In this study, copper matrix composites reinforced with graphite (5, 10, 15 wt%) were produced using powder metallurgy process. Milled powders were compacted under 637 MPa pressure to produce cylindrical specimens of approximate dimension of 10 mm diameter and 30 mm length. Cylindrical specimens were sintered under vacuum at 900, 950, 1000°C for 2 h holding time at highest temperature. Hardness and compression strength of composite samples were determined. The microstructures of specimens were investigated by optical microscope, scanning electron microscope and energydispersive spectroscopy. Homogeneous distribution of reinforcement phase in copper matrix composites was observed. Graphite reinforcement improved the compression strength of composites of around 108% with 5 wt%, around 34% with 10 wt% of reinforcement. However, significant decrease of compression strength was observed with 15 wt% of graphite reinforcement in the copper matrix. Reinforcement of graphite into copper matrix has improved the wear property of the composite materials.

An examination of Aluminum Metal Matrix Composites (AMMCs) dry sliding wear activities reinforced with reinforcements along with carbides, oxides, and nitrides. However, from the analysis, the method adopted for the composite processing plays a crucial role in achieving a uniform homogeneous composition. Preparation of base metal and reinforcement powders plays a vital role in the process of powder metallurgy, improving wettability between reinforcement particles and molten base metal in liquid metallurgy is a difficult task. AMMCs wear activity is based on different test parameters. As mechanical and tribochemical are the process involved in substance removal during dry sliding wear is subdivided into groups. The loss of reinforcement from the AMMCs through sliding wear decreases the wear rate due to abrasion by three parts. The use of solid lubricant decreases wear severity through the formation of a tribolayer between the rubbing surface. Optimizing the wear intensity is through the use of suitable replacements with optimal lubricants.