Abstract
The life span of many engineering components depends upon their surface properties. The improved surface properties of the materials are essential for enhancing the mechanical and tribological performance of the material. The tribological behaviors of sintered composites under dry sliding condition were analyzed by using pin on disk tribometer (Model no: DUCOM-TR-20-M100). Particle size of elemental powder of Al70Cu22Ti8 was measured by Malvern laser particle size analyzer. PSM shows the variation in median size with milling time. The effect of density and hardness on wear behavior of composite has been analyzed. DSC examines the physical behavior of Al-based intermetallic as a function of time and temperature. DSC study shows the presence of small endothermic peak at 535 °C for formation of Al2Cu and two exothermic peaks at 701 °C and 850 °C for formation of other intermetallic like AlTi3, Cu9Al4, and AlCu. A maximum of 81% theoretical density was obtained for the composite powder mixture sintered at 1100 °C for 1 h. Wear study shows that TiO2 and Y2O3 dispersed base alloy have higher wear resistance than base alloy.
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