Tribological behaviour of MoS2 and graphite reinforced aluminium matrix composites were investigated in this research. In the current scenario, applications in which either metal based alloys or composites are used, requires lubrication to avoid friction. In such cases, self-lubricating materials based aluminium composites can be fabricated to exhibit better tribological properties. These materials can be fabricated by reinforcing self-lubricating materials like graphite (Gr), molybdenum disulphide (MoS2) and so on within the aluminium matrix. In this tribological study, two different solid lubricants (Gr and MoS2) were taken at equal proportions to fabricate aluminium matrix composites individually through stir casting method. Pin on Disc apparatus was utilized to record the rate of wear of the composite specimen by considering the process parameters like sliding distance, load and counter-face disc hardness. Experiments were designed by Taguchi’s approach and analyzed by means of response values and analysis of variance (ANOVA). Results depicted that graphite based aluminium alloy composites possessed better wear resistance than MoS2 reinforced aluminium alloy composites.
The wear behavior of aluminium alloy (A356) reinforced with 5 wt. % of quarry dust particles composite disc was sliding against automobile brake friction lining pin was investigated. Dry sliding wear studies were investigated in pin-on-disc apparatus. The wear tests were carried out range of applied load 20 to 60 N and constant sliding velocity (0.5 m/s) under sliding distance of 500 m. The wear behavior of aluminium metal matrix composite (AMC) has been compared with the commercially used 25 grade Gray Cast Iron disc (GCI).The results showed that the wear rate of AMC disc decreased with increasing the applied load. However the wear rate of AMC disc with respective pin decreased with increasing the applied load. The coefficient friction increased with increasing the applied load. The scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDAX) used to investigate the disc and pin. The wear debris was analyzed by SEM image.
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