2010 Fiscal Year Final Research Report
Study of composite fabrication process of new Nb3Sn superconducting wire and its performance improvement
| Project/Area Number |
21760566
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Structural/Functional materials
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
KIKUCHI Akihiro National Institute for Materials Science, 超伝導材料センター, 主幹研究員 (50343877)
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| Project Period (FY) |
2009 – 2010
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| Keywords | 超伝導線材 / Nb3Sn / Ti2Sn3化合物 / ブロンズ法 / 臨界電流密度 / 臨界温度 / 伸線加工 / 粉末 |
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| Research Abstract |
The Hybrid Bronzed Process, which was having the hybrid configuration of the bronze, the internal-Sn and the powder-in-tube processes was studied. In this new process, the brittle Ti2Sn3 powders are used as an additional tin source for the alpha bronze matrix. After the reaction, significantly thick Nb3Sn layers were formed, and they showed no concentration gradient of Sn and Ti. The quantitative analysis revealed that the concentration of Ti in the thick Nb3Sn layer was approximately 1.7-2.0 at%. And their Tc was approximately 17.5 K. Nb3Sn layer Jc of the hybrid bronze processed wire was 2 times greater than that of commercial bronze processed Nb3Sn wires.
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