Critical Current Densities of Multifilamentary Nb3Sn Conductors by Internal Diffusion Method.
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概要
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Multifilamentary Nb3Sn composite conductors with submicron filament diameters have been developed by the internal tin diffusion method. The heat treatment condition to optimize the critical current density was studied in detail. The different heat treatment was performed in two stages according to the arrangement of the copper clad tin cores in strands. The first stage is for the homogenization heat treatment (HHT) of tin in the copper matrix. In the second stage, the reaction heat treatment (RHT) of Nb3Sn was applied. With a suitable combination of HHT and RHT, Nb3Sn with a critical current density high enough for a.c. use was formed at a reaction temperature as low as 350°C.
- 公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)の論文
公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会) | 論文
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