Method for producing Nb.sub.3 Sn superconductors

Details Method for producing Nb.sub.3 Sn superconductors Method for producing Nb.sub.3 Sn superconductors

1980-11-10

1982-07-27

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148133, H01L 3900, C22C 2702

Patent

active

043415725

ABSTRACT:
In a method for producing a Nb.sub.3 Sn superconductor which comprises drawing a composite having a core of a Nb-Hf alloy containing 0.1 to 30 atomic % of Hf and a sheath containing Cu and Sn, and heat-treating the composite to form a Nb.sub.3 Sn layer between the core and the sheath; the improvement wherein the sheath is formed of pure Cu, a Cu-Sn alloy containing not more than 6 atomic % of Sn, a Cu-Ga alloy containing not more than 20 atomic % of Ga, a Cu-Al alloy containing not more than 20 atomic % of Al, a Cu-Ga-Sn alloy containing not more than 6 atomic % of Sn and not more than 20 atomic % of Ga, or a Cu-Al-Sn alloy containing not more than 6 atomic % of Sn and not more than 20 atomic % of Al; and after the drawing, a Sn film is coated on the surface of the sheath, and then the product having a Sn film coated thereon is heat-treated.

REFERENCES:
patent: 3954572 (1976-05-01), Ziegler et al.
patent: 4084989 (1978-04-01), Meyer
patent: 4224087 (1980-09-01), Tachikawa et al.

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