PROCESS FOR PRODUCING SUPERCONDUCTIVE CERAMIC SINTER

WIPO Patent Application WO/1989/002880

A1

A process for producing superconductive ceramic sinter according to the invention comprises compounding a first powder of oxide(s) containing rare earth metal element(s), a second powder of oxide(s) or carbonate(s) of alkaline earth metal element(s), a third powder of copper oxide, and a fourth powder of metal fluoride in predetermined proportions, baking the resulting mixed powder to produce superconductive ceramic, molding a powder of said ceramic, and sintering the molding. The presence of the metal fluoride in said sinter in a predetermined amount serves to improve the toughness and density of the superconductive ceramic and facilitate the working of the ceramic.

JPH0781933	SUPERCONDUCTOR AND PRODUCTION THEREOF
JP2865174	[Title of the Invention] Cuprate superconductor
JPS5337520	ION EXCHANGE METHOD BY LEACHING IN AIR FOR TREATING NICKELL COPPER MATTE CONTAINING IRON

TAKESHITA TAKUO (JP)
HAGINO SADAAKI (JP)
SAKURAI TAKESHI (JP)
SUGIHARA TADASHI (JP)

PCT/JP1988/000956

April 06, 1989

September 21, 1988

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MITSUBISHI METAL CORP (JP)

C01G3/00; C04B35/45; H01L39/24; (IPC1-7): C04B35/00; C01G3/00; H01B12/00

JPS63256518A

1988-10-24

Physical Review Letters, Vol. 58, No. 20, (1987), S. R. OVSHINSKY, et al (Superconductivity at 155K) p. 2579-2581
XVIII International Conference on Low Temperature Physics Conference Booklet (1987), T. S. RADHAKRISHNAN, et al (Superconductivity Studies on Pure and F-Containing La-M-Cu-O(M=Sr, Ba, Cd) System) p. 245
Physical Review Letters, vol. 58, No. 9, (1987), C. W. CHU, et al (Superconductivity af 93K in a New Mixed-Phase Y-Ba-Cu-O compound System at Ambient Pressure) p. 908-910
See also references of EP 0354963A4

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