Siemens Aktiengesellschaft

Sigrun Frohmader

Gunther Ziegler

Erwin Schmidt

Manfred Wilhelm

Peter Lanig

A method for the manufacture of a superconductor with a superconductive intermetallic compound consisting of at least two chemical elements in which a ductile structural part made of at least one element of the compound is brought into contact with a second structural part which contains a ductile carrier metal for the remaining elements of the compound after which the remaining elements of the compound are admitted to the second ductile structural part through a chemical transport reaction at elevated temperature, the compound being formed by a reaction of its remaining elements, diffusing through the second structural part, with the first structural part.

Method for the manufacture of a superconductor with a superconductive

A method for the manufacture of a superconductor with a superconductive intermetallic compound consisting of at least two chemical elements in which one ductile structural part made of at least one element of the compound is brought into contact with a second structural part which contains a ductile carrier metal for the remaining elements of the compound whereafter the remaining elements of the compound are supplied to the second ductile structural part through decomposition of their alkyl compounds at elevated temperature and the compound is formed through a heat treatment. The superconductors produced in this manner are particularly well suited for superconducting magnet coils.

A method for stabilizing a superconductor of the type having at least one core which is entirely or partly of an intermetallic superconductive compound and which is provided with a sheath of an alloy which contains an electrically normal-conducting metal and an element of the compound, in which the element of the compound contained in the sheath is removed from the sheath, at least partially, by a chemical transport reaction to obtain electrical stabilization of the superconductor.

Method for stabilizing a superconductor

A method for the manufacture of a superconductor having a superconductive intermetallic compound consisting of at least two elements in which at least one core containing at least one ductile element of the compound is surrounded by a jacket of ductile matrix material, after which the structure so obtained is subjected to a cross section-reducing process and the remaining elements of the compound subsequently applied to the jacket of matrix material followed by a heat treatment performed in a manner such that the compound is formed through a reaction of the remaining elements with the core after diffusion through the matrix material. The remaining elements are applied as a sheath of an alloy containing these elements along with a carrier metal which is deposited on the jacket of the matrix material after the last cross section-reducing process step and before heat treatment for forming the compound.

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Erlangen, Germany

Sigrun Frohmader