US 5,266,416 A · Aluminum-stabilized superconducting wire

Abstract

An aluminum-stabilized superconducting wire includes a superconducting wire member obtained by burying a superconducting filament in a copper matrix and an aluminum stabilizing member covered in an outer surface of the superconducting wire member, and the aluminum stabilizing member is constituted by an aluminum alloy having a 0.2 % proof resistivity of 4 kg/mm.sup.2 or more at a very low temperature and a residual resistance ratio of 250 or more. It is preferable that the aluminum alloy contains at least one element selected from 50 to 1,000 ppm of Zn, 50 to 150 ppm of Si, 50 to 400 ppm of Ag, 50 to 300 ppm of Cu, and 30 to 2,000 ppm of Ce, and that a balance is constituted by Al and an inevitable impurity.

Claims14

Dependent claims

An aluminum-stabilized superconducting wire comprising:

a superconducting wire member comprising a superconducting filament buried in a copper matrix;
and
an aluminum stabilizing member covering an outer surface of said superconducting wire,
said aluminum stabilizing member comprising an aluminum alloy having a 0.2% proof strength of not less than 4 kg/mm.sup.2 at a very low temperature and a residual resistance ratio of not less than 250,
the aluminum alloy containing at least one element selected from the group consisting of 50 to 1,000 ppm of Zn, 50 to 150 ppm of Si, 50 to 400 ppm of Ag, 50 to 300 ppm of Cu, and 30 to 2,000 ppm of Ce, and the balance being Al and inevitable impurities,
said aluminum stabilizing member being obtained by cold working the aluminum alloy with an area reduction rate of 3 to 60%.

3 more elements

Dependencies are inferred from the claim text.

Aluminum-stabilized superconducting wire

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Aluminum-stabilized superconducting wire

Life of this patent

Abstract

Claims14