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发明公开
CN101839188A 内燃机活塞和活塞表面处理方法 无效 - 驳回 复审申请

内燃机活塞和活塞表面处理方法
摘要：
本发明涉及内燃机活塞和活塞表面处理方法。所述内燃机活塞包括活塞基材和润滑涂覆组合物的膜。所述涂覆组合物具有形成在活塞基材表面上的内涂层和形成在该内涂层表面上的外涂层。内涂层和外涂层各自含有聚酰胺-酰亚胺树脂、聚酰亚胺树脂和环氧树脂中的至少一种作为粘合剂。所述内涂层含有0-50重量％的石墨和二硫化钼中的至少一种作为固体润滑剂，而所述外涂层含有50-95重量％的石墨和二硫化钼中的至少一种作为固体润滑剂。
摘要（英）：

A piston for an internal combustion engine includes a piston base material and a film of lubrication coating composition. The coating composition has an inner coating layer formed on a surface of the piston base material and an outer coating layer formed on a surface of the inner coating layer. Each of the inner coating layer and the outer coating layer contains at least one of a polyamide-imide resin, a polyimide resin and an epoxy resin as a binder. The inner coating layer contains 0 to 50 wt % of at least one of graphite and molybdenum disulfide as a solid lubricant, whereas the outer coating layer contains 50 to 95 wt % of at least one of graphite and molybdenum disulfide as a solid lubricant.

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