MANUFACTURING PROCESS OF INTERMETALLIC COMPOUND Nb_3Sn BY MELT METALLURGICAL PROCEDURE

摘要

The invention relates to a manufacturing process of an intermetallic compound Nb_3Sn by a melt metallurgical procedure. The manufacturing process comprises a step of pressing Nb particles and Sn particles to form a start electrode to remelt the pressed start electrode in a vacuum in an electric arc to acquire a first formed body. Alternatively, the manufacturing process comprises a step of remelting an Nb start electrode in a vacuum in an electric arc to introduce Sn particles into molten Nb formed during the remelting to acquire a first formed body. The molar ratio of Nb and Sn is selected appropriately for the acquired first formed body to contain at least 50 wt% of the intermetallic compound Nb_3Sn as the A15 phase as well as free Nb and/or Sn and inevitable impurities, if applicable.;COPYRIGHT KIPO 2019