Analytical Prediction of Roughness after Ball Burnishing of Thermally Coated Surfaces

Abstract An analytical model to predict the roughness of a thermally sprayed coating after a ball burnishing process is presented. Based on the observation of a roughness peak, a correlation between the leveling during rolling and the surface pressure under the rolling ball as well as a material parameter is derived. Ball burnishing experiments on thermally coated surfaces were carried out to verify the model. A good correspondence between the experimental data and the calculated values is presented.