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U.S. Department of Energy
Office of Scientific and Technical Information

Development of elements of a high-Tc superconducting cable. Rept. for 1 Jan-31 Mar 91

Technical Report ·
OSTI ID:5197663
The redirected program is aimed at the development of long lengths of silver-clad BSCCO. BSCCO-2223 is the material of choice with 20K the operating temperature goal. Such a tape conductor ultimately could be used in a coil for a magnet, motor or generator. The program is designed to tackle several key problems with parallel tasks. A large variety of BSCCO powders will be prepared. Silver tubes packed with superconductor powder will be cold deformed to form tape conductors. Alternate methods of making silver-encapsulated superconducting tape will be explored. Variations in the powders and processing parameters will be used to optimize the tape Jc. It has been convincingly demonstrated that the highest Jc tapes are prepared from powder which is not fully reacted to BSCCO-2223. The superiority of pressing over rolling for the final deformation of the tapes has been proven and tentatively explained. Equipment is now available to measure currents up to 240A at 20K in fields as high as 9T. A low Jc degradation of bent tapes will allow coiled lengths to be processed.
Research Organization:
General Electric Co., Schenectady, NY (United States). Corporate Research and Development Center
OSTI ID:
5197663
Report Number(s):
AD-A-236151/7/XAB; CNN: N00014-88-C-0681
Country of Publication:
United States
Language:
English