosion resistance is necessary to apply this alloy as dental material. In this study, ion elution amounts in soaking the alloy in 1% lactic acid were measured, and corrosion resistance of the alloy was examined. As the result, the elution amounts of ions were very small, and large difference were not seen in comparison with other commercial alloys.
MRIアーチファクト防止低磁性合金 (特集生体機能性金属バイオマテリアル)

野村直之

金属　81　(5)　399-402　2011/05
Publisher: アグネ技術センター
ISSN： 0368-6337
MRIアーチファクト防止低磁性合金

野村直之

KINZOKU　81　(5)　25-28　2011/05/01
Publisher: AGNE GIJUTSU CENTER
各種金属材料を用いたMRIアーチファクトの3次元的評価

今井治樹, 今井治樹, 田中洋次, 野村直之, 堤祐介, 土居壽, 大野喜久郎, 小野卓史, 塙隆夫

日本バイオマテリアル学会大会予稿集　33rd　2011
レーザー積層造形法により作製したコバルトクロム合金の組織と機械的特性

野村直之, 蘇亜拉図, 土居壽, 堤祐介, 右田聖, 塙隆夫

東京医科歯科大学生体材料工学研究所年報　2011
Effect of Cr and N on the Vickers hardness of dental cast Co-Cr alloys

YODA K, NOMURA N, CHIBA A, HANAWA T, IGARASHI Y

The journal of the Japanese Society for Dental Materials and Devices　29　(5)　444-444　2010/09/20
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Vickers hardness of Co-Cr-Mo alloys were investigated as a function of Cr and N contents for dental applications. The hardness of 33Cr was highest in the N-free alloys because of the existence of the inclusion. In the N-contained alloy, the increase of the hardness was confirmed at 29Cr and 33Cr. Solid solution hardening may occur because the inclusion in 29Cr was not observed. Although the hardness of N-contained 33Cr was as high as that of N-free 33Cr, the yield strength of N-contained 33Cr was twice higher than that of N-free 33Cr.
Application to telescopic dentures of Co-Cr alloys : Evaluation of static frictional coefficients in dental alloys (part3)

OHIDA M, NOMURA N, HANAWA T, IGARASI Y

The journal of the Japanese Society for Dental Materials and Devices　29　(5)　443-443　2010/09/20
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Static frictional coefficients (SFC) of a gold alloy and a Co-Cr alloy were evaluated for the application of cone crown telescope dentures. The SFC of the gold alloy was higher than that of the Co-Cr alloy in a roughness range. However, the SFC of the Co-Cr alloy increased and was comparable to that of the gold alloy after sandblasting. These results suggest that the SFC of the Co-Cr alloy is sensitive to the surface roughness compared with that of the gold alloy. In the wet condition, the SFCs of both alloys decreased due to the lubricating effect.
Application to dentistry of selective laser melting : Microstructures and mechanical properties of Co-Cr-Mo alloys fabricated by selective laser melting

TAKAICHI A, YODA K, NOMURA N, NAKAMOTO T, DOI H, TSUTSUMI Y, KUROSU S, CHIBA A, HANAWA T, IGARASHI Y

The journal of the Japanese Society for Dental Materials and Devices　29　(5)　445-445　2010/09/20
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Co-29Cr-6Mo alloy was fabricated by selective laser melting and the microstructures and mechanical properties were investigated. Fiber-like dendrite was formed along the powder stacking direction. The elongated grains were observed and the orientation was accumulated in near [100], which was parallel to the stacking direction. The elongation of Co-29Cr-6Mo alloy fabricated by selective laser melting was higher than that of as-cast Co-29Cr-6Mo alloys.
Artificial organs: Recent progress in metals and ceramics

Naoyuki Nomura

Journal of Artificial Organs　13　(1)　10-12　2010/04

DOI： 10.1007/s10047-010-0487-y 　

ISSN： 1434-7229
Mechanical properties of dental Zr-Nb alloys to prevent artifacts in MRI

KONDO R, TSUTSUMI Y, DOI H, NOMURA N, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　29　(2)　128-128　2010/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Microstructure and mechanical properties of Zr-Nb alloys were investigated to develop novel Zr alloys with a low magnetic susceptibility for magnetic resonance imaging (MRI). The Zr-Nb alloys consisting of ω phase show low tensile strength brittle fracture, while the magnetic susceptibility is lowest in the alloy. On the other hand, Zr-Nb alloys consisting of α' phase show high tensile strength and moderate ductility. Since the magnetic susceptibility of the α' phase is lower than that of the β phase, the Zr-Nb alloys consisting of α' phase possess promising properties to prevent artifacts in MRI.
Effect on soft tissue compatibility of chain length of RGD-immobilizing PEG electrodeposited on titanium

OYA K, TSUTSUMI Y, DOI H, NOMURA N, HANAWA T

The journal of the Japanese Society for Dental Materials and Devices　29　(2)　170-170　2010/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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The creation of biomaterial surfaces which has good cell adhesiveness is important to develop new biomaterials. In this study, cell adhesive peptide, RGD, was immobilized on titanium through zwitterionic poly (ethylene glycol), NH_2-PEG-COOH, with different length of molecular chain. The differences of immobilized manners among various length of molecular chains and cell adhesiveness were investigated. As a result, the density of NH_2-PEG-COOH immobilized on titanium was decreased when the NH_2-PEG-COOH was long. Moreover, the amount of RGD peptide which intervened between NH_2-PEG-COOH chains or directly immobilized on titanium was large when NH_2-PEG-COOH was long. Furthermore, the difference of NH_2-PEG-COOH length affected to cellular adhesiveness.
Application to telescopic dentures of Co-Cr alloys : Evaluation of static frictional coefficients in dental alloys (part 2)

OHIDA M, NOMURA N, HANAWA T, IGARASI Y

The journal of the Japanese Society for Dental Materials and Devices　29　(2)　171-171　2010/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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Static frictional coefficients (SFC) of a gold alloy and a Co-Cr alloy were evaluated for the application of cone crown telescope dentures. It is noted that the SFC of the gold alloy was decreased by keeping in air at room temperature for 6 months and by annealing at 60℃ in air for 30min. The SFC was restored by re-polishing. It was considered that the decrease of SFC of the gold alloy was caused by the growth of oxide film at the alloy surface on annealing. However, SFCs of both alloys were increased by aging at 400℃. It was considered that the increase of these SFCs was caused by the change of surface condition.
Effect of Cr and N on the mechanical properties of dental cast Co-Cr alloys

YODA K, NOMURA N, CHIBA A, HANAWA T, IGARASHI Y

Chem. Lett.　29　(2)　172-172　2010/03/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 1884-4421

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The mechanical properties of Co-Cr-Mo-N alloys were investigated as a function of Cr and N contents for dental applications. 0.2% proof strength and ultimate tensile strength of N added Co-Cr-Mo alloys were higher than those of Co-Cr-Mo alloys. The mechanical properties were sensitive to N content, rather than Cr. It should be noted that plastic elongation of N added Co-33Cr-5Mo was higher than that of Co-33Cr-5Mo. It was considered that N contributed to the stabilization of the γ phase and the decrease of ε phase in the Co-33Cr-5Mo alloy.
Improvement of hard tissue compatibility of metallic biomaterials by micro-arc oxidation (MAO) treatment

Annual reports of the Institute of Biomaterials and Bioengineering　44　16-18　2010
Publisher: 東京医科歯科大学生体材料工学研究所
ISSN： 1345-2886
Mechanical properties of Zr-Nb alloys to prevent artifacts in MRI for dental application

Kondo Ryota, Tsutsumi Yusuke, Doi Hisashi, Nomura Naoyuki, Hanawa Takao

Abstracts of the General Sessions of the Japanese Society for Dental Materials and Devices　2010　(0)　42-42　2010
Publisher: The Japanese Society for Dental Materials and Devices
DOI： 10.14832/gsjsdmd.2010s.0.42.0 　

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MRI診断において, 磁化率の高い金属製インプラントを観察するとアーチファクトを生じ, 診断の妨げとなる. Zr-Nb合金は磁化率が低いとされるTiの半分以下の磁化率を有しており, アーチファクト防止型歯科用インプラントとして期待される. インプラントは製造過程で大きな塑性変形を伴うため, 高い靭性を有していることが求められる. そこで本研究では, Zr-Nb合金の組織と機械的性質について調べた.
108 Addition of Softy Tissue Adhesion to Metals with Electrodeposition of Collagen

HANAWA Takao, KAMATA Hideki, MORIYAMA keiji, OYA Kei, TSUTSUMI Yusuke, DOI Hisashi, NOMURA Naoyuki

59　15-16　2010
Publisher: 日本材料学会
Difference in gene expression in bone differentiation of MC3T3-E1 cells on metals

OYA K, TSUTSUMI Y, DOI H, NOMURA N, HANAWA T

Journal of the Japanese Society for Dental Materials and Devices　28　(5)　232-232　2009/09/10
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 0286-5858

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The gene expression of osteogenic cells differentiation induced on titanium must be elucidated comprehensively to determine the expression mechanism of hard tissue compatibility on it. In this study, DNA microarray was carried out using the osteoblastic MC3T3-E1 cells differentiation induced on titanium, zirconium, and gold for 10 d. The expression levels of Ifitm5, Bglap 1, Ibsp, and Spp 1 genes which were concerned to bone formation were greater on titanium than those on the other metals. This data indicated that the hard tissue compatibility of titanium was the best in gene expression levels of osteogenic cells among the tested metals.
Application to telescopic dentures of Co-Cr alloys : Evaluation of static frictional coefficients in dental alloys

OHIDA M, YODA K, NOMURA N, HANAWA T, IGARASI Y

Journal of the Japanese Society for Dental Materials and Devices　28　(5)　205-205　2009/09/10
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 0286-5858

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Static frictional coefficients (SFC) of a gold-based alloy and a Co-Cr alloy were evaluated for the application of telescopic dentures. Surface roughness did not influence the SFCs of the alloys, although their values were different. The SFCs of gold-based alloy were higher than those of the Co-Cr alloy. It is noted that the SFC of the gold-alloy was decreased by annealing at 85℃ in air and the SFC was restored by re-polishing. XPS analysis revealed surface oxide formation on the alloy after annealing. It was considered that the decrease of SFC of the gold-based alloy was caused by the formation of oxide film at the alloy surface on annealing.
Microstructure and mechanical properties of high-Cr and high-N containing Ni-free Co-Cr-Mo alloys for dental casting

NOMURA N, DOI H, TSUTSUMI Y, OYA K, HANAWA T, CHIBA A

Journal of the Japanese Society for Dental Materials and Devices　28　(5)　204-204　2009/09/10
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 0286-5858

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In order to examine the possibility of the high-Cr and high-N containing Co-Cr-Mo alloy for dental application, conventional dental casting was performed using the alloy and the micro structure and mechanical properties were evaluated in this study. Denture having mesh and clasp was successfully obtained. Typical dendritic structure with precipitates was observed in the alloy. TEM observation revealed that the stacking fault was distorted owing to the addition of Nitrogen. It was found that the high-Cr and high-N contained Co-Cr-Mo alloys showed higher plastic elongation compared to the conventional Co-Cr-Mo dental alloy.
Corrosion behavior of Zr-based bulk glassy alloy for biomaterials in simulated body fluid

TSUTSUMI Y, DOI H, NOMURA N, HANAWA T

Journal of the Japanese Society for Dental Materials and Devices　28　(5)　207-207　2009/09/10
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 0286-5858

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The bulk glassy alloys which have amorphous structure without any crystal phases are expected to be novel dental materials because of their extremely high strength and low Young's modulus. We focused the fact that the corrosion resistances of Zr-based bulk glassy alloys were much improved by small addition of Pd/Pt. In this work, the effects of thermal treatment and composition of the passive film on corrosion resistance of Zr-based bulk glassy alloy were investigated. The mechanism of the corrosion resistance improvement was discussed from these results.
Zirconium coating on titanium for inhibition of assimilation with bone

Takao Hanawa, Daichi Nishimura, Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura

8th World Biomaterials Congress 2008　4　2165　2008/12/01
金属材料と再生医療

野村直之

バイオマテリアル－生体材料　26　(4)　320-324　2008/10/31
Publisher: 日本医学館
Effects of nitrogen and boron addition on microstructure and mechanical properties of Co-Cr-Mo alloys

NOMURA N., DOI H., TSUTSUMI Y., HANAWA T., CHIBA A.

Journal of the Japanese Society for Dental Materials and Devices　27　(5)　401-401　2008/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 0286-5858
Evaluation of corrosion resistance of Zr-Nb and Zr-Ta alloys in simulated body fluid

TSUTSUMI Y., DOI H., NOMURA N., HANAWA H.

Journal of the Japanese Society for Dental Materials and Devices　27　(5)　402-402　2008/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 0286-5858
Mechanical properties and corrosion resistance of Zr-Nb alloy added Pd and Pt

DOI H., TSUTSUMI Y., NOMURA N., HANAWA H.

Journal of the Japanese Society for Dental Materials and Devices　27　(5)　446-446　2008/09/25
Publisher: The Japanese Society for Dental Materials and Devices (JSDMD)
ISSN： 0286-5858
窒素添加したNiフリー生体用Co-Cr-Mo合金の薄板加工プロセス

森真奈美, 山中謙太, 野村直之, 黒須信吾, 松本洋明, 播磨宣幸, 千葉晶彦

日本金属学会講演概要　143rd　2008

ISSN： 1342-5730
窒素添加したNiフリー生体用Co-Cr-Mo合金の組織制御による圧延性向上の試み

森真奈美, 山中謙太, 野村直之, 黒須信吾, 松本洋明, 播磨宣幸, 千葉晶彦

日本金属学会講演概要　143rd　2008

ISSN： 1342-5730
生体用Co-29Cr-6Mo合金の動的再結晶挙動

山中謙太, 山中謙太, 黒須信吾, 黒須信吾, 李尚学, 野村直之, 松本洋明, 千葉晶彦

日本金属学会講演概要　142nd　2008

ISSN： 1342-5730
Fabrication and mechanical properties of porous Ti/Ultra high-molecular weight polyethylene

Annual reports of the Institute of Biomaterials and Bioengineering　42　21-24　2008
Publisher: 東京医科歯科大学生体材料工学研究所
ISSN： 1345-2886
最近の進歩人工材料（無機）

野村直之

The Japanese Journal of Artificial Organs　37　(3)　168-170　2008
Publisher: 日本人工臓器学会
DOI： 10.11392/jsao.37.168 　
Alloy Design and Microstructure Control for Mo-Si Intermetallics Based Ultra-High Temperature Materials

YOSHIMI Kyosuke, MARUYAMA Kouichi, YAMAUCHI Akira, KUROKAWA Kazuya, NOMURA Naoyuki, TU Rong, GOTO Takashi, HANADA Shuji

塑性と加工 = JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY　48　(561)　887-891　2007/10/25
Publisher: 日本塑性加工学会
DOI： 10.9773/sosei.48.887 　

ISSN： 0038-1586
生体用Co-29Cr-6Mo合金の高温圧縮変形後の組織

松本洋明, 山中謙太, 黒須信吾, 李尚学, 野村直之, 千葉晶彦

日本金属学会講演概要　141st　2007

ISSN： 1342-5730
生体用Co-29Cr-6Mo合金の熱間閉塞鍛造による人工股関節用ステムの試作

山中謙太, 山中謙太, 野村直之, 李尚学, 松本洋明, 千葉晶彦

日本金属学会講演概要　141st　2007

ISSN： 1342-5730
Effect of iron addition on Co-29Cr-6Mo alloys for biomedical applications

Sang-Hak Lee, Hisae Chiba, Bunei Syuto, Naoyuki Nomura, Akihiko Chiba

PRICM 6: SIXTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-3　561-565　1497-+　2007

ISSN： 0255-5476
Studies on Root Restoration : Part.10 Microstructures and Mechanical properties of Porous Titanium Compacts and Culture of Periodontal Ligament Cells

