Experimental Investigations on Wear Properties of Al-7075/ZrO2/ Coal bottom ash Metal Matrix Composites

Aluminium alloys and its composites have a huge requirement in the field of automobile, aerospace and other versatile engineering applications. The present study deals with Al 7075 as base matrix material, whereas ceramic particle like zirconium oxide (ZrO2) and bottom fly ash are used as reinforcements for the production of hybrid composites. Four different MMC specimens were produced with 2% ZrO2, 4%ZrO2, 6%ZrO2, 8%ZrO2 and 10% of coal bottom ash is constant in every sample. Wear properties are studied on the fabricated composite specimens. Morphological studies are also studied on the tested samples using Scanning Electron Microscopy (SEM) to observe the bonding between matrix and reinforcements. Good wear resistant is achieved for third specimen i.e 6% ZrO2 at 10% coal bottom ash. SEM testing results in study of various bonding structure at different microns.