An internal combustion engine and a method of coating a combustion chamber wall surface therein comprising the steps of preheating the base metal forming the wall surface to at least 500.degree. F. and fusion bonding a base layer of nickel and aluminum to the preheated base metal for retarding conductive heat transfer through the wall surface. An intermediate layer comprising nickel, aluminum, and copper is applied over the base layer and an outer layer of copper for reflecting infrared heat is applied over the intermediate layer, which helps to mechanically bond the base layer and outer layer together.
A composite nickel and copper alloy plating film (3) containing nickel and copper. Nickel is of high wear resistance and a nickel alloy improves the wear resistance of the film. Copper is of high resistance of the film. The film may further contain self-lubricating particles and hard particles which ensure its wear resistance and lubricating property to a further extent.
