High Entropy Alloys Based on Nitrides of Refractory Metals – a New Solution for Protective  Coatings on the Instruments Working at High Temperatures

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Title	High Entropy Alloys Based on Nitrides of Refractory Metals – a New Solution for Protective Coatings on the Instruments Working at High Temperatures
Authors	Azarenkov, N.A. Beresnev, V.M. Nyemchenko, U.S. Lytovchenko, S.V.
ORCID
Keywords	High entropy alloys Coatings Vacuum-arc deposition Nanocomposite coatings
Type	Article
Date of Issue	2014
URI	http://essuir.sumdu.edu.ua/handle/123456789/37314
Publisher	Sumy State University
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Citation	Proc. NAP 3, 01FNC08 (2014)
Abstract	The coatings based on (Ti-Al-Zr-Nb-Y)N and (Ti-Zr-Hf-V-Nb-Ta)N were obtained by means of vacuum-arc deposition from the cathodes based on Ti+Al+Zr+Nb+Yand Ti+Zr+Hf+V+Nb+Tasystems in the atmosphere of nitrogen. Their physical and mechanical properties, as well as tribotechnical characteristics have been studied. The coatings are characterized by a columnar structure and their hardness reaches 51.02GPa. The adhesion strength of the coatings has also been studied, the coefficient of friction of the system “coating – Al2O3“ is 1.1.The results of tribological tests at high temperature showed that at 460 °C coatings had greater wear resistance, lower coefficient of friction compared to similar tests of coatings at 20 °C.These coatings are perspective as protective coatings for friction pairs and cutting tools.
Appears in Collections:	Наукові видання (ЕлІТ)