Wear Characteristics of Double Ceramic Particulate Hybrid Aluminium Matrix Composite

Abstract

Metal matrix composites got popularity due to their light weight and high strength and replacing metal parts from various applications like aerospace, automobile and biomedical. Aluminum matrix composites (AMC) are suitable for the aerospace industries and still the research is going on to use it for other applications. In this research work, a double ceramic particulate AMC was synthesized. The ceramic powders used were alumina (Al2O3) in wt. % of 0.5, 1.0 and 2 and silicon dioxide (SiO2) in wt. % of 0.5 and 1.0. The synthesis of composites was done by stir casting method. SEM analysis showed that porosity was reduced and the distribution of reinforcement particles were uniform throughout the matrix. Wear test was carried out using pin on disc wear testing machine, results showed reduction in wear. SEM analysis of worn out specimen showed transition from adhesive wear to abrasive wear for hybrid composites.