KANEHIRA Masafumi, HIRATA Masatugu, NISHIHARA Daisuke, YAMAMOTO Toshinori, IWAMATSU Yoko, KINDAICHI Koji, NOMURA Naoyuki, HANADA Syuji, SASAKI Keiichi, KOMATSU Masashi

46　160-160　2003/05/06

ISSN： 0387-2343
Mo-ZrC in-situ 共晶複合材料の高温強度と破壊靱性

鈴木哲平, 松本洋明, 野村直之, 花田修治

まてりあ（日本金属学会報）　41　(3)　150-153　2002/03
Publisher: 日本金属学会
DOI： 10.2320/materia.41.150 　

ISSN： 1340-2625

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Books and Other Publications 4

A Glossary for Dental Materials and Devices

NOMURA Naoyuki

2018/07
多次元アディティブマニュファクチュアリング

中田一博, 桐原聡秀

一般社団法人日本溶接協会　2018/03

ISBN: 9784907200084
Advances in Metallic Biomaterials

Mitsuo Niinomi, Takayuki Narushima, Masaaki Nakai

Springer　2015/06

ISBN: 9783662468357
Metals for Medicine

The Japan Institute of Metals　2010/02

ISBN: 9784889030754

Presentations 391

Enhancing laser additive manufacturability of Al powders through nano-CuO powder decoration

Zhenxing Zhou, Weiwei Zhou, Naoyuki Nomura

日本金属学会秋期講演大会（第175回）　2024/09/20
Mechanical functionalization of carbon supersaturated Ti alloys by laser powder bed fusion

Weiwei Zhou, Yu Zhang, Mingqi Dong, Naoyuki Nomura

日本金属学会秋期講演大会（第175回）　2024/09/20
[村上奨励賞受賞講演]ナノ炭素添加金属基複合材料の高機能化に関する研究

周偉偉, 野村直之, 川崎亮

日本金属学会秋期講演大会（第175回）　2024/09/20
Mechanical performance prediction of additively manufactured parts using a Ti-6Al-4V micro-powder

張涛, 周偉偉, 野村直之

日本金属学会秋期講演大会（第175回）　2024/09/20
Fabrication of carbon-supersaturated titanium alloys by laser powder bed fusion

董明琪, 周偉偉, 野村直之

日本金属学会秋期講演大会（第175回）　2024/09/20
経済型積層造形用Ti-6Al-4V合金粉末とそのレーザ積層造形体の評価

掛川直樹, 稲垣和希, 周偉偉, 野村直之, 岡村治幸, 大西隆

日本金属学会秋期講演大会（第175回）　2024/09/20
Fabrication of Titanium Oxides Coating on 316L Stainless Steel via Laser Powder Bed Fusion

Xiao Wang, Weiwei Zhou, Naoyuki Nomura

日本金属学会秋期講演大会（第175回）　2024/09/18
放電プラズマ焼結によるMXene/Ag基複合材料の作製と評価

久保樹, 周偉偉, 野村直之

日本金属学会秋期講演大会（第175回）　2024/09/18
Advanced Powder Fabrication Techniques for Laser Powder Bed Fusion Invited

Naoyuki Nomura

ICCES2024　2024/08/06
Influence of different additions on the fabricability of laser powder bed fusion of pure aluminum

Zhenxing Zhou, Weiwei Zhou, Naoyuki Nomura

粉体粉末冶金協会春季大会（第133回）　2024/05/23
Effect of heat treatment on the microstructure and mechanical properties of nanocarbon-added Ti alloys fabricated by laser powder bed fusion

Mingqi Dong, Weiwei Zhou, Naoyuki Nomura

粉体粉末冶金協会春季大会（第133回）　2024/05/23
凍結乾燥パルス圧力印加オリフィス噴射法とプラズマ球状化処理を用いたMoSiBTiC合金の組成制御による破壊強度の評価

金村稜, 周振興, 周偉偉, 野村直之

粉体粉末冶金協会春季大会（第133回）　2024/05/23
Experimental and finite element method simulation study of a Ti-6Al-4V micro-powder under compression testing

Tao ZHANG, Weiwei Zhou, Naoyuki Nomura

粉体粉末冶金協会春季大会（第133回）　2024/05/23
ナノカーボン分散強化型Al複合材料の界面制御と高機能化に関する研究

周偉偉, 野村直之, 川崎亮

粉体粉末冶金協会春季大会（第133回）　2024/05/22
レーザ粉末床溶融結合法を用いたCuO添加生体用Ti合金の作製と評価

新村彩, 董明琪, 陳鵬, 周偉偉, 野村直之

粉体粉末冶金協会春季大会（第133回）　2024/05/21
酸化処理を用いた積層造形用Ti-6Al-4V合金粉末の流動性制御

掛川直樹, 周偉偉, 野村直之

粉体粉末冶金協会春季大会（第133回）　2024/05/21
積層造形用Ti-6Al-4V合金粉末の粉末間付着力に及ぼす酸化処理の影響

掛川直樹, 周偉偉, 野村直之

軽金属学会春期大会（第146回）　2024/05/11
Effects of different additions on the laser additive manufacturability of pure aluminum

Zhenxing ZHOU, Weiwei ZHOU, Naoyuki NOMURA

日本金属学会春期講演大会（第174回）　2024/03/14
Effects of heat treatments on the microstructure and mechanical properties of nanocarbon-added Tialloys fabricated by additive manufacturing

董明琪, 周偉偉, 野村直之

日本金属学会春期講演大会（第174回）　2024/03/14
酸化処理による積層造形用Ti-6Al-4V合金粉末の流動性の変化

掛川直樹, 周偉偉, 野村直之

日本金属学会春期講演大会（第174回）　2024/03/14
レーザ粉末床溶融結合法を用いたCuO添加生体用Ti合金の作製

新村彩, 董明琪, 陳鵬, 周偉偉, 野村直之

日本金属学会春期講演大会（第174回）　2024/03/12
Finite element analysis of Ti-6Al-4V micro-powder via compression test

張涛, 周偉偉, 野村直之

日本金属学会春期講演大会（第174回）　2024/03/12
Composition optimization of MoSiBTiC alloys through freeze-dry pulsated orifice ejection method and plasma spheroidization for additive manufacturing

Weiwei ZHOU, Ryo Kanamura, Zhenxing Zhou, Naoyuki Nomura

MRM2023　2023/12/12
Powder Fabrication and Laser Powder Bed Fusion of MoSiBTiC Alloy

Chenguang Li, Zhenxing Zhou, Weiwei Zhou, Naoyuki Nomura

MRM2023　2023/12/12
Challenges in composite powder development and laser additive manufacturing Invited

Naoyuki NOMURA

APMA2023　2023/11/29
Recent advances on powder development and evaluation for additive manufacturing

Nomura, Naoyuki

PRICM11　2023/11/20
Fabrication of spherical ZeO2-Al23 composites powders bu freeze-dry pulsated orifice ejection method for laser powder bed fusion

Nomura, Naoyuki

CMSTF2023　2023/11/16
Laser powder bed fusion of graphene oxide decorated β‐Ti alloy powders

Weiwei Zhou, Yu Zhang, Mingqi Dong, Naoyuki Nomura

CMSTF2023　2023/11/15
Fabrication of La doped SrTiO3 thermoelectric materials by laser additive manufacturing

2023/10/20
Effects of heat treatment for Ti-6Al-4V alloy powder on the cohesion and powder bed condition for laser powder bed fusion

2023/10/20
Changes in powder properties of low-cost Ti-6Al-4V alloy by controlling Al content

2023/10/20
Preparation of SiO2-decorated stainless-steel powders by hetero-agglomeration method and their laser additive manufacturing

2023/10/19
Fabrication and evaluation of ZrO2-TiC composite coatings on Mo-based alloy by laser powder bed fusion

2023/10/19
Fabrication of graphene/SrTiO3 Nanocomposite for Enhanced Thermoelectric and Mechanical Performance

Zhenxing Zhou, Weiwei Zhou, Akira, Kawasaki, Naoyuki Nomura

JSPMIC2023　2023/10/18
Creation of multilayer MXene-reinforced silver matrix composites

Weiwei Zhou, Yunsong Xu, Naoyuki Nomura

JSPMIC2023　2023/10/18
Nanoceramic decoration of metal powders for additive manufacturing by nanobubble-assisted heteroagglomeration

Mingqi Dong, Weiwei Zhou, Suxia Guo, Naoyuki Nomura

JSPMIC2023　2023/10/18
Effects of powder surface conditions on the flowability of Ti–6Al–4V alloy powders for additive manufacturing

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

JSPMIC2023　2023/10/17
チタン粉末の表面修飾によるレーザー積層造形性と力学的機能の向上 Invited

周偉偉, 董明琪, 野村直之

鉄鋼協会秋季講演大会(第186回)　2023/09/20
ヘテロ凝集法によるY2O3修飾ステンレス鋼粉末の作製とそのレーザ積層造形

藤田盛冶, 周偉偉, 野村直之

日本鉄鋼協会秋季講演大会（第186回）　2023/09/20
レーザ粉末床溶融結合法による酸化グラフェン添加β型Ti合金の作製と特性評価

張宇, 董明琪, 周偉偉, 石本卓也, 小泉雄一郎, 中野貴由, 野村直之

日本金属学会秋期講演大会（第173回）　2023/09/21
Fabrication of composite powders for laser additive manufacturing

Naoyuki NOMURA, Weiwei Zhou, Mingqi Dong, Zhenxing Zhou

日本金属学会秋期講演大会（第173回）　2023/09/21
Effect of Post-treatments on the Microstructure Evolution of MoSiBTiC Powders Produced by Freeze-dry Pulsated Orifice Ejection Method

Zhenxing Zhou, Weiwei Zhou, Naoyuki Nomura

日本金属学会秋期講演大会（第173回）　2023/09/20
Effects of heat treatment on the microstructural evolution of nanocarbon-added Ti alloy by additive manufacturing

董明琪, 周偉偉, 野村直之

日本金属学会秋期講演大会（第173回）　2023/09/20
レーザ粉末床溶融結合法により作製したNiTiワイヤーの特性評価

片桐大智, 周偉偉, 野村直之, 安藤大輔, 須藤祐司

日本金属学会秋期講演大会（第173回）　2023/09/20
Simulation study of microstructural evolution in Fe/Al multi-material system manufactured by Directed Energy Deposition (DED)

Tao ZHANG, Weiwei ZHOU, Hao WANG, Kenta AOYAGI, Kenta YAMANAKA, Akihiko CHIBA, Naoyuki NOMURA

日本金属学会秋期講演大会（第173回）　2023/09/20
凍結乾燥パルス圧力印加オリフィス噴射法を用いたAl2O3-ZrO2球状粉末の作製と複合セラミックスコーティング

石村太世, 周偉偉, 野村直之

日本金属学会秋期講演大会（第173回）　2023/09/19
Fabrication of MoSiBTiC alloy powders using freeze-dry pulsated orifice ejection method and plasma spheroidization for additive manufacturing

Naoyuki Nomura

Beyond Nickel-Based Superalloys Ⅳ International Canfarence（BNBS2023）　2023/06/28
Improvement of laser additive manufacturability of titanium alloy powder by nanocarbon decoration

Mingqi Dong, Weiwei Zhou, Naoyuki Nomura

World Titanium Conference2023(Ti-2023)　2023/06/13
Nanoceramic Modifi cation of Titanium Alloy Powder for Laser Additive Manufacturing by Nanobubble AqueousSolution

Weiwei Zhou, Mingqi Dong, Naoyuki Nomura

World Titanium Conference2023(Ti-2023)　2023/06/12
Achieving high-performance graphene/Al matrix composites by trace powder alloying

Weiwei ZHOU, Naoyuki NOMURA

粉体粉末冶金協会春季大会（第131回）　2023/06/08
凍結乾燥パルス圧力印加オリフィス噴射法とプラズマ球状化処理を用いたMoSiBTiC合金の組成最適化への試み

金村稜, 周振興, 周偉偉, 野村直之

粉体粉末冶金協会春季大会（第131回）　2023/06/08
積層造形用Ti-6Al-4V合金粉末の粉末間付着力に作用する表面酸化皮膜の影響

掛川直樹, 七海詩音, 周偉偉, 野村直之

粉体粉末冶金協会春季大会（第131回）　2023/06/08
Microstructure and mechanical properties of carbon-added titanium by laser powder bed fusion

Mingqi Dong, Weiwei Zhou, Naoyuki Nomura

粉体粉末冶金協会春季大会（第131回）　2023/06/07
Ti-6Al-4V合金粉末の流動性に及ぼす表面処理の影響

掛川直樹, 七海詩音, 周偉偉, 野村直之

日本金属学会春期講演大会（第172回）　2023/03/07
Fabrication of MXene-added Ti-6Al-4V alloy by laser powder bed fusion

Yu Zhang, Mingqi Dong, Weiwei Zhou, Naoyuki Nomura

日本金属学会春期講演大会（第172回）　2023/03/07
Fabrication of high-performance Ti6Al4V/rGO composites with three-dimensional network structures by hetero-agglomeration process and spark plasma sintering

Zhenxing Zhou, Weiwei Zhou, Naoyuki Nomura

日本金属学会春期講演大会（第172回）　2023/03/10
レーザ粉末床溶融結合法を用いたMo合金へのZrO2コーティングの作製

野村直之, 村松兼志, 周偉偉

日本金属学会春期講演大会（第172回）　2023/03/10
Microstructure and mechanical property of additive-manufactured Al-Ti alloys

Weiwei ZHOU, Zhenxing ZHOU, Naoyuki NOMURA

日本金属学会春期講演大会（第172回）　2023/03/10
Ti6Al4V 合金に挑む Invited

野村直之

令和4年度軽金属学会東北支部講演会およびイブニングセミナー「医用材料における軽金属の役割」　2023/03/06
Fabrication and Characterization of MXene/Ag Composites

2022/11/16
Achieving high-performance Ti6Al4V/graphene composites through an interface reaction control

Zhenxing Zhou, Weiwei Zhou, Mingqi Dong, Naoyuki Nomura

粉体粉末冶金協会秋季大会（第130回）　2022/11/16
Laser powder bed fusion of high-strength Al-Ti alloys

Weiwei ZHOU, Zhenxing ZHOU, Naoyuki NOMURA

粉体粉末冶金協会秋季大会（第130回）　2022/11/16
Extraordinary strengthening effect of graphene oxide in pure titanium by additive manufacturing

Mingqi Dong, Weiwei Zhou, Suxia Guo, Naoyuki Nomura

粉体粉末冶金協会秋季大会（第130回）　2022/11/16
Microstructure and mechanical properties of MXene-added Ti-6Al-4V alloy fabricated by laser powder bed fusion

Yu Zhang, Weiwei Zhou, Mingqi Dong, Naoyuki Nomura

粉体粉末冶金協会秋季大会（第130回）　2022/11/16
Fabrication and evaluation of NiTi alloy builds fabricated by laser powder bed fusion

2022/11/16
Control of oxides formation in the L-PBF builds using oxidized stainless-steel powders

2022/11/16
Fabrication of ceramics coating on MoSiBTiC alloy by laser powder bed fusion

2022/11/17
The effect of surface treatment on flowability of Ti-6Al-4V alloy powders for additive manufacturing

2022/11/17
Laser additive manufacturing and characterization of GO-added Co-Cr-Mo alloy

2022/11/17
Laser powder bed fusion of carbon nanotube and Ti decorated Mo powders

Suxia GUO, Weiwei ZHOU, Naoyuki NOMURA

粉体粉末冶金協会秋季大会（第130回）　2022/11/17
レーザ積層造形法により作製した316L 造形体に及ぼす粉末酸化の影響

渡邊直樹, 周偉偉, 野村直之

鉄鋼協会秋季講演大会(第184回)　2022/09/21
Nanobubble Water Promoted Uniform Dispersion of Nanoceramic-decorated Metal Powders for 3D Printing

Mingqi Dong, Weiwei Zhou, Naoyuki Nomura

日本金属学会秋期講演大会（第171回）　2022/09/23
Effects of plasma spheroidization on the characteristic of MoSiBTiC powders produced by freeze-dry pulsated orifice ejection method (FD-POEM)

