Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-05-25
1992-01-07
Kunemund, Robert
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505729, 156600, 156624, C30B 1104
Patent
active
050792202
ABSTRACT:
Large oriented crystals greater than one millimeter in length of high T.sub.c superconducting compounds are grown by mixing starting materials in the correct proportions to make the superconducting compound, forming a mixture. The CO.sub.2 is removed from the mixture and the ternary oxide of the compound is formed from the mixture. Next, the mixture is formed into a self-supporting green body and sintered at a sintering temperature at which the top of the self-supporting green body is molten and the bottom surface is solid. The self-supporting green body is held at the sintering temperature for a time, forming a sintered body. Next, the sintered body is cooled so that crystals form. After this step, the crystals can be further processed to increase their superconducting properties. Finally, the crystals are removed and processed for use.
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Das Badri N.
Lechter William L.
Toth Louis E.
Wolf Stuart A.
Edelberg Barry A.
Kunemund Robert
McDonnell Thomas E.
The United States of America as represented by the Secretary of
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