Patent ID: 9697930
Date: 2017-07-04
CPC Classifications: H01B,H01L

Claim:
1. An oxide superconductor wire comprising: a tape-shaped oxide superconductor laminate including a metal tape-shaped substrate that has a substrate front surface and a substrate back surface, an intermediate layer that is provided on the substrate front surface, an oxide superconductor layer that is provided on the intermediate layer, and a protective layer that has a protective front surface and is provided on the oxide superconductor layer; and a coating member that is formed of a metal tape and a low melting point metal layer, wherein the metal tape has a wider width than that of the oxide superconductor laminate and covers the protective front surface, both side surfaces of the oxide superconductor laminate, and both end portions of the substrate back surface in a width direction thereof, both end portions of the metal tape in a width direction thereof are provided to cover both the end portions of the substrate back surface, and a recessed portion is defined by the both end portions of the metal tape and the substrate back surface, the low melting point metal layer fills gaps between the oxide superconductor laminate and the metal tape that is provided so as to surround the oxide superconductor laminate to join the metal tape and the oxide superconductor laminate to each other, the low melting point metal layer covers tip portions of both end portions of the metal tape in the width direction, and a part of the low melting point metal layer extends from the tip portions of the both end portions of the metal tape toward the recessed portion, and a total width of both end portions of the metal tape covering the end portions of the substrate back surface is 1.5 mm or greater.