Zhenxing ZHOU, Weiwei ZHOU, Naoyuki NOMURA

日本金属学会秋期講演大会（第171回）　2022/09/23
Powder fabrication and laser powder bed fusion of MoSiBTiC alloy

Chenguang Li, Zhenxing Zhou, Weiwei Zhou, Naoyuki Nomura

日本金属学会秋期講演大会（第171回）　2022/09/23
A novel method of regulating slurry dispersibility by nanobubbles water during freeze-dry pulsated orifice ejection method process

Suxia GUO, Zhenxing ZHOU, Weiwei ZHOU, Naoyuki NOMURA

日本金属学会秋期講演大会（第171回）　2022/09/23
Additive Manufacturingにおける粉末開発と敷設挙動における新展開 Invited

野村直之

日本金属学会2022年秋期（第171回）講演大会　2022/09/23
積層造形用チタン合金粉末の付着力におよぼす熱処理の影響

七海詩音, 周偉偉, 野村直之

日本金属学会秋期講演大会（第171回）　2022/09/20
レーザ粉末床溶融結合法の造形パラメータがNiTi造形体の超弾性特性に与える影響

片桐大智, 中谷勇喜, 周偉偉, 野村直之, 安藤大輔, 須藤祐司, 田邊由紀子, 阿部吉彦

日本金属学会秋期講演大会（第171回）　2022/09/20
リコーティング実験とシミュレーションによる粉末床溶融結合法用Ti-6Al-4V合金粉末の流動性評価 Invited

野村直之, 増田呼人, 周偉偉

粉体粉末冶金協会春季大会（第129回）　2022/05/25
レーザ粉末床溶融結合法を用いたMoへのAl2O3-ZrO2共晶セラミックスコーティングの作製

村松兼志, 野村直之, 周偉偉, 林直志

粉体粉末冶金協会春季大会（第129回）　2022/05/25
Preparation of nanoparticle-decorated metal powders via hetero-agglomeration for laser additive manufacturing

Mingqi DONG, Weiwei ZHOU, Naoyuki NOMURA

粉体粉末冶金協会春季大会（第129回）　2022/05/25
Interfacial reaction induced high-performance graphene/Al matrix composites for electric conductor

Weiwei ZHOU, Kousuke OSANO, Naoyuki NOMURA

粉体粉末冶金協会春季大会（第129回）　2022/05/26
A novel method of improving slurry dispersibility by nanobubbles water during FD-POEM process

Suxia GUO, Mio SHINKAI, Zhenxing ZHOU, Weiwei ZHOU, Naoyuki Nomura

粉体粉末冶金協会春季大会（第129回）　2022/05/26
Plasma Spheroidization of MoSiBTiC Powders Produced by Freeze-dry Pulsated Orifice Ejection Method (FD-POEM)

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

粉体粉末冶金協会春季大会（第129回）　2022/05/26
Powder fabrication and laser powder bed fusion of ceramics-added MoSiBTiC alloy

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

粉体粉末冶金協会春季大会（第129回）　2022/05/26
積層造形用ステンレス鋼粉末の諸特性におよぼす酸化の影響

野村直之, 周偉偉

第79回日本歯科理工学会学術講演会　2022/05/21
Laser powder bed fusion of Mo-Ti alloys using elemental powder

Suxia GUO, Zhenxing ZHOU, Weiwei ZHOU, Naoyuki NOMURA

日本金属学会春期講演大会（第170回）　2022/03/17
Effect of severe oxidation on the powder properties and melting behaviors of stainless-steels for laser powder bed fusion

Weiwei ZHOU, Naoyuki NOMURA

日本金属学会春期講演大会（第170回）　2022/03/17
Structural evolution mechanism during laser powder bed fusion of graphene oxide/Ti alloy powders

Mingqi Dong, Weiwei Zhou, Naoyuki Nomura

日本金属学会春期講演大会（第170回）　2022/03/17
Plasma Spheroidization Treatment of MoSiBTiC Powders Produced by Freeze-dry Pulsated Orifice Ejection Method

Zhenxing ZHOU, Shunpei KATO, Weiwei ZHOU, Naoyuki Nomura

日本金属学会春期講演大会（第170回）　2022/03/17
Laser additive manufacturing of carbon-coated titanium alloy powders

Mingqi Dong, Weiwei Zhou, Naoyuki Nomura

MRM2021　2021/12/13
Bioinspired low-magnetic Zr-1Mo alloy with high strength and ductility

WEIWEI ZHOU, Yusuke Tsutsumi, Naoyuki Nomura, Takao Hanawa

MRM2021　2021/12/13
凍結乾燥パルス圧力印加オリフィス噴射法により作製したMoSiBTiC粒子の形成過程観察

加藤駿平, 周振興, 周偉偉, 野村直之

第4回日本金属学会第７分野講演会　2021/12/11
レーザ粉末床溶融結合法を用いたMo合金へのZrO2コーティングの作製

村松兼志, 周偉偉, 野村直之

第4回日本金属学会第７分野講演会　2021/12/11
Effects of process parameters on particle fabrication using the freeze-dry pulsated orifice ejection method (FD-POEM)

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

粉体粉末冶金協会秋季大会（第128回）　2021/11/09
Structural evolution during 3D-printing of MXene-reinforced metal matrix composites

Weiwei ZHOU, Zhenxing Zhou, Suxia Guo, Naoyuki Nomura

粉体粉末冶金協会秋季大会（第128回）　2021/11/09
Laser powder bed fusion processing of hierarchical Mo-Ti alloy powders

Suxia Guo, Weiwei Zhou, Zhenxing Zhou, Naoyuki Nomura

粉体粉末冶金協会秋季大会（第128回）　2021/11/09
粉末酸化がおよぼすステンレス鋼造形体の表面と内部への影響

渡邊直樹, 周偉偉, 野村直之

粉体粉末冶金協会秋季大会（第128回）　2021/11/09
レーザ粉末床溶融結合法を用いたMoへの緻密ZrO2皮膜の作製と評価

村松兼志, 周偉偉, 野村直之

粉体粉末冶金協会秋季大会（第128回）　2021/11/09
Fabrication of Carbon-added Ti-6Al-4V Alloy by Laser Powder Bed Fusion

2021/11/09
積層造形用Ti合金粉末の粉末床評価

増田呼人, 和田大輝, 鎌田航平, 周偉偉, 岡村治幸, 大西隆, 野村直之

日本金属学会春期講演大会（第168回）　2021/09/17
Influence of Sintering on MoSiBTic Powders Produced by Freeze-dry Pulsated Orifice Ejection Method

ZHENXING ZHOU, Shunpei KATO, Weowei ZHOU, Naoyuki NOMURA

2021/09/17
カーボンナノチューブ強化Al基複合材料の作製と界面制御に関する研究 Invited

周偉偉, 野村直之, 川崎亮

日本金属学会春期講演大会（第168回）　2021/09/15
レーザ粉末床溶融結合法を用いたMo合金へのZrO2コーティングの作製

村松兼志, 周偉偉, 野村直之

日本金属学会春期講演大会（第168回）　2021/09/14
レーザ粉末床溶融結合法によるステントの作製

中谷勇喜, 周偉偉, 野村直之

日本金属学会春期講演大会（第168回）　2021/09/14
酸化被膜形成と酸化物分散を実現するステンレス鋼積層造形体の作製

渡邊直樹, 周偉偉, 野村直之

日本金属学会春期講演大会（第168回）　2021/09/14
凍結乾燥パルス圧力付加オリフィス噴射法により作製したMoSiBTiC粒子の形成過程観察

加藤駿平, 周振興, 清野雄太, 周振興, 周偉偉, 野村直之

日本金属学会春期講演大会（第168回）　2021/09/14
Simultaneously enhanced dispersion and interfacial adhesion in Al matrix composites reinforced with nanoceramic-decorated carbon nanotubes

Weiwei ZHOU, Naoyuki NOMURA

2021/06/01
Formation Mechanism of Powder Particles Fabricated by Freeze-dry Pulsated Orifice Ejection Method

Zhenxing ZHOU, Yuta SEINO, Suxia GUO, Weiwei ZHOU, Naoyuki NOMURA

2021/06/01
界面反応の制御による高性能Al/graphene複合材料の作製

小佐野公佑, 周偉偉, 野村直之

軽金属学会春期大会（第140回）　2021/05/15
レーザ三次元粉末積層造形法による炭素を添加したTi基複合材料の作製

董明琪, 周偉偉, 野村直之

軽金属学会春期大会（第140回）　2021/05/15
Significant strengtheing effect in MXene-reinforced Al matrix composites

周偉偉, 野村直之

2021/05/15
Challenges of powder fabrication for additive manufacturing Invited

Naoyuki Nomura

1st French-Japanese Workshop on Additive Manufacturing　2021/05/12
Removal of oxigen from FD-POEMed-Mo powders for laser additive manufaturing

Suxia GUO, Zhenxing ZHOU, Weiwei ZHOU, Naoyuki NOMURA

2021/03/19
Effect of Freeze-dry Pulsated Orifice Ejection Method(FD-POEM)Parameters on the Powders Properties

ZHENXING ZHOU, Suxia GUO, Weiwei ZHOU, Kyousuke YOSHIMI, Naoyuki Nomura

2021/03/19
Laser additive maunfaturing of MXene/Al matrix composites

Weiwei ZHOU, Zhenxing ZHOU, Naoyuki Nomura

2021/03/19
積層造形用チタン合金粉末の特性および粉末床状態の評価

鎌田航平, 増田呼人, 和田大輝, 周偉偉, 野村直之

日本金属学会春期講演大会（第168回）　2021/03/18
Microstructure and mechanical properties of gaphene oxide/titanium composites fabricated by laser additive manufacturing

Dong Mingqi, Zhou Weiwei, Nomura Naoyuki

2021/03/18
粉末積層３ D 技術と HIP 処理の重要性 Invited

野村直之

熱間等方加圧処理(ＨＩＰ)技術ワーキンググループ設立講演会　2021/01/27
Challenges of composite powder fabrication for additive manufacturing Invited

Naoyuki Nomura, Weiwei Zhou

e-ASIA Joint Research Program Online Workshop on Materials Informatics　2021/01/13
Challenges of composite powder fabrication for additive manufacturing Invited

NOMURA Naoyuki,ZHOU Weiwei

The 4th Symposium for The Core Research Cluster for Materials Science and the 3rd Symposium on International Joint Graduate Program in Materials Science　2020/11/16
金属粉末積層造形における粉末の役割 Invited

野村直之

第71回塑性加工連合講演会　2020/11/15
Laser additive manufacturing of oxide-dispersion-strengthened pure molybdenum using FD-POEM powdersadditive manufacturing of oxide-dispersion-strengthened pure molybdenum usiLaser ng FD-POEM powders

Suxia GUO, Zhenxing ZHOU, Weiwei ZHOU, Naoyuki NOMURA

2020/09/18
In-situ formation of ceramic layer on Mo-based composites by laser additive manufacturing（15＋5）

2020/09/18
レーザ積層造形用 Cu-Cr-Zr 合金粉末の粉末特性とその造形体の機械的性質に及ぼすCr 量の影響

結城弦太, 周偉偉, 野村直之

日本金属学会秋期講演大会（第167回）　2020/09/18
Microstructure and Densification Behavior of Gas Atomized and Water Atomized Powders of CoCrMo Alloys Produced by Laser Powder Bed Fusion

Rindang Fajarin, Weiwei Zhou, Naoyuki Nomura

2020/09/18
Comparative study of Ti matrix composites fabricated by laser powder bed fusion and spark plasma sintering

2020/09/18
Microstructure and Mechanical Properties of MoSiBTiC alloy Produced from FD-POEM Powder via Laser Powder Bed Fusion and Spark Plasma Sintering

Zhenxing ZHOU, Shunpei KATO, Yuta SEINO, Suxia GUO, Weiwei ZHOU, Kyosuke YOSHIMI, Naoyuki NOMURA

2020/09/17
レーザ3次元粉末積層造形法によるMoSiBTiC合金の作製 Invited

野村直之

日本金属学会秋期講演大会（第167回）　2020/09/17
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

日本金属学会秋期講演大会（第167回）　2020/09/15
低磁性Al/graphene複合材料の作製

小佐野公佑, 周偉偉, 野村直之

日本金属学会秋期講演大会（第167回）　2020/09/15
積層造形用Ti合金粉末の流動性評価

増田呼人, 鎌田航平, 周偉偉, 野村直之

日本金属学会秋期講演大会（第167回）　2020/09/15
凍結乾燥POEM法による積層造形用合金粉末の開発 Invited

野村直之

｢低炭素社会を実現する先端的耐熱材料・軽量材料の開発｣ 2020 公開シンポジウム－社会実装に向けたALCA耐熱・軽量材料の成果発表会－　2020/09/14
Recent advances of;additive manufacturing on metallic dental materials Invited

2020/09/13
金属積層造形における粉末の役割 Invited

野村直之

日本金属学会・日本鉄鋼協会中国四国支部第135回金属物性研究会　2019/12/19
バイオマテリアルと粉体粉末冶金 Invited

野村直之

第2回日本金属学会第7分野講演会「金属系バイオマテリアルサイエンスの新展開(Ⅱ)」　2019/12/08
AM用材料の最新動向―高機能材料の開発に向けて Invited

野村直之

メカトロテックジャパン２０１９金属Additive Manufacturingセミナー　2019/10/25
Fabrication of monodispersed MoSiBTiC particles by Freeze‐Dry Pulsated Orifice Ejection Method

Zhenxing Zhou, Yuta Seino, Weiwei Zhou, Naoyuki Nomura

2019/10/23
Comparative study of in-situ Al4C3/Al composites produced by laser additive manufacturing and powder metallurgy

Weiwei Zhou, Naoyuki Nomura, Akira Kawasaki

2019/10/22
レーザ積層造形法により作製された MoSiBTiC合金の組織と機械的性質に及ぼす HIP処理の影響

野村直之, 周偉偉, 吉見享祐, 川崎亮

粉体粉末冶金協会2019年度秋季大会（第124回講演大会）　2019/10/22
生体用低磁性ジルコニウム合金の開発 Invited

野村直之

東北大学金属材料研究所共同研究ワークショップ日本バイオマテリアル学会東北ブロック講演会　2019/10/02
Zr-Nb-Ta-Mo合金の磁化率および機械的性質に及ぼすTaの影響

小池拓実, 蘆田茉希, 堤祐介, 野村直之, 陳鵬, 下条雅幸, 塙隆夫

日本金属学会第165回秋期講演大会　2019/09/13
レーザ三次元粉末積層造形法により作製されたステンレス鋼造形体に及ぼす粉末酸化の影響

野村直之, 高瀬仁菜, 周偉偉, 菊池圭子

日本金属学会第165回秋期講演大会　2019/09/12
Laser powder bed fusion processing of in situ TiC/Ti-based composites

ZHOU Weiwei, Kamata Kohei, Kikuchi Keiko, Nomura Naoyuki, Kawasaki Akira

2019/09/12
Characterization of Gas and Water Atomized Co-Cr-Mo Alloy Powders for Laser Powder Bed Fusion

Fajarin Rindang, Zhou Weiwei, Nomura Naoyuki

2019/09/12
Influence of hot isostatic pressing on microstructure and fracture toughness of MoSiBTiC alloy by laser powder bed fusion

ZHOU ZHENXING, ZHOU WEIWEI, Kikuchi Keiko, Nomura Naoyuki, Yoshimi Kyosuke, Kawasaki Akira

2019/09/11
凍結乾燥パルス圧力付加オリフィス噴射法による超高温耐熱材料の粉末作製と評価

清野雄太, 野村直之, 西垣航希

日本金属学会第165回秋期講演大会　2019/09/11
レーザ三次元粉末積層造形用Cu-Cr-Zr合金粉末のレーザ吸収率に及ぼすZr濃度の影響

結城弦太, 高坂天翔, 周偉偉, 野村直之

日本金属学会第165回秋期講演大会　2019/09/11
Fabrication of MoSiBTiC alloy by laser powder bed fusion International-presentation Invited

