Turbomachines are subject to excessive rate of erosion when operated in dusty environments or exposed to combustion gases of newly developed synthetic fuels or heavy oils. The surface quality of the blades exposed to such particulate flow deteriorates. With time, the surface roughness increases and leads to a decrease in engine performance. This paper presents the results of the experiments carried out in an erosion wind tunnel on 6061T6 aluminum specimens to study the roughness formations. The particles used were silica sand.

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