CONDUCTOR FOR SUPERCONDUCTING WIRE AND CONDUCTOR FOR MULTICORE SUPERCONDUCTING WIRE Russian patent published in 1998 - IPC

FIELD: superconductor engineering. SUBSTANCE: conductor for superconducting wire made of alloy Nb₃X is built up of conductor 14 proper prepared by applying and winding first sheet 107 made of pure niobium or niobium alloy and second sheet 108 made of atoms of metal X interacting with niobium for producing compound sustaining superconductance or alloy X, alloy of reinforcing material 111 around conductor 14, and near-surface diffusion layer 110 placed between external surface of conductor 14 and internal surface of reinforcing material layer 111 to prevent diffusion of metal X atoms into reinforcing material layer 111; near-surface diffusion layer 110 is obtained from metal material possessing higher tensile strength than same parameter of first sheet 107. Wire made of this conductor or multicore wire of same conductor is subjected to heat treatment to raise critical current density and residual resistance of reinforcing material. EFFECT: improved quality of superconducting wire and enlarged interlayer contacting surface area. 20 cl, 11 dwg, 6 tbl