Air Jet Erosion Studies on Mg/SiC Composite

Magnesium with 10% SiC is identified to be a suitable composition for wear resistance application. To improve the utilization of this composite for various industrial applications, erosion study has been conducted by using air jet erosion tester with varied machining conditions. The composite is prepared by a conventional stir casting process. Alumina is taken as an erodent particle. Impact angle, erosion velocity, and discharge rate are taken as the governing parameters of erosion rate. Lower impact angle and high erodent velocity yield to have a high erosion rate of 0.022 g/min with the least surface finish of 1.48 μm. Erosion velocity is found to have a significant
effect of 59% over the other considered parameters. Further, the analysis of the surface profile parameters likely; Ssk, Sku, Sp, Sv, and Sa on the machined surface reveals the mechanism of the material removal and also, the surface defects are analyzed by using SEM image.