Present study explores the effect of Rice Husk Ash (RHA) reinforcements in mechanically alloyed Al-BN-SiC hybrid composites through experimental characterization. The physical, tribological and corrosion resistance properties of Al-BN-SiC-RHA hybrid composites are studied. In the outset the composite pellets are synthesized using powder metallurgy process. The homogenously amalgamated composite powders are then squeezed together to form multiple green composite pellets each measuring 8 mm in diameter using a hydraulic press at a pressure of 500 MPa. The Al-BN-SiC-RHA hybrid composites are characterized using FE-SEM, EDS, and XRD analysis for facilitating the studies on the microstructural as well as the elemental properties. Microhardness and compressive strength of the Al-5BN-5SiC-5RHA hybrid composites is found to improve by 6 and 13.6% respectively compared to those of Al-5BN-5SiC hybrid composites. The RHA reinforced hybrid composites have also experienced reduction in density and an enhancement in the wear resistance of the composite materials while compared to those for their non-RHA counterparts. The electrochemical corrosion analysis of the Al-5BN-5SiC-5RHA hybrid composites also confirms that the Al-5BN-5SiC-5RHA hybrid composites have better corrosion resistance.
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