Please use this identifier to cite or link to this item: http://essuir.sumdu.edu.ua/handle/123456789/64237
Title: The influence of nitrogen pressure on the fabrication of the two-phase superhard nanocomposite (TiZrNbAlYCr)N coatings
Authors: Погребняк, Олександр Дмитрович
Погребняк, Александр Дмитриевич
Pohrebniak, Oleksandr Dmytrovych
Смирнова, Катерина Василівна
Смирнова, Екатерина Васильевна
Smyrnova, Kateryna Vasylivna
Кравченко, Ярослав Олегович
Кравченко, Ярослав Олегович
Kravchenko, Yaroslav Olehovych
Beresnev, V.M.
Zukowski, P.V.
Bondarenko, G.G.
Keywords: Microstructure
Multielement
Chemical composition
Superhardness
Crystallites
Issue Year: 2018
Publisher: Elsevier
Citation: The influence of nitrogen pressure on the fabrication of the two-phase superhard nanocomposite (TiZrNbAlYCr)N coatings [Text] / A.D. Pogrebnjak, V.M. Beresnev, K.V. Smyrnova [et al.] // Materials Letters. — 2018. — №211(15). — С. 316-318.
Abstract: The multicomponent nitride coatings from TiZrNbAlYCr high entropy alloy (HEA) were fabricated using the vacuum-arc method. The effect of nitrogen pressure on the crystallite size, elemental and phase composition of (TiZrNbAlYCr)N coatings was investigated. A bias voltage applied to the substrate during the deposition process was −200 V. The partial nitrogen pressure was 0.05 Pa, 0.27 Pa, and 0.5 Pa. Body-centered cubic (BCC) lattice with crystallites of 15 nm in size was formed at the lowest pressure. An increase in the pressure led to the formation of the two-phase structure: BCC phase with crystallite size of 15 nm and face-centered cubic (FCC) phase with crystallite size of about 3.5 nm. The same two-phase state was found in coatings fabricated at 0.5 Pa, while the mean crystallite size was 7 nm. The maximum hardness of the deposited coatings was about 47 GPa.
URI: http://essuir.sumdu.edu.ua/handle/123456789/64237
Type: Article
Appears in Collections:Наукові видання (ЕлІТ)

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