| 摘要 |
An Sn-based alloy which does not cause deterioration of productivity due to wire disconnection generated during wire drawing by effectively controlling the cooling rate when casting an SnTi alloy, and can efficiently improve critical current density of the superconducting wire by a sub-element and a spacer in a process of heat-treating a superconducting wire, and a method for manufacturing the same are provided. In an Sn-based alloy which is used as a precursor for a Nb3Sn superconducting wire, and into which SnTi particles are dispersed, an Sn-based alloy for the precursor of the Nb3Sn superconducting wire is characterized in that an Sn-based alloy comprising at least one of 0.1 to 6 wt.% of Ti and 0.1 to 6 wt.% of Cu, and the balance of Sn and other inevitable impurities is bonded to a central part of an outer peripheral surface of a copper rod, wherein diameter of the copper rod is 2 to 15% of that of a billet, and an average length of SnTi particles generated within the structure of the Sn-based alloy bonded to the outer peripheral surface of the copper rod is 30 mum or less. |
