Koki Asai
(Sophia University)
;
Tsuyoshi Yagai
(Sophia University)
;
Nobuya Banno
(Research Center for Energy and Environmental Materials (GREEN)/Hydrogen Technology Materials Field/Advanced Superconducting Wire Group, National Institute for Materials Science)
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(abstract)Enhancing the characteristics of Nb3Sn superconducting wire is essential for the development of magnets for fusion reactors like ITER and DEMO. It has been established that Ti-doping has a significant effect on enhancing the upper critical magnetic field (Bc2). Ti is generally doped into Nb or Sn-alloys in practical Nb3Sn superconducting wires, and it would be preferable to add Ti to the Sn side from a manufacturing perspective. However, Ti-doping on Sn sites could form some undesirable stable compounds layers at the interface with Nb as a diffusion barrier for Sn during the Nb3Sn layer formation. In this study, specific diffusion couples of Nb/Cu/Sn were fabricated with different combinations of Ti and Zn doping to Cu and Sn and their diffusion reaction behaviors in Nb3Sn layer formation were investigated. Besides, anticipating a potential grain refinement effect, an Mg and Zn co-doped sample was additionally fabricated and the effect of Mg addition was compared.
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Applied Superconductivity Conference 2024
(2024-09-01 - 2024-09-06)
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Manuscript type: Not a journal article
MDR DOI: https://doi.org/10.48505/nims.5186
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Updated at: 2024-12-19 16:30:54 +0900
Published on MDR: 2024-12-19 16:30:54 +0900
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