NOMURA Naoyuki

The 1st Global Forum on Smart Additive Manufacturing, Design & Evaluation (Smart MADE 2019)　2019/09/02
Microstructure and mechanical properties of low magnetic Zr-1Mo alloy for biomedical applications International-presentation Invited

Naoyuki Nomura, Xiaohao Sun, Weiwei Zhou, Keiko Kikuchi, Yusuke Tsutsumi, Takao Hanawa, Akira Kawasaki

The 10th Pacific Rim International Conference on Advanced Materials and Processing (PRICM10)　2019/08/22
Microstructure and mechanical properties of Cu-Cr-Zr alloys fabricated by powder bed fusion process using fiber laser International-presentation Invited

Naoyuki Nomura, Takato Kousaka, Shinichi Moriya, Takayuki Nakamoto, Takahiro Kimura, Keiko Kikuchi, Akira Kawasaki

The 10th Pacific Rim International Conference on Advanced Materials and Processing (PRICM10)　2019/08/21
Microstructure and mechanical properties of additively manufactured Zr-1Mo alloy for biomedical applications International-presentation Invited

NOMURA Naoyuki

4th International Conference on Innovations in Biomaterials, Biomanufacturing, and Biotechnologies (Bio-4)　2019/07/23
Effect of Zr addition on the microstructure and mechanical properties of additively manufactured Cu-Cr-Zr alloys International-presentation Invited

NOMURA Naoyuki

2nd Global Forum on Advanced Materials and Technologies for Sustainable Development (GFMAT-2)　2019/07/22
Fabrication of MoSiBTiC alloy by laser powder bed fusion International-presentation Invited

NOMURA Naoyuki

2019/06/17
Formation of in-situ ceramic protective layer on strengthened Mo-based composite builds by laser powder bed fusion

ZHOU WEIWEI, KIKUCHI KEIKO, NOMURA NAOYUKI, KAWASAKI AKIRA

粉体粉末冶金協会令和元年度春期大会（第123回講演大会）　2019/06/06
凍結乾燥パルス圧力オリフィス噴射法を用いた積層造形用MoSi系複合粉末の作製

野村直之, 西垣航希, 安田直浩, 周偉偉, 菊池圭子, 川崎亮

粉体粉末冶金協会令和元年度春期大会（第123回講演大会）　2019/06/06
レーザ三次元粉末積層造形用Cu-Cr-Zr合金粉末の表面構造とレーザ吸収率の関係

結城弦太, 高坂天翔, 周偉偉, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会令和元年度春期大会（第123回講演大会）　2019/06/06
チタン合金粉末の粉末床特性に及ぼすリコーティング速度の影響

菊池圭子, 谷藤優太, 周偉偉, 野村直之, 川崎亮

粉体粉末冶金協会令和元年度春期大会（第123回講演大会）　2019/06/06
レーザ三次元粉末積層造形法によるTi／TiC in-situ複合材料の作製

鎌田航平, 周偉偉, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会令和元年度春期大会（第123回講演大会）　2019/06/06
球形金属ガラス粒子の粘性流動成形加工によるマイクロダイヤフラムの作製

吉年規治, 伊佐野はるか, 山田類, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会令和元年度春期大会（第123回講演大会）　2019/06/05
積層造形法による生体用低磁性 Zr 合金の開発 Invited

野村直之

日本塑性加工学会東関東支部第56回技術懇談会　2019/04/19
粉末床溶融結合法におけるチタン合金粉末の流動性評価

菊池圭子, 谷藤優太, 野村直之, 川崎亮

日本金属学会第164回春期講演大会　2019/03/21
In-situ fabrication of TiC/Ti-based composites by laser powder bed fusion process

Weiwei Zhou, Kohei Kamata, 菊池圭子, 野村直之, 川崎亮

日本金属学会第164回春期講演大会　2019/03/21
凍結乾燥パルス圧力オリフィス噴射法による積層造形用単分散粒子の作製

野村直之, 西垣航希, 安田直浩, 周偉偉, 菊池圭子, 吉見享祐, 川崎亮

日本金属学会第164回春期講演大会　2019/03/21
積層造形による金属基複合材料の作製

野村直之

第12回ナノ物質集積複合化技術研究会　2019/03/01
積層造形法による医療⽤⾦属材料の開発 Invited

野村直之

東京医科歯科大学生体材料工学研究所第218回IBBセミナー　2019/01/21
積層造形による金属基複合材料の作製 Invited

野村直之

大阪大学接合科学研究所東京セミナー「アディティブ・マニュファクチャリングにおける素材創成と溶接・接合」　2018/11/26
レーザ三次元粉末積層造形法により作製した Cu-Cr-Zr合金造形体に及ぼす熱処理の影響

高坂天翔, 菊池圭子, 野村直之, 森谷信一, 中本貴之, 木村貴広, 川崎亮

粉体粉末冶金協会平成30年度秋季大会（第122回講演大会）　2018/10/31
ステンレス鋼粉末の溶融挙動に及ぼす酸素含有量とレーザ吸収率の影響

高瀬仁菜, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会平成30年度秋季大会（第122回講演大会）　2018/10/31
凍結乾燥パルス圧力付加オリフィス噴射法(FD-POEM)を用いた ZrO2単分散粒子の作製

西垣航希, 安田直浩, 周偉偉, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会平成30年度秋季大会（第122回講演大会）　2018/10/31
粉末床溶融結合法におけるチタン粉末流動性評価

谷藤優太, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会平成30年度秋季大会（第122回講演大会）　2018/10/31
Fe系非晶質単粒子のナノ組織制御と磁気特性評価

峯岸剛太, 菊池圭子, 野村直之, 山田類, 吉年規治, 川崎亮

粉体粉末冶金協会平成30年度秋季大会（第122回講演大会）　2018/10/30
コロイドプロセスを用いた Mg2Si/CNT複合ナノファイバーの合成と評価

菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会平成30年度秋季大会（第122回講演大会）　2018/10/30
レーザ積層造形法における異方性制御を目的とした熱処理条件の検討

加嶋祐佳, 高市敦士, Nuttaphon Kittikundecha, 蘆田茉希, 野村直之, 塙隆夫, 若林則幸, 川崎亮

日本金属学会第163回秋期講演大会　2018/09/20
Design for the additive manufacture of functionally graded metastable β-type Zr-Nb-Sn alloy with tailored mechanical properties for biomedical applications

トルンゴズデン, 菊池圭子, 野村直之, 川崎亮

2018/09/19
ステンレス鋼粉末の溶融挙動に及ぼす酸素含有量の影響

高瀬仁菜, 菊池圭子, 野村直之, 川崎亮

日本金属学会第163回秋期講演大会　2018/09/19
レーザ三次元粉末積層造形法により作製したCu-Cr-Zr合金造形体に及ぼすZr添加量の影響

高坂天翔, 菊池圭子, 野村直之, 森谷信一, 中本貴之, 木村貴広, 川崎亮

日本金属学会第163回秋期講演大会　2018/09/19
Effect of process parameters on the pore formation in a low magnetic Zr-based alloy fabricated by powder bed fusion process using fiber laser International-presentation

Naoyuki Nomura, Xiaohao Sun, Weiwei Zhou, Keiko Kikuchi, Akira Kawasaki

WORLDPM2018　2018/09/18
金属基複合材料の積層造形 Invited

野村直之

粉末積層３D造形技術委員会・等方圧加工技術委員会合同委員会　2018/09/07
Development of Alloy powders for Additive Manufacturing by FD-POEM Invited

NOMURA Naoyuki

2018/08/29
Effect of heat treatment temperature on microstructure and fatigue strength of Co-Cr-Mo alloy clasps prepared by selective laser melting

Nuttaphon Kittkundecha, Yuka Kajima, Atsushi Takaichi, Hisashi Doi, Naoyuki Nomura, Hidekazu, Takahashi, Takao Hanawa, Noriyuki Wakabayashi

2018/08/24
レーザ積層造形法で製作したCoCrMo合金への熱処理条件の検討

加嶋祐佳, 高市敦士, Nuttaphon Kittkundecha, 野村直之, 塙隆夫, 若林則幸, 川崎亮

日本バイオマテリアル学会東北ブロック講演会　2018/08/24
Trial of functionally-graded Zr-based alloy builds for biomedical applications International-presentation

Naoyuki Nomura, Torun Gözden, Keiko Kikuchi, Akira Kawasaki

15th International Symposium on Functionally Graded Materials (ISFGMs 2018)　2018/08/07
Additive Manufacturing of a Low Magnetic Zr Alloy for Biomedical Applications International-presentation Invited

NOMURA Naoyuki

The 71st IIW, Annual Assembly & International Conference　2018/07/17
Microstructure and mechanical properties of a low magnetic Zr-Mo alloy for biomedical applications International-presentation Invited

Naoyuki Nomura, Xiaohao Sun, Weiwei Zhou, Keiko Kikuchi, Akira Kawasaki, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

International Conference on Processing & Manufacturing of Advanced Materials (THERMEC’2018)　2018/07/13
生体用金属材料の積層造形 Invited

野村直之

製造技術のための３Dプリンティングー３D基盤技術の最新動向：講演＆見学会ー　2018/07/03

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パナソニック（株）エコソリューションズ社モノづくり革新本部生産技術センターB１１２階A会議室
Zr-1Mo合金の面外曲げ疲労特性に及ぼす加工・熱処理の影響

阿部太亮, 土居壽, 堤祐介, 野村直之, 陳鵬, 蘆田茉希, 塙隆夫

日本金属学会2018年春期講演大会（第162回）　2018/03/21
冷間スウェージング加工がZr-14Nb-5Ta-1Mo合金の磁化率と機械的性質に及ぼす影響

蘆田茉希, 本間航, 土居壽, 堤祐介, 野村直之, 陳鵬, 下条雅幸, 塙隆夫

日本金属学会2018年春期講演大会（第162回）　2018/03/21
Fabrication of MoSiBTiC alloy by laser powder bed fusion process

Weiwei ZHOU, Kengo Tsunoda, Xiaohao Sun, Keiko Kikuchi, Naoyuki Nomura, Kyosuke Yoshimi, Akira Kawasaki

Spring Meeting of The Japan Institute of Mertals and Materials (2018)　2018/03/20
Change in Young’s modulus of β-type Zr-Nb-Sn alloy build fabricated by laser powder bed fusion process for biomedical applications

Gozden TORUN, Naoyuki Nomura, Akira Kawasaki

Spring Meeting of The Japan Institute of Mertals and Materials (2018)　2018/03/20
Effect of heat treatment on microstructure and mechanical properties of Zr-1Mo alloy build fabricated by powder bed fusion process using a fiber laser

SUN XIAOHAO, ZHOU WEIWEI, 菊池圭子, 野村直之, 川崎亮, 上田恭介, 成島尚之, 土居寿, 堤祐介, 塙隆夫

日本金属学会2018年春期講演大会（第162回）　2018/03/20
レーザー積層造形法で製作したCo-Cr-Mo合金の異方性緩和を目的とした熱処理条件の検討

加嶋祐佳, 髙市敦士, Nuttaphon Kittkundecha, 野村直之, 高橋英和, 塙隆夫, 若林則幸, 川崎亮

日本金属学会2018年春期講演大会（第162回）　2018/03/20
粉末の流動性を考慮した離散要素法による粉末床形成シミュレーション

菊池圭子, Weiwei Zho, 野村直之, 川崎亮

日本金属学会2018年春期講演大会（第162回）　2018/03/20
レーザ積層造形による生体用低磁性Zr合金の開発 Invited

野村直之

日本金属学会2018年春期講演大会（第162回）　2018/03/20
電子ビーム積層造形の現状と周辺技術 Invited

野村直之

表面改質技術研究委員会 30 周年記念シンポジウム～多次元アディティブマニュファクチュアリング～　2018/03/01
Fabrication of Low Magnetic Zr-Based Alloy by Powder Bed Fusion Process Using Fiber Laser International-presentation Invited

NAOYUKI NOMURA

APICAM2017　2017/12/04
Microstructure and mechanical properties of β-type Zr-Nb-Sn alloy via powder bed fusion process using fiber laser

Torun Gözden, Kikuchi Keiko, Nomura Naoyuki, Kawasaki Akira

第39回日本バイオマテリアル学会大会　2017/11/20
Effect of hot isostatic pressing on the microstructure of Zr-1Mo alloy builds fabricated by powder bed fusion process using fiber laser

Sun Xiaohao, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

第39回日本バイオマテリアル学会大会　2017/11/20
Mechanical properties and magnetic susceptibility of swaged and heat-treated Zr-1Mo alloy

Zhou Weiwei, Kikuchi Keiko, Nomura Naoyuki, Kawasaki Akira, Doi Hisashi, Tsutsumi Yusuke, Hanawa Takao

第39回日本バイオマテリアル学会大会　2017/11/20
レーザ積層造形体の機械的性質に与える造形パラメータの影響 Invited

野村直之

第６２回材質制御研究会「金属粉末の積層造形技術の現状と開発動向」　2017/11/17
Effects of Zr content on the microstructures and mechanical properties of Cu-Cr-Zr alloy builds fabricated by powder bed International-presentation

Naoyuki NOMURA, Takato KOUSAKA, Shinichi MORIYA, Takayuki NAKAMOTO, Takahiro KIMURA, Keiko KIKUCHI, Akira KAWASAKI

JSPM International Conference on Powder and Powder Metallurgy ～60th Anniversary～ (JSPMIC2017)　2017/11/09
レーザー積層造形法においてオーバーハング部へのサポート構造の付与が疲労強度に与える影響

高市敦士, 加嶋祐佳, 中本貴之, 堤祐介, 野村直之, 高橋英和, 塙隆夫, 若林則幸

第70回日本歯科理工学会学術講演会　2017/10/15
Effect of post treatment on the microstructure of Zr-1Mo alloy builds fabricated by powder bed fusion process using fiber laser

Xiaohao Sun, Weiwei Zhou, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

東北大学金属材料研究所共同研究ワークショップ日本バイオマテリアル学会東北ブロック講演会　2017/09/25
Mechanical Properties of Beta-type Zr-alloy Builds Fabricated by Powder Bed Fusion Process using Fiber Laser

Torun Gözden, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki

東北大学金属材料研究所共同研究ワークショップ日本バイオマテリアル学会東北ブロック講演会　2017/09/25
Influence of heat treatment on mechanical properties and magnetic susceptibility of swaged Zr-1Mo alloy

Weiwei Zhou, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki, Doi Hisashi, Tsutsumi Yusuke, Hanawa Takao

東北大学金属材料研究所共同研究ワークショップ日本バイオマテリアル学会東北ブロック講演会　2017/09/25
Effects of HIP on porosity, microstructure and mechanical properties of Zr-1Mo alloy fabricated by powder bed fusion process using fiber laser

SUN XIAOHAO, 菊池圭子, 野村直之, 川崎亮, 土居壽, 堤祐介, 塙隆夫

日本金属学会2017年秋期講演大会（第161回）　2017/09/06

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発表日：９月８日
粉末床溶融結合法における粉末床形成シミュレーション

菊池圭子, 野村直之, 川崎亮

日本金属学会2017年秋期講演大会（第161回）　2017/09/06

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発表日：９月８日
Microstructure and mechanical properties of a Zr-Nb-Sn alloy via powder bed fusion process using fiber laser for biomedical applications

Gozden TORUN, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI

日本金属学会2017年秋期講演大会（第161回）　2017/09/06

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発表日：９月８日
Effect of heat treatment on the microstructure, mechanical properties and magnetic susceptibility of swaged Zr-1Mo alloy

Weiwei ZHOU, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

日本金属学会2017年秋期講演大会（第161回）　2017/09/06

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発表日：９月７日
Effects of building heights on microstructure, crystallographic orientation and vickers hardness of Zr-1Mo alloy fabricated by powder bed fusion process using fiber laser

孫小淏, 野村直之, 川崎亮, 土居壽, 堤祐介, 塙隆夫

日本鉄鋼協会第174回秋季講演大会　2017/09/06

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発表日：９月７日
Fe-Si-B-P-(Cu)系急冷単分散粒子のナノ結晶化挙動と磁気特性

