Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1988-02-12
1992-09-22
Bell, Mark L.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505738, 505780, 505785, H01L 3912, C01F 1700
Patent
active
051496828
ABSTRACT:
Superior homogeneity in ceramic materials is achieved by reacting certain soluble metal salts with quaternary ammonium carbonates to form co-precipitated metal carbonates. The precipitate can be recovered and processed to make superconductors. For example, a solution of nitrates of yttrium, barium, and copper are treated with a solution of tetraethyl ammonium carbonate to form co-precipitated carbonates of Y, Ba, Cu. The precipitate is recovered and calcined to form a superconducting material.
REFERENCES:
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Pan Wie H.
Rudesill John
Spencer Nicholas D.
Bell Mark L.
Capella Steven
Gallo Chris
W. R. Grace & Co. - Conn.
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