Tribological analysis of hybrid aluminum matrix composites for high temperature applications

Abstract

This research investigation explores the tribological performance of LM16 aluminum alloy-based Hybrid Aluminum matrix composite (HAMC). In this work is aimed to find optimum proportionality of the reinforced with Nickel coated Graphite (Ni-Gr.) and Silicon Carbide (SiC) of the Hybrid Aluminum matrix composite (HAMC) for the high-temperature applications. The stir casting technique is used for preparing the HAMC with reinforcement of Nickel coated Graphite (Ni-Gr) in weight of 2% and Silicon Carbide (SiC) varies 5% & 10% of weight into the LM16 aluminum alloy. The wear properties have been evaluated with the aid of a pin on disc apparatus and the L9 orthogonal array has been chosen for experimentation to know the impacts of process parameters like load, sliding distance, the weight percentage of hybrid reinforcements, and temperature. ANOVA is used to determine the optimum coefficient of friction (COF) and the loss of wear conditions of the HAMCs. It was found that temperature and applied load are the primary influence paraments in the tribological properties of LM 16 based Hybrid Aluminum matrix composites, the wear and coefficient of friction characteristics were studied with the help of SEM images.