吉年規治, 山田類, 大川舜平, 野村直之, 菊池圭子, 川崎亮

日本鉄鋼協会第174回秋季講演大会　2017/09/06

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発表日：９月７日
熱間鍛造Zr-14Nb-5Ta-1Mo合金の熱処理による機械的性質の変化

本間航, 堤祐介, 野村直之, 土居壽, 蘆田茉希, 陳鵬, 下条雅幸, 塙隆夫

日本金属学会2017年秋期講演大会（第161回）　2017/09/06

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発表日：９月７日
生体用ジルコニウム合金積層造形体の機能傾斜化への試み Invited

野村直之, 百瀬樹, 菊池圭子, 川崎亮

第28回新構造・機能制御と傾斜機能材料シンポジウム＜FGMs2017＞　2017/08/07

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8月8日発表名古屋工業大学4号館ホール
サスペンションプラズマ溶射法によるムライト皮膜の組織観察

土生陽一郎, 野田和男, 永尾美佳子, 野村直之, 菊池圭子, 川崎亮

第28回新構造・機能制御と傾斜機能材料シンポジウム＜FGMs2017＞　2017/08/07

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8月8日発表名古屋工業大学4号館ホール
サスペンションプラズマ溶射法によるムライト皮膜の熱伝導率評価

菊池圭子, 野村直之, 川崎亮, 土生陽一郎, 野田和男, 永尾美佳子, 伊藤義康

第28回新構造・機能制御と傾斜機能材料シンポジウム＜FGMs2017＞　2017/08/07

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8月8日発表名古屋工業大学4号館ホール
金属３D積層造形による高性能生体材料の開発 Invited

野村直之

講習会「最新３D積層造形技術」　2017/06/22

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金型・精密加工技術研究会山形県工業技術センター３F 講堂
Effects of Building Height on Microstructure, Crystallographic Orientation and Vickers Hardness of Zr-1Mo Alloy Fabricated by Powder Bed Fusion Process Using Fiber Laser

Xiaohao SUN, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI, Hisashi DOI, Yusuke TSUTSUMI, Takao HANAWA

粉体粉末冶金協会（平成29年度春季大会）　2017/05/31

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発表日：６月１日
レーザ三次元積層造形法により作製したCu-Cr-Zr合金造形体に及ぼすZrの影響

高坂天翔, 菊池圭子, 野村直之, 森谷信一, 中本貴之, 木村貴広, 川崎亮

粉体粉末冶金協会（平成29年度春季大会）　2017/05/31

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発表日：６月１日
レーザ三次元積層造形用MoSiBTiC-Al2O3複合粉末の作製

角田健吾, 松田幸人, 周偉偉, 菊池圭子, 野村直之, 川崎亮, 吉見享祐

粉体粉末冶金協会（平成29年度春季大会）　2017/05/31

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発表日：６月１日
Mg2Si/カーボンナノチューブ複合ナノファイバーの合成と形状制御

菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成29年度春季大会）　2017/05/31

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発表日：６月１日
FeCoSiBPアモルファス単粒子のナノ結晶化と磁気特性評価

吉年規治, 山田類, 峯岸剛太, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成29年度春季大会）　2017/05/31

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発表日：６月１日
Fabrication and Characterization of Zr-1Mo Alloy by Powder Bed Fusion Process Using Fiber Laser for Biomedical Applications International-presentation

Sun Xiaohao, Keiko Kikuchi, Naoyuki Nomura, Akira Kawasaki, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

4th International Conference on Powder Metallurgy in Asia　2017/04/09

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発表日：20170411, 10：50－11：10
レーザ三次元粉末積層造形法を用いた生体用低磁性β型Zr-Nb-Sn合金の組織と機械的性質

百瀬樹, 孫小淏, 菊池圭子, 野村直之, 川崎亮, 土居壽, 堤祐介, 塙隆夫

日本金属学会2017年春期講演大会（第160回）　2017/03/15

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発表日：３月１７日
レーザ積層造形に影響を与える諸因子 Invited

野村直之, 菊池圭子, 川崎亮

溶接学会第116回マイクロ接合研究委員会　2016/12/09
Mg2Si/カーボンナノチューブ複合ナノファイバーの合成と熱電変換材料への応用

菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成28年度秋季大会）　2016/11/09

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発表日：１１月９日
FeSiBP系単分散粒子の磁気特性とその組成依存性

大川舜平, 菊池圭子, 野村直之, 川崎亮, 山田類, 吉年規治, 牧野彰宏

粉体粉末冶金協会（平成28年度秋季大会）　2016/11/09

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発表日：１１月１０日
FeCoSiBNb系単分散粒子の過冷却液体の粘性係数とその組成依存性

青柳慶真, 菊池圭子, 野村直之, 川崎亮, 山田類, 吉年規治

粉体粉末冶金協会（平成28年度秋季大会）　2016/11/09

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発表日：１１月１０日
不規則形状粉末を用いたTi合金積層造形体の作製

加藤優典, 孫小淏, 菊池圭子, 野村直之, 川崎亮, 高久茜, 尾崎智道, 佐藤彰洋

粉体粉末冶金協会（平成28年度秋季大会）　2016/11/09

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発表日：１１月１１日
レーザ三次元粉末積層造形法を用いた生体用低磁性β型Zr-Nb-Sn合金の作製

百瀬樹, 孫小淏, 菊池圭子, 野村直之, 川崎亮, 土居壽, 堤祐介, 塙隆夫

粉体粉末冶金協会（平成28年度秋季大会）　2016/11/09

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発表日：１１月１１日
Fabrication and Mechanical Properties of Low Magnetic Zr-1Mo Alloy Fabricated by Powder Bed Fusion Process Using Fiber Laser for Biomedical Applications

Xiaohao SUN, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI, Hisashi DOI, Yusuke TSUTSUMI, Takao HANAWA

粉体粉末冶金協会（平成28年度秋季大会）　2016/11/09

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発表日：１１月１１日
Fabrication of Al2O3-reinforced Mo-Ti-Al Matrix Composites by Powder Bed Fusion Using Fiber Laser (PBFL)

Weiwei ZHOU, Kengo TSUNODA, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI, Yoshimi KYOSUKE

粉体粉末冶金協会（平成28年度秋季大会）　2016/11/09

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発表日：１１月１１日
Mechanical Properties of Selective Laser-melted Co-Cr-Mo-N Alloys for Biomedical Applications International-presentation Invited

Naoyuki NOMURA, Keiko KIKUCHI, Akira KAWASAKI

Visual－JW 2016　2016/10/17

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発表日：20161017, 発表時間：13：40-14：00
Effects of parameters on microstructure and mechanical properties of Cu-Cr alloy fabricated by selective laser melting process International-presentation

Keiko Kikuchi, Naoyuki Nomura, Takato Kousaka, Shinichi Moriya, Takayuki Nakamoto, Takahiro Kimura, Akira Kawasaki

10th International Conference on Trends in Welding Research & 9th International Welding Symposium of Japan Welding Society (9WS)　2016/10/11

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発表日時：20161013, 11:30-11:50
Microstructure And Mechanical Properties Of Selective Laser-melted Metals With Different Processed Powder International-presentation

Nomura N, Kikuchi K, Kawasaki A

WORLDPM2016 congress and exhibition　2016/10/09

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発表日時：20161012, 11:20-11:40
Microstructure and magnetic susceptibility of Zr-1Mo alloy fabricated by powder bed fusion process using fiber laser for biomedical applications

SUN XIAOHAO, 菊池圭子, 野村直之, 川崎亮, 土居壽, 堤祐介, 塙隆夫

日本金属学会2016年秋期講演大会（第159回）　2016/09/21

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発表日：９月２２日
レーザ三次元粉末積層造形法を用いた生体用低磁性β型Zr-9Nb-3Sn合金の作製

百瀬樹, 孫小淏, 菊池圭子, 野村直之, 川崎亮, 土居壽, 堤祐介, 塙隆夫

日本金属学会2016年秋期講演大会（第159回）　2016/09/21

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発表日：９月２２日
冷間スウェージングがZr-1Mo合金の機械的性質と磁化率に及ぼす影響

森田眞弘, 堤祐介, 野村直之, 蘆田茉希, 陳鵬, 土居壽, 塙隆夫

日本金属学会2016年秋期講演大会（第159回）　2016/09/21

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発表日：９月２２日
レーザ積層造形法により作製した銅合金の組織と機械的性質に及ぼす造形パラメータの影響

菊池圭子, 野村直之, 高坂天翔, 森谷信一, 中本貴之, 木村貴広, 川崎亮

日本金属学会2016年秋期講演大会（第159回）　2016/09/21

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発表日：９月２２日
Fe76Si9B10P5金属ガラス単分散粒子の粘性流動特性および磁気特性

吉年規治, 山田類, 大川舜平, 菊池圭子, 野村直之, 川崎亮

日本鉄鋼協会第172回秋季講演大会　2016/09/21

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発表日：９月２２日
グラフェン/Al複合材料の強度特性とその強化機構

周偉偉, 菊池圭子, 野村直之, 川崎亮

日本鉄鋼協会第172回秋季講演大会　2016/09/21

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発表日：９月２２日
Fabrication of heat-resistant Mo-Ti-Al alloys by powder bed fusion process using fiber laser

孫小淏, W. Zhou, 菊池圭子, 野村直之, 川崎亮, 吉見享祐

日本鉄鋼協会第172回秋季講演大会　2016/09/21

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発表日：９月２２日
Recent progress on Additive Manufacturing of Metals International-presentation Invited

Naoyuki Nomura

2016 ALMA Forum　2016/08/06

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発表日時：20160806, 15:50-16:20
Effects of Parameters on The Mechanical Properties of Cu-Cr Alloy Fabricated by Selective Laser Melting Process International-presentation Invited

N. Nomura, T. Kousaka, S. Moriya, T. Nakamoto, T. Kimura, K. Kikuchi, A. Kawasaki

9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM9)　2016/08/01

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発表日時：20160802, 15:50-16:10
Synthesis of N-Type Mg2Si/CNT Thermoelectric Nanofibers International-presentation

K. Kikuchi, N. Nomura, A. Kawasaki

9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM9)　2016/08/01

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発表日時：20160802, 14:30-14:45
Microstructure and Magnetic Susceptibility of Low Magnetic Zr Compacts Preventing Artifacts in MRI International-presentation

N. Nomura, E. Andreola, K. Kikuchi, A. Kawasaki

9th Pacific Rim International Conference on Advanced Materials and Processing (PRICM9)　2016/08/01

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発表日時：20160805, 11:20-11:35
Microstructure and mechanical properties of selective laser melted metals for biomedical applications International-presentation Invited

Naoyuki Nomura

International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS (Thermec'2016)　2016/05/29

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発表日時：20160530, 11:20-11:40
Development of Zr-Mo alloy with low magnetic susceptibility for spinal insturuments to decrease MRI artifact International-presentation Invited

Takao Hanawa, Naoyuki Nomura, Maki Ashida, Yusuke Tsutsumi, Hisashi Doi, Peng Chen

International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS (Thermec'2016)　2016/05/29

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発表日時：20160530, 14:40-15:00
Mg2Si/カーボンナノチューブ複合ナノファイバーの合成と熱電特性評価

菊池圭子, 山本晃大, 野村直之, 川崎亮

粉体粉末冶金協会平成28年度春季大会　2016/05/24

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発表日時：20160525, 11:20-11:35
Fabrication of TinO2n-1 by Hydrogen Reduction and Evaluation of Thermoelectric Properties

Xiaopeng FENG, Sho Murakami, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI

粉体粉末冶金協会平成28年度春季大会　2016/05/24

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発表日時：20160526, 11:55-12:10
Fabrication of Heat-resistant Mo-Ti-Al Alloys Using Selective Laser Melting Process

Xiaohao SUN, Kengo TSUNODA, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI, Yoshimi KYOSUKE

粉体粉末冶金協会平成28年度春季大会　2016/05/24

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発表日時：20160526, 14:20-14:35
レーザー積層造形法を用いた銅合金の組織と機械的性質に及ぼす造形パラメータの影響

菊池圭子, 野村直之, 高坂天翔, 森谷信一, 中本貴之, 木村貴広, 川崎亮

粉体粉末冶金協会平成28年度春季大会　2016/05/24

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発表日時：20160526, 14:50-15:05
Effect of powder fabrication process on microstructure and mechanical properties of selective laser melted metals for biomedical applications International-presentation

Naoyuki Nomura, Su Yalatu, Yusuke Tsutsumi, Takao Hanawa, Takayuki Nakamoto, Takahiro Kimura, Keiko Kikuchi, Akira Kawasaki

10th World Biomaterials Congress　2016/05/17

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発表日時：20160521, 18:00-18:15
Advanced researches of additive manufacturing for medicine in Japan International-presentation Invited

Takao Hanawa, Naoyuki Nomura, Takayoshi Nakano

10th World Biomaterials Congress　2016/05/17

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発表日時：20160522, 10:30-11:00
レーザ積層造形法により作製した銅合金の組織と機械的性質 Invited

野村直之, 菊池圭子, 川崎亮, 森谷信一, 中本貴之, 木村貴広

溶接学会平成28年度春季全国大会　2016/04/12

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発表日4月14日
生体用低磁性Zr焼結体に及ぼすMo添加の影響

野村直之, Emanuele Andreola, 菊池圭子, 川崎亮

日本金属学会2016年春期講演大会（第158回）　2016/03/23
冷間スウェージングが低磁性Zr-1Mo合金の機械的性質と磁化率に及ぼす影響

森田眞弘, 蘆田茉希, 堤祐介, 野村直之, 陳鵬, 土居壽, 塙隆夫

日本金属学会2016年春期講演大会（第158回）　2016/03/23
金属積層造形体の特性に影響を与える諸因子 Invited

野村直之

軽金属学会東北支部講演会およびイブニングセミナー　2016/03/11
金属積層造形体の特性に影響を与える諸因子 Invited

野村直之

大阪大学接合科学研究所東京セミナー「アディティブ・マニュファクチャリングと溶接・接合」　2015/12/10
生体用Zr-Mo焼結体の作製

野村直之, 菊池圭子, 川崎亮, Emanuele Andoreola

粉体粉末冶金協会平成27年度秋季大会　2015/11/11
球形金属粒子の充填シミュレーション

菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会平成27年度秋季大会　2015/11/11
レーザー積層造形法で製作したCo-Cr-Mo合金クラスプの疲労強度

高市敦士, 加嶋祐佳, 中本貴之, 蘆田茉希, 土居壽, 野村直之, 塙隆夫, 高橋英和, 若林則幸

第66回日本歯科理工学会学術講演会　2015/10/03
Cr濃度を変化させた歯科鋳造用窒素含有Co-Cr-Mo 合金の耐食性

土居壽, 蘆田茉希, 堤祐介, 野村直之, 塙隆夫

第66回日本歯科理工学会学術講演会　2015/10/03
Mechanical properties of selective laser melted Co-Cr-Mo alloys for biomedical applications International-presentation

Naoyuki Nomura, Su yalatu, Takayuki Nakamoto, Takahiro Kimura, Hisashi Doi, Yusuke Tsutsumi, Takao Hanawa

