PROCESS FOR PRODUCING SUPERCONDUCTING WIRE ROD

摘要

A method for producing a superconducting wire material having a high resistivity layer outside a superconducting material, which is capable of easily forming a homogeneous high resistivity layer, a superconducting wire material and a superconducting device are provided. A raw material of superconducting wire material is coated with a first silver-containing metal to obtain a silver sheath member. This silver sheath member is coated with a non-silver metal free of silver. At least a part of the first silver-containing metal in the member coated with a non-silver metal and the non-silver metal are intermetallically compounded with each other. This intermetallically compounded metal is oxidized to form a high resistivity layer. The member having a high resistivity layer formed thereon is heat-treated to convert the aforementioned raw material to a superconducting material.