Calculation of the elastic-stressed state under concentrated loading in diamond-like-metal substrate system

A model is proposed which reduces the contact problem of a coating to that of an elastic semi-space with modified boundary conditions. The model takes into account mechanical (difference in elastic modulus of the coating and substrate) and geometric (ratio of contact area to coating thickness) prope rties of a coating-substrate system, and conditions of their interface conj ugation. A comparison of the model outcomes with calculation results for th e problem without a coating is carried out in a simple case of uniaxial loa d. Experiments on the shock action of corundum particles on the surface of two mechanically different metals (aluminium and steel) with diamond-like c oating are considered. (C) 2001 Elsevier Science B.V. All rights reserved.