The Furukawa Electric Co., Ltd.

Inter-university Research Institute Corporation National Institutes of Natural Sciences

Furukawa-sky Aluminum Corporation

Uacj Corporation

Sunstar Giken Kabushiki Kaisha

Toshiya Okada

Masahiro Sugimoto

Hirokazu Tsubouchi

Hitoshi Shimizu

Yoji Hirano

Kazuya Takahata

Toshiyuki Mito

Ryo Shoji

Kiichi Yamashita

Toshio Ushiyama

Yasuhiro Okuri

Tomiharu Okita

Toshirou Sakai

Hitoshi Tamura

Takayuki Sotome

Yoki Hirano

A method for producing a composite superconductor includes: a structure forming process of forming a structure including a metal covering member () including at least one to-be-joined portion, a superconductor () arranged inside the metal covering member, and a reinforcing member () arranged between the superconductor () and the at least one to-be-joined portion; and a joining process of joining thereafter the at least one to-be-joined portion.

Composite superconductor, and method for producing composite superconductor

Disclosed is a composite superconductor comprising a superconductor and a metal member. The metal member is composed of one or more members to be joined together in such manner that the one or more members cover the superconductor, and at least one member is made of aluminum or an aluminum alloy.

Composite superconductor

A compressor wheel made of a cast aluminum alloy, wherein the cast aluminum alloy contains Cu 1.4 to 3.2 mass %, Mg 1.0 to 2.0 mass %, Ni 0.5 to 2.0 mass %, Fe 0.5 to 2.0 mass %, and at least one selected from the group consisting of Ti 0.01 to 0.35 mass %, Zr 0.01 to 0.30 mass %, Sc 0.01 to 0.8 mass %, and V 0.01 to 0.5 mass %, with the balance being aluminum and inevitable impurities, with the [(Cu content)+0.5&#xd7;(Mg content)] being 3.8 mass % or less, and with a secondary dendrite arm spacing being 50 &#x3bc;m or less, wherein the cast aluminum alloy is being reinforced by a solution treatment and an aging treatment, and wherein the compressor wheel shows good heat resistant strength, and is for use in a turbocharger.

Cast aluminum alloy compressor wheel for a turbocharger

The present invention is a weld bonding method providing adhesion by both an adhesive and resistance spot welding, and includes application of an adhesive including a thermosetting epoxy resin, a latent curing agent and 1 to 15 vol % of one or more additives selected from the group consisting of conductive metals, metal oxides, metal carbides, metal nitrides, metal borides, and metal silicides, which are in the from of powder having a particle size of 10 .mu.m or less, or in the form of fragments or flakes having a thickness of 0.5 .mu.m or more and a size of 30 .mu.m or less.

Weld bonding method

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Tokyo, Japan

Toshiya Okada