XIV Brazil MRS Meeting　2015/09/27
レーザ積層造形法を用いて作製した銅合金の組織と機械的性質

野村直之, 菊池圭子, 川崎亮, 森谷信一, 中本貴之, 木村貴広

日本鉄鋼協会第170回秋季講演大会　2015/09/16
高クロム含有コバルトクロム合金の表面組成と耐食性

堤祐介, 塙隆夫, 土居壽, 蘆田茉希, 陳鵬, 野村直之

日本金属学会2015年秋期講演大会（第157回）　2015/09/16
差圧鋳造法により作製した生体用高クロム高窒素含有コバルトクロム合金の組織と機械的性質

山本舜, 菊池圭子, 野村直之, 川崎亮

日本金属学会2015年秋期講演大会（第157回）　2015/09/16
窒素含有 Co-Cr-Mo 合金の Cr 濃度による機械的性質および耐食性への影響

土居壽, 蘆田茉希, 陳鵬, 堤祐介, 塙隆夫, 野村直之

日本金属学会2015年秋期講演大会（第157回）　2015/09/16
積層造形法による医療用金属材料開発の現状と課題 Invited

野村直之

第50回粉体粉末冶金技術研究会　2015/09/04
金属ガラス表面へのレーザー照射による結晶相/酸化物相の選択的形成

山田類, 才田淳治, 野村直之, 川崎亮

粉体粉末冶金協会（平成２７年度春季大会）　2015/05/26
レーザー積層造形法を用いた銅合金の組織

野村直之, 冨永皓祐, 森谷信一, 中本貴之, 木村貴広, 菊池圭子, 川崎亮

粉体粉末冶金協会（平成２７年度春季大会）　2015/05/26
レーザ三次元積層造形法を用いた生体用低磁性Zr‐Mo合金の作製

百瀬樹, 加藤優典, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成２７年度春季大会）　2015/05/26
ファイバーレーザを用いたTi合金粉末直接加熱におよぼす粉末粒径の影響

加藤優典, 百瀬樹, 菊池圭子, 野村直之, 川崎亮, 尾崎智道, 佐藤彰洋

粉体粉末冶金協会（平成２７年度春季大会）　2015/05/26
MRIアーチファクトを防止する生体用低磁性ジルコニウム合金焼結体の開発

野村直之, 菊池圭子, 川崎亮

粉体粉末冶金協会（平成２７年度春季大会）　2015/05/26
Preparation and Thermoelectric Properties of SrTiO3/Graphene Composites

Xiaopeng FENG, Yuchi FAN, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI

粉体粉末冶金協会（平成２７年度春季大会）　2015/05/26
Direct Evaluation of Interfacial Strength in MWCNT‐Al Matrix Composites by an In‐situ Pullout Method

Weiwei ZHOU, Go YAMAMOTO, Toshiyuki HASHIDA, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI

粉体粉末冶金協会（平成２７年度春季大会）　2015/05/26
多層カーボンナノチューブ分散型アルミニウム基複合材料の熱膨張挙動に関する研究

周偉偉, 山口達也, 菊池圭子, 野村直之, 川崎亮

軽金属学会第128回春期大会　2015/05/15
レーザ積層造形法による金属材料の造形と機械的性質 Invited

野村直之

日本鋳造工学会東北支部第45回宮城大会　2015/04/15
窒素含有Co-Cr-Mo合金のCr組成による機械的性質への影響

土居壽, 蘆田茉希, 堤祐介, 野村直之, 塙隆夫

第65 回日本歯科理工学会学術講演会　2015/04/11
高クロム含有コバルト合金の表面組成と耐食性

堤祐介, 塙隆夫, 土居壽, 蘆田茉希, 野村直之

第65 回日本歯科理工学会学術講演会　2015/04/11
窒素含有Co-Cr-Mo 合金の金属組織におよぼすCr 濃度の影響

野村直之, 土居壽, 堤祐介, 塙隆夫

第65 回日本歯科理工学会学術講演会　2015/04/11
レーザ積層造形法による金属材料の造形と機械的性質 Invited

野村直之

異材接合３Ｄプリンタ特別研究会講演会（第１回）　2015/03/23

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溶接学会
レーザー積層造形法を用いた生体用高クロム高窒素含有コバルト合金多孔体の作製と評価

園部道俊, 山本舜, 中本貴之, 木村貴広, 蘇亜拉図, 菊池圭子, 野村直之, 川崎亮

日本金属学会2015年春期講演大会　2015/03/18
生体用Zr-Nb 合金へのAl 添加による非熱的ω 抑制と低弾性化

當代光陽, 福永圭佑, 中野貴由, 野村直之, 塙隆夫

日本金属学会2015年春期講演大会　2015/03/18
レーザー積層造形したCo-33Cr-5Mo-0.4N 合金の疲労特性に及ぼす熱処理の影響

蘇亜拉図, 新家光雄, 野村直之, 成田健吾, 中本貴之, 木村貴広, 謝国強, 千葉晶彦

日本金属学会2015年春期講演大会　2015/03/18
レーザー積層造形による医療用金属部材の加工と特性 Invited

野村直之

第60回塑性加工技術フォーラム「粉末積層造形（3Dプリンタ）による金属部材製造」　2015/03/06

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日本塑性加工学会
レーザ積層造形法による医療用金属材料の特異組織形成とその機械的特性 Invited

野村直之

第98回界面接合研究委員会　2015/01/23

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一般社団法人溶接学会界面接合研究委員会
フレキシブル熱電素子の高効率化に向けたMg2Si被覆カーボンナノチューブの合成

菊池圭子, 山本晃大, 野村直之, 川崎亮

粉体粉末冶金協会（平成２６年度秋季大会）　2014/10/29
カーボンナノチュブ分散強化型アルミニウム複合材料の熱膨張挙動

山口達也, 周偉偉, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成２６年度秋季大会）　2014/10/29
Carbide Formation in the CNTs Reinforced Al Matrix Composites

Weiwei ZHOU, Tatsuya YAMAGUCHI, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI

粉体粉末冶金協会（平成２６年度秋季大会）　2014/10/29
銀ナノ粒子/カーボンナノチューブ複合焼結体の熱伝導率に及ぼすマトリックス組織の影響

山本晃大, 引地秀太, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成２６年度秋季大会）　2014/10/29
Graphene/Al2O3ナノ複合材料の強度およびヤング率に関する研究

五十嵐銀河, 範宇馳, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成２６年度秋季大会）　2014/10/29
Study on the Preparation and Thermoelectric Properties of STO/graphene Composites

Xiaopeng FENG, Yuchi FAN, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI

粉体粉末冶金協会（平成２６年度秋季大会）　2014/10/29
三次元積層造形法を用いて作製した生体用高クロム高窒素含有コバルト合金多孔体の機械的性質に対する熱処理の影響

園部道俊, 山本舜, 菊池圭子, 野村直之, 川崎亮, 蘇亜拉図, 中本貴之, 木村貴広

粉体粉末冶金協会（平成２６年度秋季大会）　2014/10/29
レーザー積層造形法により作製した高クロム高窒素含有Co‐Cr‐Mo合金の疲労特性に及ぼす熱処理の影響

蘇亜拉図, 野村直之, 中本貴之, 木村貴広, 成田健吾, 謝国強, 千葉晶彦, 新家光雄

粉体粉末冶金協会（平成２６年度秋季大会）　2014/10/29
レーザー積層造形法を用いた銅合金の作製

野村直之, 森谷信一, 中本貴之, 木村貴広, 菊池圭子, 川崎亮

粉体粉末冶金協会（平成２６年度秋季大会）　2014/10/29
金属積層造形プロセスにおける特異組織の形成と機械的特性 Invited

野村直之

大阪大学接合科学研究所溶射・造形研究集会（第３回）　2014/10/09
高窒素含有Co-Cr-Mo-W合金の組織と機械的性質

野村直之, 土居壽, 蘇亜拉図, 堤祐介, 塙隆夫

第64回日本歯科理工学会学術講演会　2014/10/04
高窒素含有Co-Cr-Mo-W合金の耐食性

土居壽, 堤祐介, 蘆田茉希, 陳鵬, 野村直之, 塙隆夫

第64回日本歯科理工学会学術講演会　2014/10/04
MRI アーチファクトを防止する低磁性Zr 焼結体の組織と磁化率

野村直之, 山崎敬太, 菊池圭子, 川崎亮

日本金属学会2014年秋期講演大会　2014/09/24
低磁性Zr-1Mo 合金HIP 処理後の組織と機械的特性

蘆田茉希, 陳鵬, 土居壽, 堤祐介, 塙隆夫, 野村直之, 杉本智広

日本金属学会2014年秋期講演大会　2014/09/24
レーザー積層造形法により作製したTi/Zr およびTNTZ/Zr

蘇亜拉図, 新家光雄, 成田健吾, 謝国強, 仲井正昭, 中本貴之, 木村貴広, 野村直之, 塙隆夫

日本金属学会2014年秋期講演大会　2014/09/24
レーザー積層造形による医療用金属の成形 Invited

野村直之

日本金属学会分科会シンポジウム「3Dプリンターによる次世代ものづくり」　2014/09/12
三次元積層造形法による医療用金属材料の開発 Invited

野村直之

日本溶接協会平成２６年度第１回溶接・接合プロセス研究委員会　2014/08/19
三次元積層造形法による医療用金属材料の開発 Invited

野村直之

第２回「次世代バイオマテリアル」を考える会　2014/06/25

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明治大学理工学部生田キャンパス
ファイバーレーザーを用いた生体用高クロム高窒素含有コバルト合金積層造形体の組織と機械的性質

野村直之, 園部道俊, 山本舜, 中本貴之, 木村貴広

粉体粉末冶金協会（平成２６年度春季大会）　2014/06/03
三次元積層造形法を用いた生体用高クロム高窒素含有コバルト合金多孔体の作製

園部道俊, 山本舜, 中本貴之, 木村貴広, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成２６年度春季大会）　2014/06/03
球形マイクロ粒子の三次元自己組織化シミュレーション

菊池圭子, 高木健太, 野村直之, 川崎亮

粉体粉末冶金協会（平成２６年度春季大会）　2014/06/03
窒素，炭素を添加した歯科鋳造用高クロムCo-Cr-Mo 合金の組織と機械的性質

野村直之, 土居壽, 蘇亜拉図, 堤祐介, 塙隆夫

第63回日本歯科理工学会学術講演会　2014/04/12
窒素，炭素を添加した歯科鋳造用高クロムCo-Cr-Mo 合金の1％乳酸中での耐食性

土居壽, 堤祐介, 蘇亜拉図, 野村直之, 塙隆夫

第63回日本歯科理工学会学術講演会　2014/04/12
高クロム高窒素含有コバルトクロム合金積層造形体の機械的性質におよぼす粉末製法の影響

野村直之, 大山恭平, 園部道俊, 菊池圭子, 川崎亮, 蘇亜拉図, 中本貴之, 木村貴広

日本金属学会2014年春期講演大会　2014/03/21
レーザー積層造形法により作製したCo-33Cr-5Mo-0.4N合金の疲労特性におよぼす造形方向の影響

蘇亜拉図, 新家光雄, 成田健吾, 仲井正昭, 謝国強, 千葉晶彦, 野村直之, 中本貴之

日本金属学会2014年春期講演大会　2014/03/21
生体用β型Zr-Nb合金における電気抵抗の負の温度依存性と非熱的ω生成

當代光陽, 福永圭佑, 中野貴由, 野村直之, 塙隆夫

日本金属学会2014年春期講演大会　2014/03/21
三次元積層造形法を用いた生体用Co-Cr-Mo合金多孔体の作製

園部道俊, 大山恭平, 菊池圭子, 野村直之, 川崎亮

第１２回日本金属学会東北支部研究発表大会　2014/01/13
MRIアーチファクトを防止する低磁性Zr焼結体の作製

山崎敬太, 菊池圭子, 野村直之, 川崎亮

第１２回日本金属学会東北支部研究発表大会　2014/01/13
Effects of cold working on the magnetic susceptibiity and mechanical properties of Zr-Nb alloys preventing artifacts in MRI International-presentation Invited

Naoyuki NOMURA

International Conference on PROCESSING & MANUFACTURING OF ADVANCED MATERIALS (THERMEC'2013)　2013/12/02
レーザー積層造形法により作製した高クロム高窒素含有コバルトクロム合金の機械的性質におよぼす粉末製法の影響

野村直之, 大山恭平, 園部道俊, 蘇亜拉図, 中本貴之, 木村貴広, 菊池圭子, 川崎亮

粉体粉末冶金協会（平成２５年度秋季大会）　2013/11/27
三次元積層造形法を用いて作製した生体用Co‐Cr‐Mo合金多孔体の組織観察

園部道俊, 大山恭平, 蘇亜拉図, 中本貴之, 木村貴広, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成２５年度秋季大会）　2013/11/27
レーザー積層造形法により作製した高クロム高窒素含有Co‐Cr‐Mo合金の疲労特性

蘇亜拉図, 中本貴之, 野村直之, 成田健吾, 仲井正昭, 謝国強, 千葉晶彦, 新家光雄

粉体粉末冶金協会（平成２５年度秋季大会）　2013/11/27
生体用Co‐Cr‐Mo合金多孔体/ハイドロキシアパタイト複合材料の作製

大山恭平, 園部道俊, 蘇亜拉図, 中本貴之, 木村貴広, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成２５年度秋季大会）　2013/11/27
The Effect of Formation of Al4C3 on the Mechanical Property of CNT‐Al Composites

Weiwei ZHOU, Shun SASAKI, Tatsuya, YAMAGUCHI, Keiko KIKUCHI, Naoyuki NOMURA, Akira KAWASAKI

粉体粉末冶金協会（平成２５年度秋季大会）　2013/11/27
CNT‐Al複合材料の強化における荷重伝達機構に関する研究

佐々木駿, 周偉偉, 山口達也, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成２５年度秋季大会）　2013/11/27
銀ナノ粒子/カーボンナノチューブ複合材料における分散剤除去条件の検討

引地秀太, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成２５年度秋季大会）　2013/11/27
低磁性Zr-Ta合金の硬さに及ぼすTa濃度の影響

高久茜, 田中勇太, 高橋聰, 野村直之, 塙隆夫

日本金属学会2013年秋期講演大会　2013/09/17
低磁性Zr-Ta合金の相境界領域と弾性率の関係

田中勇太, 高久茜, 高橋聰, 野村直之, 塙隆夫

日本金属学会2013年秋期講演大会　2013/09/17
Zrの機械的性質に及ぼすCrおよびN添加の影響

蘇亜拉図, 新家光雄, 成田健吾, 謝国強, 野村直之, 塙隆夫

日本金属学会2013年秋期講演大会　2013/09/17
生体用β型Zr基合金における相変態と塑性変形挙動

福永圭佑, 當代光陽, 中野貴由, 野村直之, 塙隆夫

日本金属学会2013年秋期講演大会　2013/09/17
三次元積層造形法を用いた生体用Co‐Cr‐Mo合金多孔体の作製

大山恭平, 園部道俊, 蘇亜拉図, 中本貴之, 菊池圭子, 野村直之, 川崎亮

粉体粉末冶金協会（平成２５年度春季大会）　2013/05/27
銀ナノ粒子/カーボンナノチューブ複合材料における分散剤除去処理の影響

菊池圭子, 小森健祐, 引地秀太, 野村直之, 川崎亮

粉体粉末冶金協会（平成２５年度春季大会）　2013/05/27
Zr-Mo合金の磁化率と機械的特性に及ぼす熱処理およびAl添加の影響

蘇亜拉図, 野村直之, 堤祐介, 土居壽, 塙隆夫

日本金属学会2013年春期講演大会　2013/03/27
Sn添加したZr-Nb合金の磁化率に及ぼすスウェージ加工と熱処理の影響

野村直之, 清水良太, 野田和彦, 蘇亜拉図, 近藤亮太, 堤祐介, 土居壽, 塙隆夫

日本金属学会2013年春期講演大会　2013/03/27
疑似体液中で高耐食性を示すZr基バルク金属ガラスの開発

堤祐介, 右田聖, 蘇亜拉図, 野村直之, 横山嘉彦, 井上明久

日本金属学会2013年春期講演大会　2013/03/27
レーザー積層造形法の歯科応用 Co-Cr-Mo合金の機械的特性と耐食性

高市敦士, 野村直之, 若林則幸, 塙隆夫, 五十嵐順正

口腔病学会雑誌　2013/03
Enhancement of Calcium Phosphate Formation on Zirconium by Combination of Simple Electrochemical Treatments

Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Kyo-Han Kim, Takao Hanawa

BIOCERAMICS 24　2013

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Electrochemical surface treatments of micro-arc oxidation (MAO) and following cathodic polarization were performed on zirconium (Zr) disks in this study to enhance the bioactivity of Zr. The surface oxide layers formed with electrochemical treatments on Zr disks were characterized using surface analyses; the calcium phosphate formation on the specimens after immersion in Hanks' solution was evaluated. As a result, thick calcium phosphate layers formed on only Zr specimens that underwent both MAO treatment with a mixture of calcium glycerophosphate and magnesium acetate and subsequent cathodic polarization treatment with sodium sulfate solution, while no precipitate was observed without treatment. Thus, this technique was confirmed to be a promising method to improve the bioactivity of Zr.
レーザー積層造形法の歯科応用 Co-Cr-Mo合金を用いた造形物の機械的特性

高市敦士, 野村直之, 蘇亜拉図, 若林則幸, 塙隆夫, 五十嵐順正

日本補綴歯科学会誌　2013/01
MRIアーチファクトを防止する生体用Zr基合金および複合材料の開発 Invited

日本バイオマテリアル学会シンポジウム2012　2012/11/26
生体用チタン合金の長期腐食挙動の解析

堤祐介, 右田聖, 蘇亜拉図, 土居壽, 野村直之, 塙隆夫

日本バイオマテリアル学会シンポジウム2012　2012/11/26
レーザー積層造形法により作製したCo-Cr-Mo 合金の組織と機械的特性におよぼす造形雰囲気の影響

蘇亜拉図, 野村直之, 中本貴之, 土居壽, 堤祐介, 右田聖, 塙隆夫

日本バイオマテリアル学会シンポジウム2012　2012/11/26
ポリエチレングリコール電着固定化による界面の潤滑特性

糸井祐貴, 堤祐介, 蘇亜拉図, 右田聖, 土居壽, 野村直之, 野田和彦, 塙隆夫

日本バイオマテリアル学会シンポジウム2012　2012/11/26
Sn添加Zr-Nb 合金の磁化率に及ぼす加工の影響

清水良太, 近藤亮太, 堺貴啓, 土居壽, 堤祐介, 蘇亜拉図, 右田聖, 野村直之, 野田和彦, 塙隆夫

日本バイオマテリアル学会シンポジウム2012　2012/11/26
生体機能化を目指したチタン表面へのリン脂質ポリマーの電着による固定

久藏愛, 井上祐貴, 右田聖, 蘇亜拉図, 堤祐介, 土居壽, 野村直之, 石原一彦, 塙隆夫

日本バイオマテリアル学会シンポジウム2012　2012/11/26
MRI アーチファクト防止型低磁性Zr/Ag 複合材料の作製と機械的性質

堺貴啓, 近藤亮太, 蘇亜拉図, 右田聖, 堤祐介, 土居壽, 野村直之, 塙隆夫

日本バイオマテリアル学会シンポジウム2012　2012/11/26
レーザー積層造形法により作製したコバルトクロム合金の組織と機械的特性におよぼす造形雰囲気の影響

野村直之, 蘇亜拉図, 中本貴之, 堤祐介, 土居壽, 塙隆夫

粉体粉末冶金協会（平成２４年秋季大会）　2012/11/20
Decrease of Friction Coefficients of Titanium Surface by Poly (Ethylene Glycol) Immobilization International-presentation

Y. Itoi, S. Migita, Y. Tsutsumi, Suyalatu, H. Doi, N. Nomura, K. Noda, T. Hanawa

ISAEM-2012 / AMDI-3　2012/11/05
Effect of Cold-Rolling on the Magnetic Susceptibility of Zr-9Nb-3Sn Alloy International-presentation

R. Shimizu, R. Kondo, T. Sakai, S. Migita, Suyalatu, N. Nomura, K. Noda, T.Hanawa

ISAEM-2012 / AMDI-3　2012/11/05
Improvement of Biocompatibility of Metal Surface by Electrodeposition of Phospholipid Polymer International-presentation

M. Kyuzo, Y. Inoue, S. Migita, Suyalatu, Y. Tsutsumi, H. Doi, N. Nomura, K. Ishihara, T. Hanawa

ISAEM-2012 / AMDI-3　2012/11/05
Magnetic Susceptibility of Zr/Ag Composites Preventing Artifacts in MRI International-presentation

T. Sakai, R. Kondo, Suyalatu, S. Migita, Y. Tsutsumi, H. Doi, N. Nomura, T. Hanawa

ISAEM-2012 / AMDI-3　2012/11/05
"Development of Zirconium-Based Bulk Metallic Glass with High-Corrosion Resistance in Simulated Body International-presentation

Y. Tsutsumi, Y. Yokoyama, S. Migita, Suyalatu, H. Doi, N. Nomura, A. Inoue, T. Hanawa

ISAEM-2012 / AMDI-3　2012/11/05
Effect of Building Atmosphere on the Microstructure and Mechanical Properties of Co-Cr-Mo Alloy International-presentation

N. Nomura, Suyalatu, T. Nakamoto, H. Doi, Y. Tsutsumi, S. Migita, T. Hanawa

ISAEM-2012 / AMDI-3　2012/11/05
Microstructure and Mechanical Properties of Nitrogen-Containing Co-Cr-Mo Alloy Fabricated by Selective International-presentation

Suyalatu, N. Nomura, A. Takaichi, T. Nakamoto, H. Doi, Y. Tsutsumi, S. Migita, N. Wakabayashi

ISAEM-2012 / AMDI-3　2012/11/05
Effect of Heat Treatment on the Mechanical Properties of Zr-14Nb Preventing Artifact in MRI International-presentation

R. Kondo, N. Nomura, H. Matsumoto, H. Doi, Y. Tsutsumi, A. Chiba, T. Hanawa

ISAEM-2012 / AMDI-3　2012/11/05
Manufacturing of Zr-Based Metallic Glasses Controlled Magnetic Susceptibility International-presentation

I. Seki, R.Y. Umetsu, G.Q. Xie, N. Nomura, X.M. Wang, T. Hanawa

ISAEM-2012 / AMDI-3　2012/11/05
Effects of Sn addition on the Magnetic Susceptibility and Mechanical Properties of Zr-Nb Alloys Preventing Artifacts in MRI International-presentation Invited

Naoyuki Nomura

ISAEM-2012 / AMDI-3　2012/11/05
Enhancement of Calcium Phosphate Formation on Zirconium by Combination of Simple Electrochemical Treatments International-presentation

Y. Tsutsumi, H. Doi, N. Nomura, K-H. Kim, T. Hanawa

Bioceramics24　2012/10/21
MRIアーチファクト防止型医療用Zr/Ag複合線材の機械的性質

堺貴啓, 近藤亮太, 蘇亜拉図, 右田聖, 堤祐介, 土居壽, 野村直之, 塙隆夫

第60回日本歯科理工学会学術講演会　2012/10/13
"レーザー積層造形法の歯科応用 -Co-Cr-Mo合金を用いた造形物の機械的特性と耐食性-

高市敦士, 野村直之, 蘇亜拉図, 中本貴之, 塙隆夫, 五十嵐順正

第60回日本歯科理工学会学術講演会　2012/10/13
Zr-Nb合金の高温酸化によるジルコニア被覆―高温酸化条件が色調と酸化層厚さに及ぼす影響―

Yu Miao, 近藤亮太, 蘇亜拉図, 堤祐介, 土居壽, 野村直之, 塙隆夫, 春日井昇平

第60回日本歯科理工学会学術講演会　2012/10/13
歯科鋳造用Co-Cr-Mo-N合金のMoによる機械的性質への影響

土居壽, 蘇亜拉図, 右田聖, 堤祐介, 野村直之, 塙隆夫

第60回日本歯科理工学会学術講演会　2012/10/13
レーザー積層造形法により作製したコバルトクロム合金の組織と機械的特性におよぼす造形雰囲気の影響

蘇亜拉図, 野村直之, 中本貴之, 土居壽, 堤祐介, 右田聖, 塙隆夫

第60回日本歯科理工学会学術講演会　2012/10/13
マイクロアーク陽極酸化処理によるジルコニウムの生体適合性の向上

堤祐介, HA Jung-Yun, 右田聖, 蘇亜拉図, 土居壽, 野村直之, Kim Kyo-Han, 塙隆夫

表面技術協会第126回講演大会　2012/09/27
金属アレルギーテスト試薬開発に向けた擬似体液中でのNi, Zn, Cuの腐食加速法の開発

鈴木貴文, 堤祐介, 右田聖, 蘇亜拉図, 野村直之, 野田和彦, 塙隆夫

第59回材料と環境討論会　2012/09/26
コバルトクロム合金の摩擦特性に及ぼすPEG 電着の効果

糸井祐貴, 蘇亜拉図, 右田聖, 堤祐介, 土居壽, 野村直之, 野田和彦, 塙隆夫

日本金属学会2012年秋期講演大会　2012/09/24
Ti-Cu 基合金による磁化率ゼロのMRI 適合材料の開発

関一郎, 梅津理恵, 王新敏, 謝国強, 山浦真一, 新家光雄, 野村直之, 塙隆夫

日本金属学会2012年秋期講演大会　2012/09/17
低磁性Zr/Ag 複合線材の機械的性質

堺貴啓, 近藤亮太, 蘇亜拉図, 右田聖, 堤祐介, 土居壽, 野村直之, 塙隆夫

日本金属学会2012年秋期講演大会　2012/09/17
歯科用高クロム高窒素含有コバルトクロム合金の組織と機械的特性

野村直之, 蘇亜拉図, 土居壽, 右田聖, 堤祐介, 塙隆夫, 黒須信吾, 千葉晶彦, 依田慶太, 五十嵐順正

日本金属学会2012年秋期講演大会　2012/09/17
レーザー積層造形法により作製したコバルトクロム合金の機械的特性に及ぼす窒素添加の影響

蘇亜拉図, 野村直之, 高市敦士, 中本貴之, 土居壽, 堤祐介, 黒須信吾, 千葉晶彦, 若林則幸, 五十嵐順正, 塙隆夫

日本金属学会2012年秋期講演大会　2012/09/17
軟組織の接着に及ぼすTi の表面粗さの影響

右田聖, 堤祐介, 土居壽, 野村直之, 塙隆夫

日本金属学会2012年秋期講演大会　2012/09/17
Sn 添加Zr-Nb 合金の磁化率に及ぼす加工の影響

清水良太, 野田和彦, 近藤亮太, 堺貴啓, 右田聖, 蘇亜拉図, 堤祐介, 土居壽, 野村直之, 塙隆夫

日本金属学会2012年秋期講演大会　2012/09/17
生体用Zr-Nb 合金におけるω 相変態とその力学特性への影響

福永圭佑, 當代光陽, 中野貴由, 野村直之, 塙隆夫

日本金属学会2012年秋期講演大会　2012/09/17
MAO 処理により形成したZr の多孔質酸化皮膜の硬組織適

堤祐介, 右田聖, 蘇亜拉図, 土居壽, 野村直之, 塙隆夫

日本金属学会2012年秋期講演大会　2012/09/17
チタン表面へのリン脂質ポリマーの電着固定による生体親和化

久藏愛, 井上祐貴, 石原一彦, 右田聖, 蘇亜拉図, 堤祐介, 土居壽, 野村直之, 塙隆夫

日本金属学会2012年秋期講演大会　2012/09/17
レーザー積層造形法により作製したコバルトクロム合金の特性と課題 Invited

金属光造形複合加工医療機器フォーラム　2012/06/23

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第２回シンポジウム
Blood and Endtherial Cell Compatibility of Titanium Electrodeposited Collagen and Implanted Helium Ion International-presentation

Hitomi Hiruma, Takao Hanawa, Yoshiaki Suzuki, YusukeTsutsumi, Hisashi Doi, Naoyuki Nomura

9th World Biomaterials Congress　2012/06/01
Improvement of the Bioactivity of Zr with The Combination of Micro-arc Oxidation and Chemical Treatments International-presentation

Yusuke Tsutsumi, Jung-Yun Ha, Hisashi Doi, Naoyuki Nomura, Takao Hanawa, Kyo-Han Kim

9th World Biomaterials Congress　2012/06/01
Effect of Sn Addition on the Magnetic Susceptibility of Zr-Nb Alloy Preventing Artifacts in MRI International-presentation

Naoyuki Nomura, Shun Nakagawa, Suyatatu, Ryota Kondo, Hisashi Doi, Yusuke Tsutsumi, Kazuhiko Noda, Takao Hanawa

9th World Biomaterials Congress　2012/06/01
Initial Adhesion Behaviour of Mc3t3-e1 Cells on PEG-electrodeposited Titanium with Cell-adhesive Peptide International-presentation

Satoshi Migita, Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Takao Hanawa, Shogo Okada

9th World Biomaterials Congress　2012/06/01
Effect of Cold-rolling on Magnetic Susceptibility of Zr-14Nb Alloy Preventing Artifact in MRI International-presentation

Ryota Kondo, Ryota Shimizu, Takahiro Sakai, Suyalatu, Hisashi Doi,YusukeTsutsumi, Kazuhiko Noda, Naoyuki Nomura, Takao Hanawa

9th World Biomaterials Congress　2012/06/01
Microstructure and Mechanical Properties of Co-33Cr-5Mo-0.3N Alloys Fabricated by Selective Laser Melting Process for Dental Applications International-presentation

Suyalatu, Naoyuki Nomura, Atsushi Takaichi, Takayuki Nakamoto, Hisashi Doi, Yusuke Tsutsumi, Shingo Kurosu, Akihiko Chiba, Noriuki Wakabayashi, Yoshimasa Igarashi, Takao Hanawa

9th World Biomaterials Congress　2012/06/01
Anisotoropy of Microstructures and Mechanical Properties of Co-29Cr-Mo Alloy Fabricated By Selective Laser Melting Process

Atsushi Takaichi, Suyalatu, Nayuki Nomura, Takayuki Nakamoto, Hisashi Doi, Yusuke Tsutsumi, Shingo Kurosu, Akihiko Chiba, Noriyuki Wakabayashi, Yoshimasa Igarashi, Takao Hanawa

9th World Biomaterials Congress　2012/06/01
The influence of Compositional Change on Mechanical Properties and Magnetic Susceptibility of Ti-Zr Binary Alloys As Implant Materials International-presentation

T.James Lee, Nayuki Nomura, Ryota Kondo, Suyalatu, Takeshi Ueno, Noriyuki Wakabayashi, Yoshimasa Igarashi, Takao Hanawa

9th World Biomaterials Congress　2012/06/01
3次元積層造形法による医療用金属材料の開発 Invited

粉体粉末冶金協会　2012/05/22
歯科用Co-Cr-Mo合金の組織と機械的特性におよぼすNおよびMoの影響

蘇亜拉図, 野村直之, 山田裕太, 土居壽, 堤祐介, 黒須信吾, 下条雅幸, 千葉晶彦, 塙隆夫

平成24年度春期第59回日本歯科理工学会学術講演会　2012/04/14
MRIアーチファクト防止型歯科用Zr/Ag複合材料の作製

堺貴啓, 近藤亮太, 蘇亜拉図, 堤祐介, 土居壽, 野村直之, 塙隆夫

平成24年度春期第59回日本歯科理工学会学術講演会　2012/04/14
PEGを電着したTi表面における骨芽細胞様細胞の接着挙動

右田聖, 堤祐介, 土居壽, 野村直之, 塙隆夫

平成24年度春期第59回日本歯科理工学会学術講演会　2012/04/14
MAO処理によるZrのリン酸カルシウム形成促進に及ぼすMgの影響

堤祐介, 蘇亜拉図, 右田聖, 土居壽, 野村直之, 塙隆夫

平成24年度春期第59回日本歯科理工学会学術講演会　2012/04/14
MRIアーチファクト防止型歯科用Zr-Sn合金の組織と磁化率

近藤亮太, 野村直之, 蘇亜拉図, 堤祐介, 土居壽, 塙隆夫

平成24年度春期第59回日本歯科理工学会学術講演会　2012/04/14
レーザー積層造形法により成形した高クロム高窒素含有Co-Cr-Mo合金の機械的特性

蘇亜拉図, 野村直之, 高市敦士, 中本貴之, 土居壽, 堤祐介, 黒須信吾, 千葉晶彦, 若林則幸, 五十嵐順正, 塙隆夫

日本バイオマテリアル学会大会予稿集　2011/11
レーザー積層造形法により成形したCo-29Cr-6Mo合金の機械的特性におよぼす引張方向の影響

野村直之, 高市敦士, 蘇亜拉図, 中本貴之, 堤祐介, 土居壽, 黒須信吾, 千葉晶彦, 若林則幸, 五十嵐順正, 塙隆夫

日本バイオマテリアル学会大会予稿集　2011/11
レーザー積層造形法により作製した高クロム高窒素含有Co-Cr-Mo合金の組織と機能的特性

蘇亜拉図, 野村直之, 高市敦士, 中本貴之, 土居壽, 堤祐介, 黒須信吾, 千葉晶彦, 若林則幸, 五十嵐順正, 塙隆夫

日本歯科理工学会誌　2011/09
チタン表面へのコラーゲン電着条件の最適化

塙隆夫, 鎌田秀樹, 堤祐介, 土居壽, 野村直之, 森山啓司

チタンと歯科臨床　2011/02
Ti表面コラーゲン電着固定化層の耐久性に及ぼすpH、電位、時間の影響

鎌田秀樹, 鈴木聖一, 堤祐介, 土居壽, 野村直之, 森山啓司, 塙隆夫

日本バイオマテリアル学会大会予稿集　2010/11
Effect of PEG immobilization on blood compatibility of titanium-based bulk metallic glass modified with femtosecond laser irradiation

