Vacuumschmelze Gmbh

Engelbert Springer

Hans Hillmann

A stabilized super-conductor of the type containing a super-conductive region consisting of an intermetallic compound containing at least two elements, such as Nb.sub.3 Sn, and a normally-conductive region containing a material which is normally conductive during operational temperatures of the super-conductive region, such as Cu, with a diffusion-inhibiting layer, such as at least partially composed of Ta, positioned between the super-conductive and the normally-conductive regions is produced by providing a structure composed of a region of normally-conductive material and a region of super-conductive material, arranging a plurality of rod-shaped segments, at least some of which are composed of a diffusion-inhibiting material, between the normally conductive and the super-conductive regions and deforming the resultant structure one or more times, with intermediate annealing so as to attain a conductor having a desired reduced cross-section while causing the rod segments to combine with one another to form a diffusion-inhibiting layer.

Stabilized super-conductor having a diffusion-inhibiting layer therein

In a superconducting composite conductor consisting of several strands with a superconductive intermetallic compound of at least two elements, and at least one strand of a thermally and electrically highly conductive stabilizing metal which is normally conducting at the operating temperature of the superconducting composite conductor, wherein the strands with the superconductive compound each contain a core of at least one higher melting point element of the compound, having, at least on its surface, a layer of the compound, embedded in an alloy of at least one lower melting point element of the compound and a carrier metal in the form of a cable, stranded wire or flat cable, the strand of the stabilizing metal is joined to the adjacent strands containing the superconductive compound by diffusion of at least one lower melting point element of the compound and contains at least one zone, which zone extends along the strand and is enclosed by a diffusion inhibiting layer.

Growing community of inventors

Rodenbach, Germany

Engelbert Springer