Filamentary Nb3Sn Superconductor Manufactured by the Solid-Liquid Diffusion Method
There are a number of production processes for the fabrication of multifilamentary Nb3Sn superconductors. The most established process is the bronze process which is carried out by reaction of Nb cores and Sn in a bronze matrix.1 As is well known, to obtain a high critical current density throughout the conductor, it is desirable that the Sn content in the bronze matrix be higher than 13 wt%, which is the solubility limit of Sn in Cu. If the Sn concentration is increased over this limit, break down of the wire at drawing by work hardening of the bronze matrix is likely to occur.
KeywordsCritical Current Core Diameter Heat Treatment Time High Critical Current Density Alloy Core
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