Process for producing oxide superconductor

Details Process for producing oxide superconductor Process for producing oxide superconductor

1993-10-29

1995-10-17

Bonner, C. M.

Superconductor technology: apparatus, material, process

Processes of producing or treating high temperature...

With melting

505430, 505725, C04B 35505, C04B 3545

Patent

active

054591244

ABSTRACT:
A process for producing an oxide superconductor, comprising putting a formed body of raw material powders for forming an oxide superconductor on silver or silver oxide within a pan which does not melt at the melting point of silver, heating the pan to a temperature higher than the melting point of silver to bring the formed body to a semi-molten state with the formed body being floated on molten silver, cooling the pan and taking the formed body out of the re-solidified silver. This process enables a large bulk material having a diameter of 10 cm or more to be produced without occurrence of cracking.

REFERENCES:
patent: 4956338 (1990-09-01), Rapp
patent: 5057487 (1991-10-01), Parker
patent: 5089468 (1992-02-01), Yoshida
patent: 5151407 (1992-09-01), Provenzano
Database WPI, Derwent Publications Ltd. London, Week 9122 AN 91-161045 Apr. 23, 1991.
Database WPI, Derwent Publications Ltd., London, Week 9144 AN 91-321516 Sep. 20, 1991.
Patent Abstracts of Japan vol. 15 No. 488 for JP 3215342.
Patent Abstracts of Japan, vol. 17, No. 257, for JP 5002933 Aug. 1, 1993.
Richardson, "Aluminium Cladding of High Temperature Superconductor . . . " Appl. Phys. Lett., 52(23), Dec. 5, 1988, pp. 2342-2343.
Tien, "Hot Isostatic Pressing (HIP) For The Densification . . . " MRS: High Temp. Superconductors II, Apr., 1988, pp. 73-76.

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