Stabilized high-field superconductor

Details Stabilized high-field superconductor Stabilized high-field superconductor

1974-05-01

1976-05-25

Lanham, C. W.

Metal working

Method of mechanical manufacture

Electrical device making

174126CP, 174126S, 148 115R, 148127, H01V 1114

Patent

active

039583279

ABSTRACT:
A superconducting compound of the A-15 crystal structure type is obtained in a composite by a high temperature diffusion between a first metallic component and a second metallic component contained in a bronze alloy. Stability is achieved by including in the composite a quantity of high-conductivity normal material. Diffusion of the second metallic component into the normal material with a resultant degradation of conductivity of the normal material is prevented by placing an impervious barrier layer between the bronze alloy and the normal material. In a specific embodiment, the barrier layer takes the form of an annular shell comprising at least two sectors of dissimilar metals, one of which reacts with a component of the bronze alloy to form a layer of said superconducting compound, and the other of which is substantially non-reactive. Thus, a discontinuous superconducting ring is formed on the barrier layer which prevents flux trapping.

REFERENCES:
patent: 3370347 (1968-02-01), Garwin et al.
patent: 3421207 (1969-01-01), Berghout et al.
patent: 3652967 (1972-03-01), Tanaka et al.
patent: 3665595 (1972-05-01), Tanaka et al.
patent: 3728165 (1973-04-01), Howlett
patent: 3836404 (1974-09-01), Strauss

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