A description of the composite elastic modulus of multilayer coated systems

摘要: The evaluation of the elastic response coated systems under indentation loading represents a crucial issue, which determines behavior such tribological applications. Although number models have been proposed in literature for description change composite modulus with depth, as well determination monolayer coatings, only few works address analysis multilayer coatings. present work proposes general methodology, allows modification and extension employed study For this purpose, examined, including those by Gao et al., Mencik Perriot Barthel, Antunes Korsunsky Constantinescu, Doerner Nix, Bec al. Bull. foundation advanced formalism is physically-based concept Iost computation volume fraction each layer coating therefore, its contribution to global indentation. modified are further system composed 2024-T6 aluminum alloy substrate DLC/CrC/CNiPCr/NiP approximately 54 μm thickness, as, set experimental data reported Bull bilayer system. It has shown that different analyzed able provide satisfactory data, although quality fit depends on material parameters involved model. mean square error conducting comparison between models.