Mechanism of resistance to hydrogen embrittlement and reliability of multi-phase Nb-TiNi alloys
| Project/Area Number |
26420719
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Kanazawa University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
山田 良穂 金沢大学, 機械工学系, 教授 (20126626)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Keywords | 水素透過 / 組織制御 / 水素吸蔵 / 耐水素脆化性 / 拡散 / 構造変化 / 結晶方位 / 微細組織 |
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| Outline of Final Research Achievements |
The tungsten added Nb35W5Ti30Ni30 alloy showed similar microstructure, crystal structure and hydrogen solubility coefficient to W free alloy, its hydrogen permeation property was not degraded by W addition. Furthermore, hydrogen capacity of W added alloy was reduced by 20%, which is expected to improve resistance to hydrogen embrittlement of the alloy. Hydrogen permeability and hydrogen absorption properties of the as-cast Nb-TiNi and Nb-TiCo alloys were investigated. Hydrogen permeation in Nb-TiNi and Nb-TiCo alloys was contributed by hydrogen solubility coefficient and hydrogen diffusion coefficient, respectively.
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Report
(4 results)
Research Products
(42 results)
