发明名称 |
METHOD OF PREPARING BISMUTH OXIDE SUPERCONDUCTING WIRE |
摘要 |
A manufacturing method wherein a metal sheath is filled with a powder having a composition such that the amounts of Sr, Ca and Cu are larger than conventional so that in addition to the 2223-phase of (Bi, Pb)-Sr-Ca-Cu the phase of Sr-Ca-Cu-O may be precipitated, and then, this metal sheath is subjected to a plastic working, a primary heat treatment, another plastic working, and a secondary heat treatment in this order. A pinning point based on the phase of Sr-Ca-Cu-O is introduced into the superconductor of the obtained bismuth based oxide superconductive wire material, and thereby, the magnetic field characteristic of the critical current density is improved. |
申请公布号 |
CA2092180(C) |
申请公布日期 |
1996.12.03 |
申请号 |
CA19922092180 |
申请日期 |
1992.07.22 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD.;JAPAN AS REPRESENTED BY DIRECTOR GENERAL OF NATIONAL RESEARCH INSTITUTE FOR METALS AND SCIENCE AND TECHNOLOGY AGENCY;RESEARCH DEVELOPMENT CORPORATION OF JAPAN |
发明人 |
KATO, TAKESHI;SATO, KENICHI |
分类号 |
B21F19/00;C01G1/00;C01G29/00;C04B35/00;C04B35/45;H01B12/04;H01B13/00;H01L39/24;(IPC1-7):H01B13/00;B21L1/00;B21L9/00;H01B1/08 |
主分类号 |
B21F19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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