Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1990-09-21
1992-08-18
Beck, Shrive
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505704, 427 62, 427435, 427117, 427118, B05D 512
Patent
active
051400065
ABSTRACT:
A method for heat processing a superconductor wire which has a protective silver cladding includes the steps of attaching the coated wire to a spool and then rotating the spool to wind the wire around the spool in juxtaposed coils. As the wire is being wound around the spool, the portions of the wire which are not yet coiled are drawn through a container which holds a paint that contains a silver diffusion inhibiting material. The diffusion inhibiting material is consequently deposited onto the silver cladding of the superconductor wire, and the coiled wire is subsequently placed in a furnace. The wire is heat processed in the furnace as appropriate for the particular type of superconductor material. The diffusion inhibitor material prevents diffusion of silver during the heat processing between portions of the wire which contact each other.
REFERENCES:
patent: 4929596 (1990-05-01), Meyer et al.
patent: 4959346 (1990-09-01), Mogro-Campero et al.
Yamada et al., "Bulk and Wire Type Y-Ba-Cu Oxide Superconductor", Jpn. J. Appl. Phys. vol. 26 (1987) Supplement 26-3.
Jin et al., "High Tc Superconductors-composite wire fabrication", Appl. Phys. Lett. 51(3) Jul. 1987 pp. 203-204.
Onuma et al., "Y-Ba-Cu-O Thin Films Formed on Alumina Ceramic Substrates Coated with Yttria Stabilized zirconia Layer", Jpn. J. Appl. Phys. 27(7) Jul. 1988 L351-352.
Beck Shrive
General Atomics
King Roy V.
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