Method of producing Pb-stabilized superconductor precursors and

Details Method of producing Pb-stabilized superconductor precursors and Method of producing Pb-stabilized superconductor precursors and

1992-10-30

1995-03-07

Lieberman, Paul

Superconductor technology: apparatus, material, process

Processes of producing or treating high temperature...

Process of making wire, tape, cable, coil, or fiber

505738, 505740, 505433, 505510, 252518, 252521, H01L 3912, H01B 1200

Patent

active

053958217

ABSTRACT:
Metal oxide superconductor powder precursors are prepared in an aerosol pyrolysis process. A solution of the metal cations is introduced into a furnace at 600.degree.-1000.degree. C. for 0.1 to 60 seconds. The process produces micron to submicron size powders without the usual loss of the lead stabilizer. The resulting powders have a narrow particle size distribution, a small grain size, and are readily converted to a superconducting composition upon subsequent heat treatment. The precursors are placed in a metal body deformed to form a wire or tape and heated to form a superconducting article. The fine powders permit a substantial reduction in heat treatment time, thus enabling a continuous processing of the powders into superconducting wire, tape or multifilamentary articles by the powder-in-tube process.

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