Abstract
Preparation of magnesium silicide (Mg2Si) intermetallics film was achieved by the surface modification of the magnesium alloy using a pulse electric-current heating process together with Si powder. In this study, the change of the load pressure in the pulse electric-current heating process enables the density control of Mg2Si film. Some results of SST to evaluate the corrosion resistance indicated that AZ31 substrate with high pressure Mg2Si coating showed no damage after 96h. On the other hand, the subdtrate with no coating was corroded within only 1h, and showed remarkably damaged surfaces. Pin-on-disk type wear test under an oil lubricant indicated that a friction coefficient was low and stable in using AZ31 alloy disk specimen coated with Mg2Si film.
