发明名称 |
PROCESS FOR MANUFACTURING WIRE OR STRIP FROM HIGH-TEMPERATURE SUPERCONDUCTORS AND SHEATHS USED FOR IMPLEMENTING SAID PROCESS |
摘要 |
<p>In a known process, oxide powders derived from the four-component systems yttrium-barium-copper-oxygen or lanthanum-strontium-copper-oxygen are mixed, pressed, sintered, ground and then heat-treated to produce a superconducting material which can be shaped to the desired cross-section. According to the invention, the powder is compacted by isostatic pressing and the blank so obtained is extruded at a temperature >/= 500 DEG C to form a metallic sheath with a deformation ratio of at least 90 %. The extruded blank is then converted to wire or strip. The current-carrying capacity of the high-temperature superconductor is improved by the extrusion and the resulting alignment of the crystallites. The process can be implemented using known high-temperature semiconducting materials.</p> |
申请公布号 |
WO8906053(A1) |
申请公布日期 |
1989.06.29 |
申请号 |
WO1988DE00763 |
申请日期 |
1988.12.13 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
GUNZELMANN, KARL-HEINZ;MUELLER, REINER;HERKERT, WERNER;GROSSE, JOACHIM;TIEFEL, GUENTER |
分类号 |
B21F19/00;B30B11/00;B30B11/22;C04B35/45;C04B35/645;H01B12/04;H01B13/00;H01L39/24;(IPC1-7):H01L39/24 |
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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