Processing method for superconducting ceramics

Details Processing method for superconducting ceramics Processing method for superconducting ceramics

1990-05-07

1993-02-02

Walsh, Donald P.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505739, H01B 1200

Patent

active

H00011380

ABSTRACT:
A process for preparing a superconducting ceramic and particularly YBa.sub.2 Cu.sub.3 O.sub.7-.delta., where .delta. is in the order of about 0.1-0.4, is carried out using a polymeric binder which decomposes below its ignition point to reduce carbon residue between the grains of the sintered ceramic and a nonhydroxylic organic solvent to limit the problems with water or certain alcohols on the ceramic composition.

REFERENCES:
patent: 3640764 (1972-02-01), Shelvin
patent: 3975201 (1976-08-01), Greenstein
patent: 4724021 (1988-02-01), Martin et al.
patent: 4978515 (1990-12-01), Johnson
Reed, Introduction to the Principles of Ceramic Processing, 1988, p. 13, 255-260.
Yen et al, "High Tc Superconducting y-Ba-Cu-O Thick Film by Screen Printing" Mat. Res. Soc. Syn. Proc., vol. 99, 1988 (Symposium: Nov. 30-Dec. 4, 1987), pp. 711-713.
Chan et al, "Superconducting Paste", Mat. Res. Soc. Sym. Proc., (Symposium Date: Apr. 4-9, 1988) pp. 105-108.
Ishii et al, "Fabrication of Superconducting YBa.sub.2 Cu.sub.3 O.sub.7-.delta. Films by Tape Casting Method", Jap Jour. App. Phy. vol. 26, Nov. 1987, pp. L1959-L1960.

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