ANALYSIS OF FRACTURE OF THIN CERAMIC AND CARBON COATINGS BY MODELING AND INDENTATION EXPERIMENTS
Journal Title: Tribologia - Year 2011, Vol 239, Issue 5
Abstract
In article consideration about deformations and failure of coating-substrate system by plastic deformation of substrate and coatings fracture were presented. Analysis were based on FEM modelling and spherical microindentation results. Such complex analysis allow to determine critical loads and corresponding stress distribution leading to coatings fracture. Ceramic TiN and carbon a-C:H coatings deposited on X10CrNi 18-8 steel substrates were under consideration. It was found that tensile stress on the coatings surfaces, caused formation of first annular cracks, is sR = 6.5 i 2.4 GPa for TiN and a-C:H coatings respectively. SEM and TEM microscopic investigations have shown great impact of coating microstructure on trough thickness crack propagation.
Authors and Affiliations
Marcin Kot, Wiesław Rakowski, Łukasz Major, Paulina Indyka
Keywords
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