Study on the influence of surface roughness on the erosion characteristics of compressor blades

An aluminum alloy erosion wear test rig was built in this study. The wear rates of the target materials at different surface roughness were measured. An improved Finnie model was developed to predict the wear rate for aluminum alloy plates at different surface roughness. The optimized model was used to analyze the effects of different surface roughness on the erosion wear of the main and splitter blades of the compressor. The study shows that as the surface roughness increases from 1 μm to 60 μm, the size of wear concentration areas of the pressure surfaces of the main and splitter blades spread from the blade height of 80% to 30% and 50%, respectively.