Characterization and Wear Behavior of Nano ZrO2 Reinforced Copper-Zinc Alloy Composites

Abstract

In the present investigation, an endeavor has been made to create copper-zinc-nano ZrO2 particulates strengthened composites by utilizing liquid stir technique. 4, 8 and 12 wt. % of nano ZrO2 particulates were added to the Cu-10 wt. % Zn base grid. Microstructural studies were finished by utilizing SEM and EDS examinations. Wear behavior of Cu-Zn-4, 8, 12 wt. % of nano ZrO2 composites were assessed according to ASTM G99 benchmarks. Scanning electron micrographs uncovered the uniform dispersion of nano ZrO2 particulates in the copper zinc composite network. EDS examination affirmed the nearness of Zr and O components in nano ZrO2 strengthened composites. The experiments were conducted at a constant speed of 400rpm and sliding distance of 3000m over a varying load of 1, 2, 3 and 4 kg. Similarly, at a constant load of 4 kg and sliding distance of 3000m over a varying sliding speed of 100, 200, 300 and 400rpm. The results showed that the wear resistance of Cu-Zn-4, 8% and 12% ZrO2 nano composites were superior than the as cast alloy. As load and speed increased the height loss in the composites and alloy was increased. Worn surface morphology was studied by using SEM.