Method of manufacturing for Nb3Sn superconducting wire rod by means of powder method and precursor therefor
摘要
<p>A precursor for producing a Nb 3 Sn superconducting wire rod in which a plurality of composite members each prepared by filling a base powder containing at least Sn in a sheath composed of Nb or a Nb alloy are embedded in a copper matrix part, a copper ratio given as the ratio of the cross-sectional area of a copper part to the cross-sectional area of a non-copper part (cross-sectional area of copper part/cross-sectional area of non-copper part) in a cross-section in a direction perpendicular to the longitudinal direction is in the range of 0.3 to 1.8.</p>
