Wear Behavior of Disk Shape Spray Formed Al-Si-Pb Alloys

Wear behavior of spray formed Al-Si-Pb alloys was investigated using a pin on disk type wear testing machine. Wear rate behavior with applied load was observed to depict three stages, in the second stage rate of increase in wear rate was the lowest and in the third stage it was the highest. The wear rate decreased with the increase in distance from center to periphery of the spray deposit. It decreased linearly with the increase in lead content and it was lower for 12% Si as compared to that of 6% Si in Al-Si-Pb alloys. The coefficient of friction decreased rapidly up to the load of 40 N and beyond this load the friction coefficient was almost constant. The coefficient of friction was lower for higher lead content.