Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1988-10-31
1991-09-10
Ryan, Patrick J.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505701, 505702, 505703, 505704, 428688, 428698, 428699, 428901, 428930, B32B 300
Patent
active
050473891
ABSTRACT:
A substrate for supporting a ceramic superconductor comprises a metallic base member having a constituent oxide former which establishes an oxide layer on the surface of the substrate. A layer of ceramic superconducting material covers the substrate with the oxide layer between the metallic base member and the ceramic superconductor layer to inhibit the interdiffusion of respective constituent elements between the metallic base member and the ceramic layer. For applications requiring the transmission of electrical current through the ceramic layer over relatively extensive distances, the substrate can be formed as a wire.
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 T.sub.c 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 Letter 53(8), Aug. 22, 1988, pp. 710-712.
"High T.sub.c Superconducting 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 Sustrates" by Nakajima et al., Applied Physics Letter 53(15), Oct. 10, 1988, pp. 1437-1439.
"Lanthanum Gallate 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 93 K 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 T.sub.c 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.
JA 89-245979/34; Sumitomo Elec.; 1-11-88.
Elsner Frederick H.
Raggio William A.
Woolf Lawrence D.
General Atomics
Ryan Patrick J.
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