| 摘要 |
PROBLEM TO BE SOLVED: To provide a compound superconducting wire material and its manufacturing method wherein high temperature heat-treatment is not necessary after being compounded. SOLUTION: This is provided with an NbTi based multi-core superconducting filament 2 formed by means that a plurality of NbTi based superconducting member 2A with copper covering 3 are embedded into a cross-sectionally circular first copper matrix 2B and a plurality of the first copper matrices 2B (nineteen) are embedded into a second copper matrix 2C, and a plurality of MgB<SB>2</SB>based superconducting filaments 4 embedded along the axis direction of a pipe wall 5c of a non-oxygen copper pipe 5 formed outward this NbTi based multiple core superconducting filament 2. COPYRIGHT: (C)2005,JPO&NCIPI
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