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Beresnev, Vyacheslav M.
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Topics
Publications (6/6 displayed)
- 2023INFLUENCE OF ANNEALING ON THE PHYSICAL AND MECHANICAL PROPERTIES OF (TiSi)N/CrN MULTILAYER COATINGS PRODUCED BY CATHODIC ARC PHYSICAL VAPOR DEPOSITIONcitations
- 2018Structural and mechanical characterization of (TiZrNbHfTa)N/WN multilayered nitride coatingscitations
- 2018A new type of (TiZrNbTaHf)N/MoN nanocomposite coating: Microstructure and properties depending on energy of incident ionscitations
- 2018Nano-multilayered coatings of (TiAlSiY)N/MeN (Me=Mo, Cr and Zr): Influence of composition of the alternating layer on their structural and mechanical propertiescitations
- 2018Superhard CrN/MoN coatings with multilayer architecturecitations
- 2017Synthesis and characterization of nitride multilayerd coatings based on refractory metalscitations
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article
Superhard CrN/MoN coatings with multilayer architecture
Abstract
<p>Main regularities of the formation of microstructure and properties of multilayer nanostructured CrN/MoN films with periodically changing architecture of layers were considered. Coatings were fabricated by vacuum-arc evaporation of the cathodes (Arc-PVD) in nitrogen atmosphere (p<sub>N</sub>was 0.4, 0.09 and 0.03 Pa). CrN and γ-Mo<sub>2</sub>N nitride phases with fcc lattices and a small volume of metastable MoN<sub>x</sub>cubic phase were formed in the films at p<sub>N</sub>= 0.4 Pa. The decrease of p<sub>N</sub>to 0.09 Pa causes the formation of β-Cr<sub>2</sub>N hexagonal phase. Preferential crystallographic orientation changes from [311] to [111] and [200] when bias voltage U<sub>b</sub>is −20, −150 and −300 V respectively. The nanocrystallites size in coatings with bilayer thickness λ = 44 nm decreases to 5.8 nm. The microdeformation grows from 0.4 to 2.3% when U<sub>b</sub>changes to −20 V. Coatings show high hardness of 38–42 GPa and H/E = 0.107. In a couple with results of tribological tests, coatings demonstrate strong wear resistance, which makes them appropriate and promising for industrial applications as protective ones. The effect of deposition conditions (p<sub>N</sub>, U<sub>b</sub>, λ) on composition, structure, hardness, toughness and wear resistance was studied to achieve superior mechanical and physical properties of coatings with long lifetime in harsh environment.</p>