| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a superconductive cable in which the critical current density can be improved by carrying out sufficiently degassing in the metallic pipe. SOLUTION: The manufacturing method comprises a process of filling a raw material powder made of an oxide superconductor or a raw material powder made of a precursor that becomes an oxide superconductor by heat treatment in a metallic pipe, a process of heating the metallic pipe filled with the above raw material powder at 400°C or more and 800°C or less, a process depressurizing the inside of the heated metallic pipe to 100 Pa or less, a process of sealing the opening part at the end part of the metallic pipe in the depressurized state, and a process of drawing the metallic pipe filled with the raw material powder. The poured density of the raw material powder is 10% or more and 40% or less. COPYRIGHT: (C)2004,JPO |
