COMPOSITE PLATING FILM AND A PROCESS FOR FORMING THE SAME

摘要

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 corrosion resistance and a copper alloy improves the corrosion 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.