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Abstract
Profiles of abraded metal surfaces have been analysed in terms of a random surface model to determine the average radius of curvature of the asperities, R av . The wear rates of polymers against these surfaces vary inversely with R av , and the form of the variation is consistent with a fatigue theory of wear. Analyses have also been made of the topography of metal surfaces modified, during sliding against carbon fibre reinforced polymers, by abrasion, corrosion or transfer. In all cases the wear rates of the composites again vary inversely with R av . The results provide quantitative support for the conclusion that the topography of the metal counterface is the predominant factor in determining the magnitude of the wear rate of polymers and composites in widely differing conditions of sliding.
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