Estimation of Residual Stresses in Coatings of "Hard" Topocomposites by Repeated Microindentation

There are two methods developed for determining residual stress in "hard" topocomposites coatings, characterized by the occurrence of an interfacial fracture at the coating-substrate interface during instrumental indenting. The novelty of the techniques lies in the analysis of the pyramidal indenter indentation diagram obtained as a result of a repeated indentation cycle. The results can be used in practice and in scientific research to quantify the type and value of uniaxial residual stresses in thin hard topocomposite coatings, the substrate material of which differs significantly in hardness from the coating material.