Manufacture of a3b superconductors with barrier layer system...

Details Manufacture of a3b superconductors with barrier layer system... Manufacture of a3b superconductors with barrier layer system...

H - Electricity

01

L

26/112.1

H01L 21/18 (2006.01) H01L 39/24 (2006.01)

Patent

CA 1045795

ABSTRACT OF THE DISCLOSURE A superconductor of the general formula A3B, e.g. Nb3Sn, is manufactured by mechanical fabrication of A filaments in a bronze containing B followed by heat treatment to form A3B by solid state reaction from B diffusing through the bronze without melting of the bronze. A pure metal for stabilisation is mechanically fabricated together with the other components and protected from diffusion thereinto of any of the other components by a barrier layer of A metal. Superconductor formation on the harrier layer of A metal during the heat treatment is avoided or reduced by surface treatment or surface coating which inhibits A3 reaction between A and B at the barrier.

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