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US 2009/0156437 A1Published application
Double-layer lubrication coating composition, double-layer lubrication coating and piston having same coating
AssigneeHonda Motor Co., Ltd.
InventorsYoshimi KURODA, Kentaro SUGIMURA
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Abstract
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.
Claims3
A double-layer lubrication coating composition comprising:
- an upper-layer coating composition comprising:
- 50 to 70 wt % of a bonding resin comprising at least one of an epoxy resin and a polyamide-imide resin;
- 5 to 20 wt % of a solid lubricant comprising a boron nitride;
- and
- 15 to 30 wt % of hard particles comprising at least one of silicone nitride and alumina;
- and
- a lower-layer coating composition comprising:
- 50 to 70 wt % of a bonding resin comprising at least one of an epoxy resin and a polyamide-imide resin;
- a solid lubricant comprising:
- 15 to 30 wt % of polytetrafluoroethylene;
- and
- a molybdenum disulfide and graphite, total amount of the molybdenum disulfide and the graphite being 5 to 20 wt %, and an amount of graphite being 1 to 10 wt %.
9 more elements
Dependencies are inferred from the claim text.