Nickel-based substrate for ceramic superconductor

Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k

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505701, 505702, 505703, 505704, 428457, 428688, 428930, B32B 900

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active

050065076

ABSTRACT:
A ceramic superconductor comprises a substantially nonmagnetic preannealed nickel-based alloy substrate which supports a ceramic superconductor. The substrate may include aluminum to strengthen the substrate and make it less magnetic. The substrate is substantially devoid of minority constitutent oxide shell formers and the ceramic is formed on the substrate by sintering superconductor grains at temperatures above 1000.degree. C. to enhance densification of the ceramic.

REFERENCES:
"Thermal Spraying Superconducting Oxide Coatings" by Kirkland et al., Advanced Ceramic Materials, vol. 2, No. 3B, Special Issue 1987, pp. 401-410.
"Large Area Plasma Spray Deposited Superconducting YBa.sub.2 Cu.sub.3 O.sub.7 Thick Films" by Cuomo et al., Advanced Ceramic Materials, vol. 2, No. 3B, Special Issue 1987, pp. 422-429.
"High Tc Superconducting Films of Y-Ba-Cu Oxides Prepared by Low-Pressure Plasma Spraying" by Tachikawa et al., Applied Physics Letter 52(12), Mar. 21, 1988, pp. 1011-1013.
"Reaction of Ba.sub.2 YCu.sub.2 O.sub.6.9 Films with Yttria-Stabilized Zirconia Substrates" by Cima et al., Applied Physics Letters 53(8), Aug. 1988, pp. 710-712.
"High Tc Superconductivity in Y--Ba--Cu--O Screen-Printed Films" by Sacchi et al., Applied Physics Letter 53(12), Sep. 19, 1988, pp. 1110-1112.
"Interdiffusion and Interfacial Reaction Between a YBa.sub.2 Cu.sub.3 O.sub.x Thin Film and Substrates" by Nakajima et al., Applied Physics Letter 53(15), Oct. 10, 1988, pp. 1437-1439.
"Lanthanum Gellate Substrates for Epitaxial High-Temperature Superconducting Thin Films" by Sandstrom et al., Applied Physics Letter 53(19), Nov. 7, 1988, pp. 1874-1876.
"Processing Techniques for the 93K Superconductor Ba.sub.2 YCu.sub.3 O.sub.7 " by Murphy et al., Science, vol. 241, Aug. 19, 1988, pp. 922-930.
"On The New Substrate Materials for High Tc Superconducting Ba--Y--Cu--O Thin Films" by Komatsu et al., Japanese Journal of Applied Physics, vol. 27, No. 9, Sep. 1988, pp. L1686-L1689.
CA 82(26):179651f, Siemens A. G., 11-20-72, TrinohiumsTannane coated Superconductors.

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