Production of superconducting wires or strips by deforming or heat treating a composite comprising a tube containing a powdered superconducting magnesium boride or its powdered pre-product and a normal conducting powder

摘要

Production of superconducting wires or strips by deforming or heat treating a composite consisting of a tube containing a powdered superconducting MgB2 compound or its powdered pre-product and a normal conducting powder to form a superconducting wire or strip. The powdered pre-product is inserted as a mechanically alloyed powder into the tube. Preferred Features: The MgB2 compound or its pre-product has a crystal lattice made from Al, Ag, Cu, Au, Sc, Y, Dy, Gd, Hf, Ti, Zr, Ta, V, Nb, Cr, Mo, Mn, Os, Ru, C, Si, N and/or O. The tube is made from Cu, Ag, Ta, Nb, Mo, W, Mg or their alloys.