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Simulation of the influence of alloying elements on the characteristics of the formation of vacuum-arc nitride coatings
Kharkiv Polytechnic Institute, Ukraine.
Kharkiv Polytechnic Institute, Ukraine.
Kharkiv Polytechnic Institute, Ukraine.
Kharkiv Polytechnic Institute, Ukraine.
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2023 (English)In: Functional Materials, ISSN 1027-5495, Vol. 30, no 4, p. 597-605Article in journal (Refereed) Published
Abstract [en]

An analysis of trends in the interaction of elements of the Periodic Table was carried out and the results obtained were compared with a model material (namely with a TiN coating); predictions were made for structure formation in vacuum-arc nitride coatings and modeling of the properties of the final coating depending on the composition and deposition conditions This made it possible to explain changes in structural characteristics and mechanical properties in the presence of weaker and/or stronger nitride-forming elements in nitride coatings. Under all deposition conditions and different elemental compositions, single-phase crystalline coatings were obtained. The addition of Mo to the coating increases the lattice period of TiMoN. It was es-tablished that the high-entropy coatings (TiVZrNbHf)N and (TiVZrNbHfTa)N are single-phase with an fcc lattice. The high entropy of the system prevents the formation of intermetallic com-pounds. The coatings are polycrystalline with a crystallite size of 20-23 nm. It has been estab-lished that high-entropy coatings obtained at a nitrogen atmosphere pressure of 0.26 Pa and a constant bias potential of -200 V have the highest hardness value of 53-55 GPa. The theoretical model used to analyze the characteristics of high-entropy alloys and nitride coatings based on them has been confirmed experimentally.

Place, publisher, year, edition, pages
National Academy of Sciences of Ukraine , 2023. Vol. 30, no 4, p. 597-605
Keywords [en]
Coatings, High-entropy alloys (HEA), Structural engineering, Alloying, Multi-component nitrides, Texture
National Category
Metallurgy and Metallic Materials Manufacturing, Surface and Joining Technology
Research subject
Mechanical Engineering; Materials Engineering
Identifiers
URN: urn:nbn:se:kau:diva-98237ISI: 001132122200016Scopus ID: 2-s2.0-85186879609OAI: oai:DiVA.org:kau-98237DiVA, id: diva2:1833794
Note

10.15407/fm30.04.597

Available from: 2024-02-01 Created: 2024-02-01 Last updated: 2024-04-04Bibliographically approved

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ScopusVol.30, No.4

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Tkachuk, M. M.

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Department of Engineering and Physics (from 2013)
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