Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1990-06-25
1993-06-01
Group, Karl
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505782, 505739, 501123, 501126, 264 66, 264 67, 264235, C01G 2900, C04B 3560
Patent
active
052159612
ABSTRACT:
A machinable high Tc ceramic superconductor is formed by weighing and mixing appropriate stoichiometric amounts of Bi.sub.2 O.sub.3, SrCO.sub.3, CaCO.sub.3, and CuO (BSCCO), removing carbonates from the mixture, melting the mixture, casting the melted mixture into a mold, and inducing superconductivity and growth of randomly oriented platelets in the cast.
REFERENCES:
patent: 5047391 (1991-09-01), Bock et al.
Das et al, "Casting High-T.sub.c Superconducting BiSCCO", Journal of Supenductivity vol. 2, #2, Jun. 1989, pp. 253-263.
Oota et al, Superconductivity at 100K in Bi-Pb-Sr-Ca-Cu-O, Jap. Jour. Appl. Phys., vol. 27, No. 8, Aug. 1988, pp. L1445-L1447.
Bock et al, "Preparation of Single Phase 2212 Bismuth Strontium Calcium Coprate by Melt Processing", Solid Stats Communications, vol. 72, #5, pp. 453-458, 1989.
Handbook of Glass Manufacture, p. 345, 1958.
Garzon et al, "Amorphous-Crystalline Transformation in Bismuth-Oxide-Based High Superconductors", Appl. Phys. Lett. 53(9) 29 Aug. 1988, pp. 805-807.
Hicks et al, "Preparation of Bi-Sr-Ca-Cu-O Superconductors from Oxide-Glass Precursors", Appl. Phys. Lett. 53(5) 1 Aug. 1988, 423-25.
Rayne et al., "Machining Superconducting BSSCO Devices", Physica C 162-164, 1989 pp. 879-880.
Shelton, et al., "Machining Superconducting BISCCO Devices", Physica C, 162-164 (1989) 879-880.
Bender Barry A.
Jones L. David
Rayne Roy J.
Soulen, Jr. Robert J.
Toth Louis E.
Bonner C. M.
Edelberg Barry A.
Flannagan Thomas V.
Group Karl
McDonnell Thomas E.
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