Stock material or miscellaneous articles – Composite – Of metal
Patent
1973-10-05
1977-01-04
Weiffenbach, Cameron K.
Stock material or miscellaneous articles
Composite
Of metal
428472, 427 62, 427250, B05D 512, B32B 1504, C23C 1302
Patent
active
040014819
ABSTRACT:
A superconductive element comprising a substrate, at least one face of which is composed of alumina, and a layer of a superconductive compound of the Nb-Al, Nb-Ga, Nb-Al-Ge or Nb-Ga-Al system formed on the alumina face, which exhibits an excellent critical current density in either a low magnetic field or a high magnetic field and simultaneously has a high critical temperature, and in which peeling or cracking is not caused, and a method for preparing such superconductive element comprising the step of vaccum depositing the above-noted superconductive compound on an alumina surface of a substrate.
REFERENCES:
patent: 3328200 (1967-06-01), Neugebauer
patent: 3472694 (1969-10-01), Hanak
patent: 3552352 (1971-01-01), McConnell
patent: 3620833 (1971-11-01), Gleim et al.
Foner et al., Properties of Superconducting Nb.sub.3 Ga Materials, In Applied Superconductivity Conference, May 1972, pp. 404-406.
Hammond et al., Superconducting Properties of Nb.sub.3 (Al,Ge) Prepared by Vacuum Vapor Deposition of the Elements, In J. Appl. Phys., vol. 43, No. 5, (May 1972), pp. 2407-2413.
Amatuni, et al., Linear Thermal Expansion of Quartz & Aluminum Oxide Crystals, In General Physical Chemistry, vol. 66, 1957, p. 5577, Article 59119m.
Kawabe Ushio
Kudo Mitsuhiro
Taguchi Sadanori
Tarutani Yoshinobu
Hitachi , Ltd.
Varndell, Jr. R. Eugene
Weiffenbach Cameron K.
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