| 摘要 |
PROBLEM TO BE SOLVED: To provide a superconducting wire rod manufacturing technology which, even if a joint area is smaller than that of the conventional one, can obtain a critical current value Ic equal to that of a superconducting wire rod before bonding.SOLUTION: A superconducting wire rod manufacturing method which bonds superconducting wire rods having an oxide superconducting film to each other using their ends as joint surfaces to produce a lengthened superconducting wire rod comprises: a precursor forming step of forming a precursor of an oxide superconducting material on the oxide superconducting film of the joint surface; an ultrasonic bonding step of superposing the joint surfaces, formed with the precursor, on each other and bonding them by ultrasonic bonding; and a heat bonding step of heating the precursor on the joint surfaces bonded together to generate a crystal of the oxide superconducting material on the joint surfaces, thereby forming a superconducting layer of the oxide superconducting material as a bonding layer to bond the joint surfaces to each other.SELECTED DRAWING: None |
