Patent ID: 6836955
Filing Date: 2005-01-04
Classification: C23C,H01L,Y10S,Y10T

Abstract:
1. A process for manufacturing a Nb 3 Sn superconductor comprising the steps of establishing multiple niobium components in a billet of a ductile metal, working the composite billet through a series of reduction steps to form said niobium components into elongated elements, each said element having a thickness on the order of 1 to 25 microns, surrounding said billet with a porous confining layer of an acid resistant metal, immersing said confined billet in an acid to remove said ductile metal from between the niobium elements while the niobium elements remain confined by said porous layer, immersing the confined mass of niobium elements in a liquid metal containing tin to coat said niobium elements with said liquid metal and subsequently reacting said tin with the Nb filaments to form NB 3 Sn, wherein said reaction is accomplished after said filaments are formed into a magnetic coil.