Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Chuo Kenkyusho

Hideo Aihara

Masazumi Onishi

Kenichi Suzuki

Fumio Shimizu

Yasuyuki Suzuki

Masahiko Mitsubayashi

Takashi Asano

Mineo Ogino

Kazuyoshi Ogawa

Masaki Kajino

Hiromichi Nakata

Masashi Murate

Masayoshi Yokoi

Yoshifumi Kaji

Masazumu Onishi

Masahi Murate

The gas separator is provided with a substrate portion having a predetermined concave-convex shape, an underlying coating layer formed on the substrate portion, a first coating layer for coating the substrate portion and the underlying coating layer, and a second coating layer formed thereon. The second coating layer is formed from a carbon material, and is sufficiently conductive. Moreover, the second coating layer protects the underlying layer. The first coating layer is formed from a noble metal. Therefore, the first coating layer coated with the second coating layer exhibits extremely high corrosion resistance. The underlying coating layer and the substrate portion are coated with the first and second coating layers, so that the progress in corrosion can be sufficiently prevented. Thus, excellent overall corrosion resistance of the separator can be realized.

Fuel cell gas separator, manufacturing method thereof, and fuel cell

A method and apparatus of manufacturing an endless metallic belt adjusts a circumferential length of the belt by subjecting the endless metallic belt to a shot peening treatment. For example, by measuring the circumferential length prior to the shot peening treatment and determining the condition of the shot peening treatment on the basis of the measured length, and/or by measuring the circumferential length during the shot peening treatment and terminating the shot peening treatment on the basis of the measured length.

Method and apparatus for manufacturing endless metallic belt, and the endless metallic belt manufactured by the method

An endless metallic belt has at its outer peripheral surface a layer provided with a compressive residual stress by shot peening, and also has at its inner peripheral surface a layer provided with a compressive residual stress by shot peening. In a method for manufacturing the endless metallic belt, both outer and inner peripheral surfaces of the endless metallic belt are subjected to shot peening, wherein the inner peripheral surface is shot peened prior to the outer peripheral surface. The method produces an endless metallic belt having its fatigue strength improved without suffering any significant deformation.

Endless metallic belt and manufacturing method therefor

A brightening chemical polishing solution for a hardened steel article (e.g., a carburized and quenched gear) comprises hydrofluoric acid having a molar concentration of from 0.2 to 2 mol/l, hydrogen peroxide having a molar concentration of from 0.4 to 4 mol/l, and water, a molar ratio of the hydrofluoric acid to the hydrogen peroxide being from 1:1.5 to 1:2.8. The steel article is quench hardened and is chemically polished in the solution. A shot-peening is additionally performed, prior to the polishing.

Brightening chemical polishing solution for hardened steel article and

Brightening chemical polishing solution for hardened steel article

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Toyota, Japan

Hideo Aihara