| 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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| 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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