Yusuke Tsutsumi, Hisashi Doi, Naoyuki Nomura, Takao Hahawa, Nobuyuki Abe, Masahiro Tsukamoto, Kunsu Son, Xinmin Wang, Guoqiang Xie, Akihisa Inoue

Proceedings of the Visual-JW2010　2010/11

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Industrial Property Rights 12

生体用ジルコニウム合金、及び骨固定具

野村直之, 塙隆夫, 土居壽

Property Type: Patent
生体用金属材料および医療機器

塙隆夫, 野村直之

Property Type: Patent
骨固定具用材及び骨固定具

塙隆夫, 野村直之, 土居壽, 赤澤敏之, 中村勝男

Property Type: Patent
生体用Co-Cr-Mo鋳造合金

千葉晶彦, 野村直之

特許第5164144号

Property Type: Patent
塑性加工性に優れる生体用Co基合金の製造方法

千葉晶彦, 野村直之

特許第5156943号

Property Type: Patent
生体用インプラント材料

野村直之, 千葉晶彦

特許第4892726号

Property Type: Patent
生体用インプラント複合材料

千葉晶彦, 野村直之, 首藤文榮

特許第5156941号

Property Type: Patent
多孔質Co基合金焼結被覆材およびその製造方法

野村直之, 千葉晶彦, 阿部麻里子

特許第5303718号

Property Type: Patent
耐磨耗特性に優れる人工関節用Co-Cr-Mo合金

千葉晶彦, 熊谷和重, 野村直之

特許第4843795号

Property Type: Patent
MRI対応生体用Co-Cr-Mo合金およびその製造方法

千葉晶彦, 野村直之

特許第4631050号

Property Type: Patent
組織制御によってイオン溶出を抑えた生体用Co-Cr-Mo合金およびその製造方法

千葉晶彦, 黒須信吾, 野村直之

特許第5239005号

Property Type: Patent
Mo-Si-B合金

野村直之, 吉見享祐, 花田修治

Property Type: Patent

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Research Projects 15

"Development of a Supersaturated Solid Solution Al-Based Alloy with Lightweight Elements that Balances Electrical Conductivity and Strength via Introduction of Stacking Faults

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (C)

Institution: Tohoku University

2025/04/01 - 2028/03/31
酸素を積極的に利用してメリットが重畳発現する積層造形用ステンレス鋼粉末の開発

野村直之

Offer Organization: 日本学術振興会

System: 科学研究費助成事業基盤研究(B)

Category: 基盤研究(B)

Institution: 東北大学

2020/04/01 - 2023/03/31
High performnce functionalization of Zr alloys to decrease MRI artifact

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: Tokyo Medical and Dental University

2019/04/01 - 2023/03/31
Pioneering of hierarchical porous materials by 3D printer

Fujita Takeshi

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Pioneering)

Category: Grant-in-Aid for Challenging Research (Pioneering)

2017/06/30 - 2020/03/31

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By combining electron beam melting process, which is one of the 3D printing techniques, and dealloying, hierarchical nanoporous copper with difference length level of micro-micro-nano pores has been realized. Compared with conventional nanoporous copper with only nanopores, the apparent catalytic activity of methanol oxidation was 9.2 times higher than that of conventional nanoporous copper due to enhanced diffusivity of electrolyte near electrode.
Effect of alloying elements on property of multi-system zirconium alloys with low magnetic susceptibility

Hanawa Takao, Nomura Naoyuki

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: Tokyo Medical and Dental University

2015/04/01 - 2019/03/31

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Zr-Nb-Ta-Mo alloys were dsigned based on d electron alloy design theory and the fainal pcmposition was determined as Zr-14Nb-5Ta-1Mo. The alloy was large-acale melted using scull furnace, hot-forged, cold-swaged, and heattreated and the mechancal properties and crystal structure were evaluated. The resultant alloy showed good balance of larage strength, large elongation, small Young's modulus, and low magnetic susceptibility. These properties could not obtained from conventional titanium alloys.
Multi-functionalization of biomedical Zr-based alloys by combining additive manufacturing with plastic deformation

Nomura Naoyuki, KAWASAKI Akira, KIKUCHI Keiko

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

2015/04/01 - 2018/03/31

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In this study, we tried to develop low magnetic Zr-based alloy suppressing MRI artifacts with low Young’s modulus by powder bed fusion and plastic deformation. The Zr alloy builds were fabricated with various building parameters. The amount of porosity in the builds depended on the energy density calculated using building parameters. Also, crystallographically oriented and randomly oriented build were obtained. The Young’s modulus of both the builds varied during cyclic tensile test. This behavior may be attributed to deformation-induced phase transformation. Therefore, we demonstrated the possibility of controling Young’s modulus for Zr alloy build by applying plastic deformation.
Generic biofunctionalization of metals with electrodeposition of functional and biomolecules

TAKAO Hanawa, DOI Hisashi, ASHIDA Maki, TSUTSUMI Yusuke

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: Tokyo Medical and Dental University

2010/04/01 - 2015/03/31

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The mechanism of the inhibition of bacterial adhesion and biofilm formation on titanium with electrodeposition of PEG was elucidated. RGD-immobilized through electrodeposited PEG on titanium is effective to improve the hard tissue compatibility of titanium when the material was implanted into rat tibia. Moreover, the ccurrent density was large when concetration of NH2-PEG-NH2 in electrolite. This indicated thatNH2-PEG-NH2 electricallly disociated and undisociated repeatedly near titanium surface during electrodeposition and fibnally the amino terminals bond to titanium surface, generating the immbolization with U-shape. On the other hand, MPC polymer is also electrodeposited to titanium surafce by electrodeposition and the surafce inhibited eh adhesion of fibrin network formation.
Development of Zr-based alloys to suppress MRI artifacts for biomedical applications

NOMURA Naoyuki, HANAWA Takao, HISASHI Doi, TSUTSUMI Yusuke, OHNO Kikuo, SU Yalatu

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)

2010/04/01 - 2014/03/31

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Zr-based alloys and composites were developed to suppress the MRI artifacts in this study. Magnetic susceptibility of Zr alloys containing Nb or Mo varied depending on the phase constitution and the volume fraction. Also, the magnetic susceptibility was controlled by the integration of Ag which was negative magnetic susceptibility. We showed that artifact volume decreased with decreasing magnetic susceptibility quantitatively. Therefore the developed Zr-based alloy and composites can decrease MRI artifacts.
Development of smart bone plates showing the Young's modulus decrease by utilizing bio-degradable materials

NOMURA Naoyuki, DOI Hisashi, TSUTSUMI Yusuke, SU Yalatu, NAKAMOTO Takayuki

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

2011 - 2013

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Smart bone plates showing the Young's modulus decrease were developed to suppress the stress-shielding effect in this study. Firstly, a porous Co-Cr-Mo alloy was fabricated using a selective laser melting process. The porous Co-Cr-Mo alloy contains three dimensionally crossed pore channel and the Young's modulus was close to the human bone Secondly, the hydroxyapatite was introduced through the pore cannel and sintered. The Young's modulus of the composites increased compared to that of the porous Co-Cr-Mo alloy, suggesting that the modulus can be controlled by the integration of bio-degradable materials.
Creation of metal surface adhesive to soft tissue

HANAWA Takao, NOMURA Naoyuki, DOI Hisashi, TSUTSUMI Yusuke, MIGITA Satoshi

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: Tokyo Medical and Dental University

2011 - 2013

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To immobilize collagen uniformly to titanium surface without self-assembly of collagen, electrodeposition technique with alternative current, repetition of anodic current and cathodic current charge, was the most effective. The soft tissue compatibility of titanium immobilized collagen was evaluated by cell culture of fibroblast. The results revealed that initial adhesion, expansion, and proliferation of cells were not inhibited on the surface. On the other hand, it was difficult to evaluate the bonding strength between soft tissue and substrate material. Further research to obtain reproducible and reliable evaluation of sft tissue compatibility protocol is necessary.
Surface treatments of bone fixators consiting of titanium alloys to inhibit the formation of callus

HANAWA Takao, NOMURA Naoyuki, DOI Hisashi, TSUTSUMI Yusuke

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: Tokyo Medical and Dental University

2006 - 2009

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Difference in the ability of calcium phosphate formation between Ti and Zr was caused by the difference in the stability of surface oxide films on both metals. Zr coating was effective to prevent calcium phosphate formation on Ti. On the other hand, cathodic polarization of Zr in a supporting electrolyte made it possible to add the ability of calcium phosphate formation to Zr and its mechanism was elucidated. Zr coating is effective to prevent the formation of callus on Ti alloys used for internal bone fixators.
高延性と高強度の両立を目指した窒素添加生体用コバルトクロムモリブデン合金の開発

野村直之

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)

2006 - 2007

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Ni含有しないCo-Cr-Mo合金の室温での引張り伸びは10%以下と低く、加工性に乏しいことが問題となっている。この問題を解決するため、Niに代わるFCC安定化元素を添加した、加工性のある生体用Co-Cr-Mo合金の開発について研究を行った。その結果、CoCrMo合金に対して、Cr2Nを添加してアーク溶解を行い、CoCrMoN合金を溶製したところ、Nを0-0.25mass%含有するCo-Cr-Mo合金を作製することが可能であった。これらの窒素添加合金から薄板を切り出し、冷間圧延に供したところ、圧下率40%程度の圧延が可能であった。これ以上の圧延を施すと圧延面上に圧延方向に対して垂直なひび割れが発生した。冷間加工後のそれぞれの試料に対してX線回折を行ったところ、全ての試料においてほぼε相単相となっていた。このことは、窒素添加材においても変形モードはひずみ誘起マルテンサイト変態(TRIP)に保たれていることを示唆している。冷間圧延材に対して、700℃、800℃、900℃、保持時間1時間の条件にて窒素添加Co-29Cr-6Mo合金の熱処理を行ったところ、700℃では加工組織が残存しているが、800℃以上で等軸な結晶粒が確認された。しかしその結晶粒径はミクロンオーダーであった。目標のナノサイズまで粒径を微細化するためには昇温速度の増加と熱処理保持時間の短縮が必要であろう。硬さ試験により時効処理した圧延材の硬さを調査した結果、最も優れた時効材において560Hv程度の値となった。CoCrMo合金鍛造材の硬さは420Hv程度であることから、無添加材に比較して高い硬さを示した。この硬さの値から降伏強度も上昇することが推測される。
生体親和性Ti-Nb-Sn超弾性合金の多孔質化と変形挙動の解析

野村直之

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: 岩手大学

2003 - 2005

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本年度(平成17年度)では、多孔質Ti-Nb-Sn合金焼結体の機械的特性を調査するとともに、多孔質体の弾性率を有限要素法により算出した。以下に具体的な実験項目を記し、その結果について報告する。 (1)多孔質Ti-Nb-Sn合金多孔質焼結体の機械的特性 Ti-Nb-Sn合金多孔質焼結体の弾性率および三点曲げ強度は、純チタンやチタン合金(Ti-15Mo-5Zr-3Al)多孔質体の挙動と同様に、気孔率の増加に伴って直線的に減少する。これらのチタン基多孔質体と強度特性を比較すると、同じ弾性率を有する多孔質体の場合には、Ti-Nb-Sn合金の0.2%耐力は最も高い値を示し、骨と同等の低弾性率を気孔を導入することにより達成し、従来の多孔質体よりも優れ、かつ骨の強度を大きく上回る新規生体用多孔質Ti-Nb-Sn焼結体の開発に成功した。 (2)有限要素法を用いた多孔質チタンの均質化弾性率の算出多孔質体の弾性率は、合金自体の弾性率だけではなく、粉末の充填形体に依存するものと予想される。そこで粉末の充填形態を面心立方格子、体心立方格子、単純立方格子としてネック径を変化させた場合の均質化弾性率を有限要素法により算出した。その結果、面心立方格子および体心立方格子の場合にはネック径の増加とともに気孔率が減少し、弾性率は増加する。その値はこれまで報告された多孔質チタンの気孔率と弾性率の関係と一致した。つまり、高温かつ荷重存在下におけるチタン粉末は容易に変形して緻密な形態をとり、その弾性率は緻密に粒子を充填したものに近くなることを示している。しかし、充填度の低い単純立方格子では、ネック径が増加しても気孔率が増加せず、実験値から得られた気孔率と弾性率の関係とは一致せず、より高気孔率側に弾性率の値がシフトすることが本研究にて明らかになった。
Processing for multi-functions・Materials development

HANADA Shuji, YOSHIMI Kyosuke, MURAYAMA Yonosuke, MASAHASHI Naoya, NOMURA Naoyuki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas (B)

Category: Grant-in-Aid for Scientific Research on Priority Areas (B)

Institution: Tohoku University

1999 - 2001

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Strength, fracture toughness and oxidation resistance were selected among many properties for high temperature structural materials and harmonic material design was studied. In-situ composites consisting of ductile particle-dispersion refractory intermetallics and ceramics in which both the phases are thermodynamically equilibrated were synthesized by controlling alloying behavior and microstructure. Directionally solidified eutectic ZrC/Mo in-situ composite, which is prepared by the high frequency floating zone melting method, shows the room temperature fracture toughness of about 20 MPam^<1/2> and high strength at 1500C of 420 MPa. The high fracture toughness is attributable to crack deflection arising from decohesion between ZrC and Mo and the high strength at 1500C is due to solid solution strengthening and microstructure refinement. High temperature strength of Mo-Si-B alloys is shown to increase significantly by alloying without sacrificing room temperature fracture toughness. The new concept of "pseudo in-situ composite" is presented and pseudo in-situ Mo-Si-B-O composite is found to exhibit excellent oxidation resistance at 1400C. Based on the fundamental research of the diffusion bonding, clad hot rolling is successfully carried out using Fe_3Al base alloys and CrMo steel. The clad hot rolled sheet shows harmonically high strength, good oxidation resistance and high fracture toughness.
回転電極法を用いたニオブーアルミ基合金の作製と組織制御

野村直之

Offer Organization: 日本学術振興会

System: 科学研究費助成事業特別研究員奨励費

Category: 特別研究員奨励費

Institution: 東北大学

1996/04 - 1999/03

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Social Activities 3

模擬授業

2015/09/11 -

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青森県弘前高校にて、「金属積層造形技術と医療応用」について講義を行った。また、生徒の研究発表についてアドバイスを行った。
模擬授業

2014/09/14 -

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山形県山形南高校にて、「金属用３Ｄプリンターと医療応用」に関する模擬講義を行った。
模擬講義

2014/01/15 -

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山形県鶴岡工業高校にて、「さびない金属チタン」に関する模擬講義を行った。また、生徒の研究内容について助言を行った。