EFFECTS OF INDIUM ADDITION ON THE PROPERTIES OF INTERNAL TIN DIFFUSION PROCESSED Nb3Sn WIRES.

Abstract

Nb//3Sn conductor is expected promisingly for high field magnet applications. Recent designs of fusion reactors call for magnets at 12T or higher. During the past several years, there has been much interest in the improvement of critical current density, Jc, of bronze processed Nb//3Sn conductor at high fields by additions of third elements. This paper describes metallurgical observations and effects on superconducting properties of Nb//3Sn wires alloyed with In.