PROCESS FOR PRODUCING Ge-ADDED Nb sb 3 /sb Al BASE SUPERCONDUCTING WIRE MATERIAL

摘要

A composite multi-core wire rod in which a plurality of Al alloy wires containing 15 at% to 40 at% of Ge are arranged in Nb matrix at a core diameter of 2 µm to 20 µm is subjected to heating for at least five hours at a temperature ranging from 1300°C to 1600°C; and additionally heating at a temperature ranging from 650°C to 900°C.