Modeling of Particle-Substrate Adhesive Interaction Under the Cold Spray Process

This paper presents some results of modelling of the adhesive interaction of solid particles with the substrate at collision parameters characteristic for the Cold Spray process. A simple physical model based on comparison of adhesion energy and energy of elastic deformation generated under the particle impact is suggested. Empirical expressions for energies of adhesion and elastic deformation are obtained. It is shown that there is an optimal range of particle size and velocity providing high deposition efficiency for a given particle material. The results of the modeling are in good qualitative agreement with experimental data.