| 摘要 |
PURPOSE:To manufacture a bismuth-based oxide superconductive wire having high critical current density and critical current while lessening the production of non-superconductive phase. CONSTITUTION:A superconductive wire manufacturing method involves the steps of filling a metal sheath with bismuth-based oxide superconductor or its raw material powder, plastic-processing the metal sheath filled with the powder to make it a wire, carrying out primary heating the resulting wire, carrying out plastic process or pressing process of the wire after the heating process, carrying out secondary heating the processed wire, and powder having composition ratio of (Bi+Pb):Sr:Ca:Cu:2.2:2:2:3 with + or -5% allowances respectively and 0.3<=Pb<=0.4 is used as the powder with which the sheath is filled. |
