Abstract
The erosion of ductile metals by angular abrasive particles at grazing angles of incidence is generally accepted as being due to a cutting mechanism. By contrast, a number of widely different mechanisms have been proposed to explain erosion at perpendicular or near-perpendicular angles of impingement. In the present work the influence of the roughness of an eroded surface is examined. It is shown that measurements of surface profile may be combined with the analysis of a grain striking a smooth surface to predict the value of erosion for globally perpendicular impact.
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