Superplastic forming of YBa.sub.2 Cu.sub.3 O.sub.7-x ceramic sup

Details Superplastic forming of YBa.sub.2 Cu.sub.3 O.sub.7-x ceramic sup Superplastic forming of YBa.sub.2 Cu.sub.3 O.sub.7-x ceramic sup

1991-09-03

1994-02-08

Silbaugh, Jan H.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

264 56, 264 65, 264 66, 264320, 505739, 505780, H01L 3912

Patent

active

052848230

ABSTRACT:
A process for superplastically forming and shaping a solid object including 123 superconductor, including preparing a solid object having grains of 123 superconductor that have an average grain size of less than 10 microns, and superplastically deforming the prepared solid object by heating the solid object to between 500.degree. and 1015.degree. C. while simultaneously applying to said solid object stress which is less than the fracture strength of the solid object, thereby producing a strain rate in the solid object. The solid object may be a composite including silver or gold.

REFERENCES:
patent: 4411959 (1983-10-01), Braginski et al.
patent: 4419125 (1983-12-01), Charles et al.
patent: 4575927 (1986-03-01), Braginski et al.
patent: 4892861 (0000-01-01), Ray
patent: 4975414 (1990-12-01), Meeks et al.
patent: 4980340 (1990-12-01), Anderson et al.
patent: 5100867 (1992-03-01), Gunzelmann et al.
Samanta et al. "A Novel Processing Technique for Fabrication of Flexible YBa.sub.2 Cu.sub.3 O.sub.7-x Wire", J. App. Phys. 66(9) p. 4532 Nov. 1, 1989.
"Critical Current and Electronic Properties of YBCO-Ag Compounds", B. Dwir, M. Affronte and D. Pavuna, Physica C 162-164 (1989) 351-352, North-Holland.
"Effect of Silver and Silver Oxide Additions on the Mechanical and Superconducting Properties of YBa.sub.2 Cu.sub.3 O.sub.7-x Superconductors", J. Appl. Phys. 66(7), Oct. 1989, pp. 3154-3157.
"Phase-Equilbrium Diagram in the Ternary System Y.sub.2 O.sub.3 -BaO-CuO", Kunihiko Oka, et al., Japanese Journal of Applied Physics, vol. 27, No. 6, Jun. 1988, pp. L 1065-L 1066.
"Hot Isostatic Pressing of Superalloys, Superconductors and Composites", John K. Tien et al., MPR 1989, pp. 459-463.
"Hot-Processing of Yttrium Barium Copper Oxide (YBa.sub.2 Cu.sub.3 O.sub.y) Ceramic Powder", Toshihiko Nishida et al., Ser. Sci. Technol. 1988, pp. 37, 96-104.
"Imrpoved Formability of Aluminum-Germanium Near Eutectic Compositions Through the Application of Superplasticity Principles", G. J. Pech, 1977, p. 54.
"Superplasticity of an Yttrium Barium Copper Oxide (YBa.sub.2 Cu.sub.3 O.sub.7-x) Ceramic Compound", O. A. Kaibyshev, et al., 1989, abstract only.
"Superplasticity and Superconductivity", M. C. Mittal et al., Int. Conf. on Mech. Behav. of Mater, 2nd Proc., Boston, Mass. Aug. 16-20, pp. 308-312, abstract only.

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