The test rig fabricated for the present work has an ability to study the effect of orientation angle of erosion wear. The particles of Indian Standard sand (Quartz) selected as erodent for the present investigation because it is the most widely occurs in natural slurries. Experimental investigations on erosion behavior of ductile materials AISI SS304, AA 6063, Copper and Brass have been carried out using solid-water mixtures of the above erodent. The erosion wear due to solid-liquid mixture of IS Sand and tap water at different impact angles shows typical ductile erosion behavior for the selected materials. The maximum erosion is observed at 22.5° angle for AISI SS 304, 45o for AA 6063, 22.5o for Copper and 30o for Brass. The minimum erosion is observed at 90o orientation angle for all the materials. The eroded specimens were examined under the Scanning Electron Microscope (SEM) at minimum and maximum wear orientation angles. The SEM micrographs of eroded specimens depict the mechanism of material removal.

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