Modeling study of solid-particle erosion with consideration of particle velocity dependent model parameters

An advanced erosion model that correlates two model parameters-the energies required to remove unit mass of target material during cutting wear and deformation wear, respectively, with particle velocity, particle size and density, as well as target material properties, is proposed. This model is capable of predicting the erosion rates for a material under solid-particle impact over a specific range of particle velocity at the impingement angle between 0 degrees and 90 degrees, provided that the experimental data of erosion rate for the material at a particle velocity within this range and at impingement angles between 0 degrees and 90 degrees are available. The proposed model is applied on three distinct types of materials: aluminum, perspex and graphite, to investigate the dependence behavior of the model parameters on particle velocity for ductile and brittle materials. The predicted model parameters obtained from the model are validated by the experimental data of aluminum plate under Al2O3 particle impact. The significance and limitation of the model are discussed; possible improvements on the model are suggested.