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Title | The influence of nitrogen pressure on the fabrication of the two-phase superhard nanocomposite (TiZrNbAlYCr)N coatings |
Authors |
Pohrebniak, Oleksandr Dmytrovych
Smyrnova, Kateryna Vasylivna Kravchenko, Yaroslav Olehovych Beresnev, V.M. Zukowski, P.V. Bondarenko, G.G. |
ORCID |
http://orcid.org/0000-0002-9218-6492 http://orcid.org/0000-0001-8993-996X http://orcid.org/0000-0003-0984-1298 |
Keywords |
Microstructure Multielement Chemical composition Superhardness Crystallites |
Type | Article |
Date of Issue | 2018 |
URI | http://essuir.sumdu.edu.ua/handle/123456789/64237 |
Publisher | Elsevier |
License | |
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. |
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File | Size | Format | Downloads |
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Pogrebnjak_influence.pdf | 885.21 kB | Adobe PDF | 2085362739 |
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