WIRE FOR NB3X SUPERCONDUCTOR AND METHOD FOR ITS MANUFACTURING Russian patent published in 1998 - IPC

FIELD: superconductors. SUBSTANCE: device has stabilizing matrix, which includes superconducting wires, each of which is made from copper rod, filament which consists of two tapes, first of which is made from pure niobium or its alloy; second tape is made from metal or alloy having atoms of X which interact with niobium providing superconducting composition. In addition layers which are formed by niobium tape or its alloy are located between copper rod and filament and touching surfaces of two tapes and niobium tape and copper rod article is zigzag-shaped in order to increase contact area. Corresponding method involves joining tape made from pure niobium or niobium alloy to second tape which is made from metal or alloy having atoms of X which interact with niobium providing superconducting composition; coiling said article over copper rod, processing wire in order to decrease its section area. Prior to joining tape made from pure niobium or niobium alloy, it is processed by temperature for sufficient period which allows restructuring of crystal structure and niobium crystal lattice disordering. When two tapes are joined, ends of tape made from pure niobium or niobium alloy are left free from second tape in order to provide diffusion barrier layers. EFFECT: increased critical current density. 5 cl, 13 dwg, 1 tbl, 6 ex