Superconductive connecting device for the end pieces of two superconductors and method for the production thereof

摘要

A superconductive connecting device of at least one embodiment is used to contact the end pieces of two superconductors, each of which includes at least one conductor lead that is made of a superconductive MgB2 material and embedded in a matrix made of a normally conductive material, the conductor lead being directly sheathed with a barrier material. In a connecting region, the conductor leads of the end pieces, which are at least partially stripped of the matrix material and the barrier material, are arranged inside a sleeve or bushing, and a magnesium diboride (MgB2) material is additionally present as a superconductive contacting material which is located at least in some partial regions between the conductor leads. For establishing the connection, the cross-section of the sleeve or bushing filled in this way is reduced.

主权项

1. A superconductive connecting device for end pieces of at least two superconductors, each of the at least two superconductors including a matrix made of normally conductive material and at least one conductor lead made of superconductive MgB2 (magnesium diboride) embedded therein, the superconductive connecting device comprising:
a connecting region in a sleeve or bushing, wherein the at least one conductor lead of each of the at least two superconductors is arranged in the connecting region and end pieces of each of the at least two superconductors is completely stripped of matrix material, wherein MgB2 or its base materials is present as a superconductive contacting material which is located at least in partial regions between the conductor leads, wherein the conductor leads are directly sheathed in each case with a barrier layer made of a barrier material different from the matrix material, and wherein at least one end-face connecting region is kept free of the barrier material which surrounds the conductor leads and the conductor leads are directly sheathed with barrier material in at least part of length sections where the conductor leads are stripped of the matrix material.