In the present paper rheological behaviour of composite coating consisting of Aluminum Oxide-Polymer-Chrome Carbide was examined by using rheological models for principal Hertzian contact of a sphere and a plate.The crystallographic and morphologic texture was characterized and the fracture resistance was measured using fracture-mechanics.A rheological model of the composite coating has been proposed and confirmed by in situ experiments.Several requirements to rheological models were formulated regarding an adequate strain-deformation state of the composite coating.Load rating revealed ultimate strain-deformation rates.Analysis of the models and experimental results revealed better understanding of composite failure and degradation mechanics.
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