Fracture of Nanostructured Ceramic Coatings on Metal Substrates under Thermal and Mechanical Loadings

Abstract

Characteristic features of fracture of nanostructured Si-Al-N and Zr-Y-O ceramic coatings on metal substrates subjected to thermal cycling, uniaxial tension and wear tests are studied. The effect of elemental composition of the coatings on their fracture and delamination from the substrate is shown. The effect of bombardment of the Cu substrate by low-energy Zr+ ions on adhesion and fracture of the Si-Al-N heat resistant coatings is investigated. The dependence of the wear resistance of Si-Al-N / Zr-Y-O multilayer coatings on the number of Si-Al-N and Zr-Y-O layers and on their thickness is revealed. It is found that the coating consisting of 6 bilayers is characterized by minimal wear. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35309