Examination of Dynamics of Polymeric Coatings Erosive Wear Process

Abstract

An assessment of erosive wear process dynamics of epoxy coatings is presented in the paper. From the examination results it was stated that kinetics of erosive wear depends on erosive particles velocity, their concentration, micro- and macrostructure of coating and impact angle of particles. Microcutting of coatings is a dominant process of examined coatings wear and its greatest share is observed for impact angles α < 30°. However, the participation of fatigue spalling of coating material, processed by its plastic deformation, increased with increase of erosive particles impact angle. The proposed mathematical model of erosive wear process of construction element surface effectively describes dynamics of this process in dependence on: erosive particles impact angle, their concentration and velocity in the moment of impact. Finite elements method enabled effective prediction of surface profile shape of polymer coatings subjected to the erosive particles action.