SUPER-CONDUCTIVE WIRE BASED ON BRONZE-NB (DOWN ARROW) 3 (DOWN ARROW) SN AND METHOD FOR THE PRODUCTION THEREOF

摘要

1. Superconductive bronze-Nb3 Sn wires containing alloying additives which stabilize the cubic phase in the superconductor, substantially prevent the formation of a tetragonal phase and/or reduce tetragonal deformation (1-c/a), said wires being prepared from a niobium component and a bronze component and being usable at high magnetic field values ( 10 T), comprising a) at least one alloying element from the group of ferromagnetic elements iron and nickel which is alloyed to at least one of the two components, b) at least one alloying element from the group I comprising Li, Sc, U, Ti, Zr, Hf, V, Ta, Mo, Re, Ru, Pd, Zn, Al, Ga, In, Tl, Si, Ge, Sb which is alloyed to at least one of the two components, c) when said alloying elements are alloyed to the niobium component, the total amount of alloyed elements from (a) and (b) in a weight percent range between 0.01 and 7, related to the niobium portion in the wire and/or d) when alloyed to the bronze component, the total amount of alloyed elements from (a) and (b) in a weight percent range between 0.05 and 10, related to the bronze portion in the wire.