2016 Fiscal Year Final Research Report
Development of practical Nb3Sn superconducting wire using Ceramic Coatings for Nuclear Fusion reactor
| 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(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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| 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 |
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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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| Free Research Field |
機械工学
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