Development of Elements of a High Tc Superconducting Cable
Rept. for 1 Jul 1989-30 Jun 1990
GENERAL ELECTRIC CORPORATE RESEARCH AND DEVELOPMENT SCHENECTADY NY
Pagination or Media Count:
Further effort on the YBCO system will not be likely to result in a polycrystalline conductor with the desired critical current. A realignment of the program has been undertaken with the effort redirected to the use of a bismuth strontium calcium cuprate BSCCO conductor at 20K. This was done because of the abundant evidence for the much greater critical currents possible in polycrystalline BSCCO. The overall goal of the program, the development of materials and processes for the fabrication of a composite high Tc superconductor element, remains unchanged. The goal of the program was the development of materials and processes for the fabrication of a composite YBCO element made of a superconducting coating on a supporting fiber. The proposed application was a DC transmission line operating at 77K. At mid-program a decision was to be made on the feasibility of fabricating a long-length conductor of polycrystalline YBCO. At this time there is no solution in sight for the weak-link low JC problem in long polycrystalline YBCO wires.
- Fabrication Metallurgy
- Electricity and Magnetism