Bonding Mechanism of Mechanically Deposited Coating/substrate

Zinc coatings were prepared by mechanical plating method. OM and SEM equipped with EDS was utilized to observe and analyze the structure and bonding state of the interface between the coating and the substrate. XRD was employed to analyze the phase composition of the coating/substrate interface. The research result shows that a distinct boundary exists in the interface of the coating/substrate. No solid solutions or compounds and other alloy phases are available in the coating/substrate interface. A small amount of tin is contained between the coating and the substrate. The predominant bonding mechanism in the coating/substrate interface is mechanical keying.