| 摘要 |
PCT No. PCT/JP82/00144 Sec. 371 Date Dec. 30, 1982 Sec. 102(e) Date Dec. 30, 1982 PCT Filed Apr. 28, 1982 PCT Pub. No. WO82/03941 PCT Pub. Date Nov. 11, 1982.A superconductive substance is produced by fabricating any one metal (17) of niobium and vanadium and an easily deformable metal (16) such as Cu into one piece and working it to produce a composite metallic wire, chemically dissolving and removing the easily deformable metal (16) from the composite metallic wire, and then depositing a tin or gallium-base metal (18) and applying heat treatment. Also, a process for producing a superconductive substance comprising fabricating any one metal of niobium and vanadium and an easily deformable metal such as Cu containing at least one metal of tin and gallium into one piece and working it to produce a composite metallic material, heat treating the composite metallic material to form a superconductive substance, and then chemically dissolving and removing the easily deformable metal as a non-conductive substance from the composite metallic material is disclosed. A superconductive material produced by providing a metal having a high mechanical strength around the superconductive substance so as to directly envelop it and a process for producing the same are also disclosed.
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