Method of making electrical contacts on bi-based oxide supercond

Details Method of making electrical contacts on bi-based oxide supercond Method of making electrical contacts on bi-based oxide supercond

1994-11-15

1996-04-09

King, Roy V.

Superconductor technology: apparatus, material, process

Processes of producing or treating high temperature...

With melting

505706, 505739, 427 62, 264259, H01L 3924

Patent

active

055061990

ABSTRACT:
The invention relates to solid bodies made of high-temperature superconducting material to which contact is made by solid, compact metallic conductors.
To produce said solid bodies, high-temperature superconducting material is either melted completely or a melt is obtained from the oxides of bismuth, strontium, calcium and copper, and, optionally, of antimony and lead. The solid, compact metallic conductors made of silver, gold, a platinum metal or an alloy containing said metals are then partially encased in the melt and the melt is allowed to solidify. Finally, the solid body obtained is annealed together with the conductors in a first stage at temperatures of from 710.degree. to 810.degree. C. and in a second stage in an oxygen-containing atmosphere at temperatures of from 750.degree. to 880.degree. C.

REFERENCES:
patent: 4963523 (1990-10-01), Ekin et al.
patent: 5047391 (1991-09-01), Bock et al.
Komatsu et al, "Effect of Sb Addition on the Formation of High-Tc Phase in the Bi-Pb-Sr-Ca-Cu-O Ceramics", Jpn. J. Appl. Phys. 28(7) Jul. 1989 L1159-1162.
Gazit, Mat. Res. Bull. vol. 24 pp. 467-474, 1989.
Hongbao, Solid State Comm. vol. 69 No. 8, pp. 867-868., 1989.

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