Superconductive joint for multifilament superconducting and method of forming
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United States of America Patent
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Jan 23, 1990
Grant Date -
N/A
app pub date -
Dec 23, 1987
filing date -
Dec 23, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The ends of two composite superconductors (10a and 10b) having many filaments (12) are joined together to form a joint that is durable, superconducting under proper conditions, and has good shunting capacity. The filaments (12) are exposed by removal of the normal conducting matrices (14a and 14b) from the ends of the composite conductors (10a and 10b) to be joined. The superconductive filaments (12) from each of the composite conductors are inserted together into a sleeve (16) of bimetal construction. The inner surface (18) of the sleeve is made of superconducting material and is metallically bonded to the outer surface (20) of the sleeve which is made of normal conducting material. The bimetal sleeve (16) abuts the matrices (14a and 14b) of the composite conductors (10a and 10b) on one end, and the filaments (12) extend beyond the opposing end of the bimetal sleeve (16). The bimetal sleeve (16) is crimped to form a cold weld joint, and then severed in the region of the crimp to form another cold weld joint. A substantial amount of solder (24) is then applied to cover the remaining bimetal sleeve (16), the neighboring matrices (14a and 14b), and the region of the crimp.
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