Experimental Investigation of Mechanical and Tribological Properties of Al-sic and Al-gr Metal Matrix Composite

This Investigation studies the Mechanical and Tribological behaviour [ i.e dry sliding behaviour] of Al matrix composites reinforced with SiC and Gr particulate up to 10%, to study the effect of reinforcement, Load, Sliding speed and Sliding distance on stir cast Al-SiC and Al-Gr Metal matrix composites. Parametric studies indicate that the hardness, tensile strength of Al-SiC composite is greater than that of Al-Gr composite because of high hardness of SiC particulates. As graphite has a solid lubricant property but due to increased percentage of graphite as an reinforcement [i.e 10%], its wear characteristics also reduces. The corresponding values of composites, clearly indicating that the Al-SiC composite exhibits better hardness and wear characteristics, Increase of either Load or Sliding distance or both increases wear.