The Furukawa Electric Co., Ltd.

Chubu Electric Power Company, Inc.

Akinobu Nakai

Hisaki Sakamoto

Tomonori Watanabe

Shigeo Nagaya

Toshiaki Amano

Naoji Kashima

Ryusuke Nakasaki

Satoshi Yamano

A connection structure of high-temperature superconducting wires includes first and second superconducting wires which are high-temperature superconducting wires respectively having a base material consisting of metal or alloy, and an oxide superconducting layer formed on the base material. A joint portion containing a superconducting connection portion between the first and second superconducting wires joins the first and second superconducting wires in a positional relationship facing the surfaces of first and second superconducting layers which are the oxide superconducting layers of each of the first and second superconducting wires, are opposed to each other. In a base material of at least one superconducting wire among the first and second superconducting wires, a first portion constituting the joint portion is thicker than a second portion not constitute the joint portion in the same base material.

Connection structure of high temperature superconducting wires, method for forming same, high temperature superconducting wire, and high temperature superconducting coil

Provided is a connection structure for superconductor wires, in which two superconductor wires include respective oxide superconducting conductor layers each formed on one surface of a base material. The oxide superconducting conductor layers are conjoined with each other while facing each other at a connected end of each of the two superconductor wires. An embedment material for reinforcement is provided from one of the two superconductor wires to the other one of the two superconductor wires in a thickness direction of the two superconductor wires at the connected end of each of the two superconductor wires.

Connection structure for superconductor wires

A connection structure of superconducting wires includes a plurality of superconducting wires are overlapped and connected with each other, each of the plurality of superconducting wires including a substrate and a superconducting layer that are laminated. A non-superconductor is provided at a part of a surface of the superconducting layer of at least one of the superconducting wires and protrudes from the surface.

Connection structure of superconducting wires

A method for manufacturing a superconducting wire material in which the superconducting current is not saturated even when a superconducting layer is made into a thick film, and a superconducting wire material. In the method a superconducting layer is formed on a metal substrate interposed by an intermediate layer, the method including heating the metal substrate up to the film-formation temperature of a superconducting film for forming the superconducting layer, forming a superconducting film having a film thickness of at least 10 nm and no more than 200 nm on the intermediate layer, and reducing the metal substrate temperature to a level below the film-formation temperature of the superconducting film, and the superconducting film-formation, including the heating, the film-formation, and the cooling, are performed a plurality of times.

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Tokyo, Japan

Akinobu Nakai