| Project/Area Number |
11225205
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Center for Collaborative Research, The University of Tokyo |
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Principal Investigator |
AIZAWA Tatsuhiko The University of Tokyo, Center for Collaborative Research, Professor, 国際・産学共同研究センター, 教授 (10134660)
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| Co-Investigator(Kenkyū-buntansha) |
MITSUO Atsushi RCAST, Visiting Researcher, 先端科学技術研究センター, 客員研究員
KUWAHARA Hideyuki RCAST, Visiting Researcher, 先端科学技術研究センター, 客員研究員 (90132795)
KONDOH Katsuyoshi RCAST, Associate Professor, 先端科学技術研究センター, 特任助教授 (50345138)
WENBO Du RCAST, Post-Doctoral Fellow, 先端科学技術研究センター, 特別研究員 (90345166)
村石 信二 東京大学, 先端科学技術研究センター, 特任助手(常勤) (70345156)
諏訪 嘉宏 東京大学, 先端科学技術研究センター, 特任助手(常勤) (90339705)
都筑 律子 東京大学, 先端科学技術研究センター, 特任研究員(常勤) (80345165)
中野 博昭 東海大学, 開発工学科, 教授 (60056330)
三尾 淳 東京都立産業技術研究所, 研究開発部, 主任研究員
徐 陽 東京大学, 先端科学技術研究センター, 助手 (60323664)
長崎 千裕 東京大学, 大学院・工学系研究科, 助手 (90180471)
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| Project Period (FY) |
1999 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥65,600,000 (Direct Cost: ¥65,600,000)
Fiscal Year 2002: ¥18,800,000 (Direct Cost: ¥18,800,000)
Fiscal Year 2001: ¥20,400,000 (Direct Cost: ¥20,400,000)
Fiscal Year 2000: ¥12,800,000 (Direct Cost: ¥12,800,000)
Fiscal Year 1999: ¥13,600,000 (Direct Cost: ¥13,600,000)
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| Keywords | Solid-State Synthesis / Bulk Mechanical Alloying / Non-equilibration / Mg-Ni / Co / Fe systems / Mg-Si system / Cold Coating / Solid-State Recycling / Mg-base bio-compatible film formation / 金属生産工学 / 環境材料 / 水素 / 材料加工・処理 / 省エネルギー / 熱電材料 / 固相合成 / Mg合金 / 非平衡相 / Mg-Si / 水素吸蔵 / 熱電特性 / バリアフリープロセス / マグネシウム / Mg_2Ni / 低温相 / 格子ひずみ効果 / PCT-XRD同時測定 / イオンビームスパッタ法 / 化学修飾 / 物理修飾 / 生成エネルギー |
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| Research Abstract |
Toward nontraditional functionality of advanced magnesium alloys and compounds, this project is concerning with research and development of hydrogen storage, thermoelectricity and bio-compatible tissues. At the same time, the solid-state processing and forming, the cold-coating and bio-compatible film formation are developed to produce these new magnesium alloys and compounds. Among them, our developed bulk mechanical alloying (BMA) is further promoted for fine control of non-equilibrium phase by amorphization and nano-structuring, for fine control of contents in multi-phase system and for solid-state processing from granules and platelets. At first, Mg-Ni system is employed as a target system for non-equilibration via BMA. Hydrogenation and de-hydrogenation characteristics are significantly improved by this Ni-enrichment via nonequilibration. On this fundamental study in the binary system, material search for ternary alloys becomes promising through BBC-structuring. Mg-Si system is ne
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xt selected to demonstrate the effectiveness of the solid-state processing. In the conventional processings like self-heating synthesis and melting, the formation of Mg_2Si takes place above the melting point of magnesium. This leads to partial reaction to Mg_2Si and coursing of grain size for the synthesized Mg_2Si. In the present method, Mg_2Si is sold-state synthesized at room temperature and the grain size is refined to have the equivalent particle size to that of refined silicon before reaction. On this fundamental knowledge, the solid-state recycling is proposed to fabricate the reinforced composite magnesium alloy parts and performs with in-situ precipitated Mg_2Si in fine and uniform. In addition, various hydrogen storage alloys like Mg_2Co are invented by super-saturation through non-equilibration both in Mg-Co and Mg-Fe systems. The Cold-coating is proposed to make the hydrogen storage films in Mg-Ni/Co/Fe systems even on the polymer substrates. This success enables us to make research and development of new material film systems for fast-rate hydrogenation and de-hydrogenation and to profoundly investigate the functional films with metal-insulator transition through hydrogenation and de-hydrogenation. New dipping method is further invented to yield the hydroxiapatite coating (Hap) on the pure magnesium plate as a bio-compatible film for promotion of recovery of hard tissues. Less
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