| 摘要 |
PCT No. PCT/US97/16916 Sec. 371 Date Mar. 18, 1999 Sec. 102(e) Date Mar. 18, 1999 PCT Filed Sep. 23, 1997 PCT Pub. No. WO98/14961 PCT Pub. Date Apr. 9, 1998A process for increasing the resistivity of a HTS oxide composite sheath including heating a superconductive HTS oxide composite, the composite including a sheath including silver, in the presence of mercury at temperatures sufficient to form a silver-mercury alloy is provided together with a HTS oxide composite which includes a high temperature superconductor oxide core surrounded by a metallic sheath, the metallic sheath including silver and mercury. Also provided is a process for preparing a HTS oxide composite having an enhanced transport critical current density including placing the HTS oxide composite within a sealed, evacuated container, and, heating the HTS oxide composite for time and at temperatures sufficient for enhancement of transport critical current density in comparison to the transport critical current density of the HTS oxide composite prior to the heating.
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