Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconducto

Details Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconducto Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconducto

1993-04-06

1994-10-11

Walsh, Donald P.

Superconductor technology: apparatus, material, process

Processes of producing or treating high temperature...

Process of making wire, tape, cable, coil, or fiber

419 22, 419 30, 419 41, 419 38, 419 31, B22F 100, B22F 312

Patent

active

053545354

ABSTRACT:
An article and method of manufacture of (Bi,Pb)-Sr-Ca-Cu-O superconductor. The superconductor is manufactured by preparing a first powdered mixture of bismuth oxide, lead oxide, strontium carbonate, calcium carbonate and copper oxide. A second powdered mixture is then prepared of strontium carbonate, calcium carbonate and copper oxide. The mixtures are calcined separately with the two mixtures then combined. The resulting combined mixture is then subjected to a powder in tube deformation and thermal processing to produce a substantially phase pure (Bi,Pb)-Sr-Ca-Cu-O superconductor.

REFERENCES:
patent: 5057488 (1991-10-01), Arendt et al.
"An alternate preparation for (Bi, Pb).sub.2 Ca.sub.2 Sr.sub.2 Cu.sub.3 O.sub.x ", R. H. Arendt et al, Physica C176 (1991) 126-130.
"The fabrication of high critical current capability bismuth superconductor tape", R. H. Arendt et al., Physica C194, 383 (1992).

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