Effect of composition and growth mechanism on the structure formation and functional properties of tialsiyn/mon nanolayer-thick coating

Buranich V.V. Tsyganok P.S. Pogrebnjak A.D. Kassenova L.G. Kupchishin A.I. Webster R.F. Tilley R.D. Bondar O.V. Rokosz K. Raaen S. Beresnev V.M. Lytovchenko S.V. Rakhadilov B.K.
2021 Begell House Inc.

High Temperature Material Processes
2021 #25 Issue 2 31 - 51 pp.

Hard and wear-resistant protective coatings based on metal nitrides have been used for decades as support for the stable functioning of mechanical instrumentation: cutting tools, gears, and drills. Combining multielement nanocomposite (TiAlSiYN) and nanodimensional multilayer (MoN) concepts of coatings deposition, in turn, ensure the way to tune promising properties and performance. In this paper, the coating was synthesized by the reactive cathodic arc deposition at intensive nitrogen pressure and was studied in the internal structure and composition manner. X-ray diffraction and scanning/transmission electron microscopy analyses have revealed the mechanism of coherent growth of fcc TiAlN on fcc γ-Mo₂N along (200) plane. Surface and lateral section contained microdroplet fractions of Mo and Ti–Si–N, respectively, whose formation was attributed to the deposition features and elemental segregation within a coating. The study has unveiled the processes corresponding to nanostructure formation in the nanocomposite and template layers. It was shown that Al bonds prevail in the upper TiAlSiYN layer recognized as an influential factor of the enhanced hardness (33.2 GPa) due to the formation of TiAlN solid solution. The vacancy exchange mechanism in MoN layers was proposed as a source for structural stability. Yet, the tribological tests pointed out the deficiency of lubricating particles in the TiAlSiYN matrix. Additional studies regarding the optimization of composition are required.

Cathodic arc , Microstructure analysis , Nanocomposite coatings , Nanolayers , X-ray diffraction

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Sumy State University, 2 Rimsky-Korsakov Str., Sumy, 40007, Ukraine
Al-Farabi Kazakh National University, Department of Biotechnology, 71 Al-Farabi Ave., Almaty, 050040, Kazakhstan
Kazakh University of Economics, Finance and International Trade, 7 Zhubanov Str., Astana, 020000, Kazakhstan
Abai Kazakh National Pedagogical University, 13 Dostyk Ave., Almaty, 050010, Kazakhstan
Electron Microscope Unit, Mark Wainwright Analytical Centre, University of New South Wales, Sydney, 2052, NSW, Australia
Division of Surface Electrochemistry and Technology, Faculty of Mechanical Engineering, Koszalin University of Technology, Racławicka 15-17, Koszalin, PL 75-620, Poland
Department of Physics, Norwegian University of Science and Technology (NTNU), Høgskoleringen 5, Trondheim, NO 7491, Norway
V.N. Karazin, Kharkiv National University, 4 Svoboda Sq., Kharkiv, 61022, Ukraine
Sarsen Amanzholov East-Kazakhstan State University, 34, Bld. 1, 30th Guards Division Str., Ust-Kamenogorsk, 070000, Kazakhstan

Sumy State University
Al-Farabi Kazakh National University
Kazakh University of Economics
Abai Kazakh National Pedagogical University
Electron Microscope Unit
Division of Surface Electrochemistry and Technology
Department of Physics
V.N. Karazin
Sarsen Amanzholov East-Kazakhstan State University

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