| 简介 |
PROBLEM TO BE SOLVED : To provide an insulation coating structure of a superconducting wire rod in which interlayer delamination of the superconducting wire rod can be suppressed, and excellent superconducting characteristics can be maintained.
SOLUTION : A tape-like superconducting wire rod 11 is constituted by forming a superconductive layer 14 of a rare-earth-based oxide superconductor on a substrate 12 with an intermediate layer 13 interposed therebetween, forming stabilization layers 15, 16 on the superconductive layer 14, and then forming an insulation coating layer 17 on the outer periphery thereof. An insulation coating layer 17a at the end of the superconducting wire rod 11 in the width direction has a thickness D thicker than the thickness d of the insulation coating layer 17 in the intermediate part. Preferably, the thickness D of the insulation coating layer 17a is 15-35% thicker than the thickness d of the insulation coating layer 17 in the intermediate part. Furthermore, the thickness D of the insulation coating layer 17a is preferably 15-100 μm.
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