| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of an Nb<SB>3</SB>Al compound based superconductive wire in which contact resistance of interface is further decreased by compounding strongly external matrix and a stabilizer, and by compounding the stabilizer well in the whole circumference of the wire material. SOLUTION: In the manufacturing method of the Nb<SB>3</SB>Al compound based superconductive wire in which an Nb-Al oversaturated solid solution is formed by heating and cooling a mulch-wire rod 12 wherein a plurality of single wire rods 8 is covered by the external matrix 9', and in which an Nb<SB>3</SB>Al phase is precipitated by applying a reheating treatment to this at a prescribed temperature, after the cooling treatment, a metal material for cooling is removed from the surface of the external matrix 9', the external matrix 9' is covered by the stabilizer 13, a strong surface reduction working is applied in which the mulch-wire rod 12 and the stabilizer 13 are plastically deformed by a four-directional roll, and after the external matrix is made to be the wire material of a rectanglular cross-sectional face in which the interface is integrated without a gap, the reheating treatment is applied. COPYRIGHT: (C)2005,JPO&NCIPI
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