Dry Sliding Wear Behavior of Magnesium Composites with Ti3AlC2 Reinforcement: Tribological Responses and Underlying Mechanisms

The phenomena associated with dry sliding wear of Mg-Ti 3 AlC 2 composites have been investigated under a range of applied load, sliding velocity, and distance. Ti 3 AlC 2 reinforcement of 20-40 vol.% was chosen to see the dependency of tribological responses such as coefficient of friction (CoF) and specific wear rate (SWR). Wear maps were also constructed to investigate variations in CoF and SWR with the aforementioned test variables. Our observation from those responses showed a marked decrease in CoF and SWR with an increase in load and speed. This phenomenon elucidates the ability of this composite to repair the worn-out surface. Compositional aspects of the tribo-film formed in the contact area showed the presence of mixed oxides enriched in Ti over Mg.