Study of the Nature of the Destruction of Coatings Based on the ZrN System Deposited on a Titanium Alloy Substrate
Alexander Metel,
Alexey Vereschaka,
Catherine Sotova,
Anton Seleznev,
Nikolay Sitnikov,
Filipp Milovich,
Kirill Makarevich,
Sergey Grigoriev
Affiliations
Alexander Metel
Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky Lane 3a, 127055 Moscow, Russia
Alexey Vereschaka
Institute of Design and Technological Informatics of the Russian Academy of Sciences (IDTI RAS), Vadkovsky Lane 18a, 127055 Moscow, Russia
Catherine Sotova
Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky Lane 3a, 127055 Moscow, Russia
Anton Seleznev
Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky Lane 3a, 127055 Moscow, Russia
Nikolay Sitnikov
The State Scientific Centre Keldysh Research Center, Onezhskaya St., 8, 125438 Moscow, Russia
Filipp Milovich
Materials Science and Metallurgy Shared Use Research and Development Center, National University of Science and Technology “MISiS”, Leninsky prospect 4, 119049 Moscow, Russia
Kirill Makarevich
Federal State Budget Educational Institution of Higher Education, MIREA—Russian Technological University, Vernadsky Avenue, 78, 119454 Moscow, Russia
Sergey Grigoriev
Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky Lane 3a, 127055 Moscow, Russia
The fracture strength was compared in a scratch test of coatings based on the ZrN system with the introduction of Ti, Nb and Hf, which were deposited on a titanium alloy substrate. The coatings were deposited using Controlled Accelerated Arc (CAA-PVD) technology. In coatings that simultaneously include Zr and Ti, a nanolayer structure is formed, while in coatings without Ti, the formation of a monolithic single-layer structure is observed. The comparison was carried out according to two parameters: adhesion strength to the substrate and overall coating strength. The (Zr,Hf)N coating showed better resistance to destruction, but had worse adhesion to the substrate. As a result, although the coating is retained directly in the scribing groove, a large area of delamination and destruction is formed around the groove. The (Ti,Zr,Nb)N coating, with its somewhat lower strength, has a high adhesion to the substrate; no noticeable delamination is observed along the groove boundary. In this paper, not only is the fracture resistance of various coatings deposited on a titanium alloy substrate compared, but the nature of this fracture is also investigated depending on the composition of the coatings.
