Superconductor technology: apparatus – material – process – Processes of producing or treating high temperature... – Process of making wire – tape – cable – coil – or fiber
Patent
1994-04-29
1999-09-14
Gorski, Joseph M.
Superconductor technology: apparatus, material, process
Processes of producing or treating high temperature...
Process of making wire, tape, cable, coil, or fiber
29424, 29599, 427 62, 427226, 505434, H01L 3924
Patent
active
059522704
ABSTRACT:
An oxide superconductor wire is prepared by preparing a length of precursor wire for processing into an oxide superconductor wire and coating the precursor wire with an isolating layer. The coated wire is wound onto a reel in a spiralling manner, such that each turn of the spiral is in alignment with the preceding turn of the spiral along an axis perpendicular to the axis of winding. The wound precursor wire is then heated to form the oxide superconductor. The removable isolating layer is prepared by coating the wire with a solution including a metal oxide and a porosity-inducing component, and heating the coated wire so as to induce porosity and control grain size of the metal oxide so as to render the coating removable. The coating should function to isolate the overlapping turns of the wound wire from neighboring wires, so that not diffusion bonding or adherence between the turns occurs. The coating should also be readily removable because the coating can interfere with subsequent processing of the oxide superconductor wire.
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"Critical Issues in the OPIT Processing of High-J.sub.c BSCCO Superconductors" K.H. Sandhage et al., JPM 43(3), (Mar. 21-25,1991).
Hughson Steven
Thompson Elliott
American Superconductor Corporation
Gorski Joseph M.
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