Sumitomo Electric Industries, Limited

Toyo Kohan Co., Ltd.

Kazuya Ohmastu

Hajime Ota

Takashi Yamaguchi

Hironao Okayama

Kotaro Ohki

Teppei Kurokawa

Yoshihiko Isobe

Kouji Nanbu

Takashi Koshiro

Akira Kaneko

A metal laminated substrate for an oxide superconducting wire is produced by removing, in a state where a copper foil to which rolling is applied at a draft of 90% or more is held at a temperature below a recrystallization temperature, an absorbed material on a surface of the copper foil by applying sputter etching to the surface of the copper foil; removing an absorbed material on a surface of a nonmagnetic metal sheet by applying sputter etching to the surface of the nonmagnetic metal sheet; bonding the copper foil and the metal sheet to each other by reduction rolls at an applied pressure of 300 MPa to 1500 MPa; orienting crystals of the copper by heating a laminated body obtained by bonding at a crystal orientation temperature of copper or above; and forming a protective layer on a copper-side surface of the laminated body by coating.

Metal laminated substrate for use as an oxide superconducting wire material, and manufacturing method therefor

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Osaka, Japan

Kazuya Ohmastu