Fabrication of New Nb3Sn Wires Through Brass Method

New Nb3Sn wires have been fabricated through internal tin method using gold brass (Cu-15%Zn) matrix with central Sn-Ti core and surrounding Nb rods. Gold brass has excellent mechanical properties which yield multifilamentary wires with better configuration than conventional Cu matrix does. Central Sn and Ti diffuse uniformly to the Nb cores. Nb3Sn filaments with nearly stoichiometric composition have been synthesized. Zn does not penetrate into Nb3Sn layers, and remains uniformly in the matrix. The residual Zn in the matrix may improve the mechanical performance of wires, which is a key issue in Nb3Sn wires. Present process may be named brass method like bronze process widely being used.