Abstract
Ceramic reinforcements are becoming common phenomena to augment the deficiencies of light aluminium alloy composites more often in wear resistance. Assessment of wear resistance by pin on disc or ball on disc does not adequately represent the abrasion resistance realistically to the actual application. This paper deals with the outcome of experimental study carried out on sintered aluminium alloy 7075 composites reinforced with (5 wt%, 10 wt% and 15 wt%) titanium carbide (TiC) particles. The results show that coefficient of friction is increasing with respect to reinforcement percentage in conventional sintered composites whereas it is reducing with respect to increase in reinforcement percentage in microwave sintered composites. An attempt is also made to understand the effect of microwave sintering on the friction performance of the composite in comparison with conventional sintering. Wear mechanism is also presented based on optical micrographs of the scratched surface. Various hardness measuring methods were also carried out to study the influence of the methods on the hardness of the samples and illustrated the same.
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