CHARACTERISATION AND TRIBOLOGICAL PROPERTIES OF HARD ANODISED AND MICROARC OXIDISED 5754 QUALITY ALUMINUM ALLOY

摘要

This study was initiated to compare the tribological performances of a 5754 quality aluminum alloy after hard anodic oxidation and microarc oxidation processes. The structural analyses of the coatings were performed using XRD and SEM techniques. The hardness of the coatings was determined using a Vickers micro-indentation tester. Tribological performances of the hard anodised and microarc oxidised samples were compared on a reciprocating wear tester under dry sliding conditions. The dry sliding wear tests showed that the wear resistance of the oxide coating generated by microarc oxidation is remarkably higher than that of the hard anodised alloy.