WEAR AND ELECTROCHEMICAL CORROSION BEHAVIOUR OF NANO ZRO2 REINFORCED AA7075 METAL MATRIX COMPOSITES

This article examine the corrosion and wear behavior of AA-7075 rein forced with Nano-ZrO2, size of the particles varies from 20-30 nm and composites were fabricated by stir casting technique with wt% fraction varies from 0 to 4 wt%. The density of the base alloy and composites are measured. As per the ASTM standards Impact, strength and Compression strength were conducted. Microstructural study, Electrochemical corrosion, and wear test were conducted to assess the act of AA-7075 and composite. Nano-ZrO2 is distributed uniformly, it was observed by metallurgical microscope. Wear is decreased at 2 and 4wt% of rein forcement. Coefficient of friction decreased for composites compared to the base alloy. Compressive and impact strength is developed in rein forcement from 0 to 4 wt%. Composites show a higher density Compared to AA-7075. It was observed at 4 wt% of composite have higher corrosion resistance with compared to AA-7075 in 3.5% NaCl solution.