2016 Fiscal Year Final Research Report
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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| Project Period (FY) |
2014-04-01 – 2017-03-31
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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 |
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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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| Free Research Field |
金属材料工学
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