High-Entropy Coatings—Structure and Properties

Metal and nitride coatings of high-entropy alloys (HEA) having different phase compositions produced by different methods were investigated. It is shown that for the high-entropy coatings is characteristic the presence of the nanostructured state, which in parallel with the cluster structure provide...

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Bibliographic Details
Published in:Journal of superhard materials 2018-03, Vol.40 (2), p.88-101, Article 88
Main Authors: Gorban’, V. F., Andreev, A. A., Shaginyan, L. R., Firstov, S. A., Karpets, M. V., Danilenko, N. I.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
High entropy alloys
Lattice parameters
Metal coatings
Modulus of elasticity
Nitrides
Physical Chemistry
Production
Properties
Structure
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Summary:Metal and nitride coatings of high-entropy alloys (HEA) having different phase compositions produced by different methods were investigated. It is shown that for the high-entropy coatings is characteristic the presence of the nanostructured state, which in parallel with the cluster structure provides hardness for metal coatings ~ 10–19 GPa; for nitride coatings are characteristic 50–60 GPa and the modulus of inelastic buckling more than 300 MPa. The relation of the lattice parameters, which are defined experimentally, to the parameter of the lattice of the most refractory metal in the HEA reflects the level of the elastic modulus relative to the theoretically possible both in the cast HEA and in metal coatings on their base.
ISSN:1063-4576
1934-9408
1934-9408
DOI:10.3103/S106345761802003X