Properties of Coatings Deposited from Filtered Vacuum Arc Plasma with HEA Cathode
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Date
2013
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Sumy State University
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Abstract
Ti-V-Zr-Nb-Hf metallic and nitride films were deposited by filtered vacuum arc plasma from a single
equiatomic HEA cathode. The composition, microstructure, mechanical properties, thermal stability and
corrosion properties were investigated.
The deposited metallic film has a two-phase structure with bcc and hcp-lattice. The nitride films were
found to have only an fcc structure. All coatings have nano-grained structures, with grain sizes 5 nm for
metallic and 36 nm for nitride. The nitride coatings have a compressive stress of around – 12,5 GPa, high
hardness ~ 40 GPa and elastic modulus ~ 450 GPa. After annealing in vacuum in range 400-1200 °C, 3 h
for every temperature, hardness decreased to 25 GPa. It was found that both the metallic and nitride coatings
exhibited their best corrosion resistance than steel samples in a 3,5 wt. % NaCl solution. The metallic
coatings showed better corrosion resistance than the nitride coatings.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35323
Keywords
Filtered vacuum arc, High-entropy alloy, Nanostructured coatings, Hardness, Thermal stability, Corrosion
Citation
Properties of Coatings Deposited from Filtered Vacuum Arc Plasma with HEA Cathode [Текст] / V.A. Belous, S.A. Firstov, V.F. Gorban et al.
// Nanomaterials: Applications & Properties (NAP-2013) : 3-rd International conference, Alushta, the Crimea, Ukraine, September 16-21, 2013 / Edited by: A. Pogrebnjak. - Sumy : Sumy State University, 2013. - V.2, No2. - 02FNC12