Honda Motor Co., Ltd.

Daido Metal Company Ltd.

Yoshimi Kuroda

Takuya Tanaka

Kentaro Sugimura

Kota Tokubi

Teruo Abe

Koue Ohkawa

Kenji Suto

Tomonori Saito

Hideo Kawabata

Isei Naka

Tomomi Okumura

Keiichiro Kume

A multilayer lubrication coating film is formed on the outer surface of an object to be coated. The multilayer lubrication coating film comprises a lower-layer coating film formed on an outer surface of the object to be coated, and an upper-layer coating film formed on a surface of the lower-layer coating film. The lower-layer coating film has a higher Vickers hardness than the Vickers hardness of the object to be coated.

Multilayer lubrication coating film and internal combustion engine piston using the coating film

A double-layer lubrication coating composition is made up of an upper-layer coating composition and a lower-layer coating composition. The upper-layer coating composition is made up of 50 to 70 wt % of an epoxy resin or a polyamide-imide resin, 5 to 20 wt % of boron nitride, and 15 to 30 wt % of silicone nitride or alumina. The lower-layer coating composition is made up of 50 to 70 wt % of an epoxy resin or a polyamide-imide resin, 15 to 30 wt % of polytetrafluoroethylene and 5 to 20 wt % of molybdenum disulfide and may include graphite as required.

Double-layer lubrication coating composition, double-layer lubrication coating and piston having same coating

The present invention provides a plain bearing having improved bearing properties, especially anti-seizure property, initial conformability and cavitation resistance. According to the present invention, a sliding layer is provided on a surface of a bearing alloy layer comprising of a copper-based or aluminum-based alloy, thereby the sliding layer is so structured that, to a polyamide-imide resin of a main constituent, a polyamide resin is added and mixed under a high shear force to form a polymer-alloyed resin binder, in which 1 to 75% by mass of a solid lubricant is dispersed. The sliding layer can have high toughness and strength, as well as improved anti-seizure property, initial conformability and cavitation resistance.

Composition for dry lubricant film and plain bearing with sliding layer using the same

An object of the present invention is to provide a plain bearing which can be further improved in bearing capability, in particular, anti-seizure property, initial conformability and cavitation resistance. In the present invention, a sliding layeris formed on the surface of a bearing alloy layerformed of a copper-based or aluminum-based alloy, and the sliding layercomprises a resin binder obtained by applying a strong shearing force to a composition comprising a polybenzimidazole resin as main constituent and at least one member selected from the group consisting of a polyamide-imide resin, a polyamide resin and an epoxy resin, to make the composition into a polymer alloy, and 25 to 75 mass % of a solid lubricant. Owing to such a constitution, toughness and strength are imparted to the sliding layerand the anti-seizure property, initial conformability and cavitation resistance can also be improved.

Plain bearing

Growing community of inventors

Inabe, Japan

Yoshimi Kuroda