A novel coating process based on semisolid state casting of zinc-tin alloy was developed to form
solid lubricant thin film on an aluminum cast alloy.
Resulting surface morphology was consisted of the
dispersed molybdenum disulfide and sliver fine particles
fixed with the tin-zinc alloy. Tribological properties were
evaluated with a ring on disc type testing apparatus using
a cast iron ring as the counter specimen in lubricated
condition. Results showed that the friction coefficient of
the coating surface was low and stable. Furthermore, the
addition of silver into the film seemed to be effective
means to shorten the running-in distance.