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Title:
SUPERCONDUCTING THIN-FILM WIRE MATERIAL AND PRODUCTION METHOD FOR SUPERCONDUCTING THIN-FILM WIRE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/176169
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a superconducting thin-film wire material that has well-balanced good critical current density in a 20-K magnetic field and superior mechanical characteristics, without involving complication of a production device and an increase in production processes. The superconducting thin-film wire material according to the present invention comprises a MgB2 thin film formed on a metal substrate, and is characterized in that the MgB2 thin film has a two-layer structure including a first MgB2 thin film formed on the metal substrate and a second MgB2 thin film layered on the first MgB2 thin film, and the content rate of B in the first MgB2 thin film is lower than that in the second MgB2 thin film.

Inventors:
IWANAKA Takumu (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
KUSUNOKI Toshiaki (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
Application Number:
JP2018/042125
Publication Date:
September 19, 2019
Filing Date:
November 14, 2018
Export Citation:
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Assignee:
HITACHI, LTD. (6-6 Marunouchi 1-chome, Chiyoda-ku Tokyo, 80, 〒1008280, JP)
International Classes:
H01B12/06; C01B35/12; C01G1/00; H01B13/00; H01F6/06
Domestic Patent References:
WO2016084513A12016-06-02
Foreign References:
JP2003323822A2003-11-14
Attorney, Agent or Firm:
POLAIRE I.P.C. (13-11, Nihonbashikayabacho 2-chome Chuo-k, Tokyo 25, 〒1030025, JP)
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