| Summary: | In this study, a novel self lubricating nano-composite Al-SiC-nAl2O3-WS2 has been synthesized via powder metallurgy method. Nano-Al2O3 has been prepared via combustion synthesis. Three different compositions by varying the amount of solid lubricant, WS2 (0, 5, 9) wt.% were synthesized and analyzed. The density measurements of composites were carried out by using Archimedes Principle. The micro hardness value of every composition was obtained by using micro hardness tester. The tribological properties were investigated under dry and unidirectional sliding conditions on a pin on disk tribometer. Taguchi L9 orthogonal array was used to study the effects of various parameters like load, content, speed and sliding distance on wear and frictional behavior of the composites. Analysis of variance (ANOVA) was used to investigate the percentage contribution of various parameters on the wear and friction behavior. It was observed that composite with 5 wt.% of WS2 exhibited lower friction and wear. SEM images obtained therein revealed that ploughing and abrasion are the two dominant mechanisms of wear. Keywords: Aluminum, Tribology, Combustion synthesis
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