| Project/Area Number |
26420856
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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 |
Nuclear fusion studies
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| Research Institution | Daido University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
西島 元 国立研究開発法人物質・材料研究機構, その他部局等, その他研究員 (30333884)
長村 光造 公益財団法人応用科学研究所, その他部局等, 理事・特別研究員 (50026209)
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| Co-Investigator(Renkei-kenkyūsha) |
NISHIJIMA Gen 物質・材料研究機構, 研究員 (30333884)
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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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 残留ひずみ / 残留応力 / 複合材 / 応力測定 / ひずみ測定 / 超電導 / 線膨張係数 / Ｘ線応力測定法 / セラミック複合材 / アンモニア窒化 / Ｘ線応力測定 / 超伝導 |
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| Outline of Final Research Achievements |
In general, the mechanical strength of practical Nb3Sn wires is weak because of its annealed Cu ratio. There is a need to strengthen the wire further for employing nuclear fusion application and nuclear particle physics. In order to reinforce practical Nb3Sn wires, we proposed a coating technique of CrN layer on the wire surface. CrN has high Young’s modulus and low CTE and so the CrN coatings can improve the strength and thermal stress. In order to evaluate residual stress in the Nb3Sn wires coated by CrN thin layer, we applied X-ray stress measurement method using the laboratory X-ray apparatus. We will report about the stress/strain behavior, and the residual stress introduced in Nb3Sn filaments.
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