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Title Influence of the phase and elemental compositions and defect structure on the physicomechanical properties and tribotechnical characteristics of nanostructural Ti-Hf-Si-N coatings
Authors Pohrebniak, Oleksandr Dmytrovych  
Kaverin, Mykhailo Valeriiovych
Beresnev, V.M.
ORCID http://orcid.org/0000-0002-9218-6492
Keywords superhard coatings
microhardness
tribological properties
надтверді покриття
мікротвердість
трибологічні властивості
сверхтвердые покрытия
микротвердость
трибологические свойства
Type Article
Date of Issue 2014
URI http://essuir.sumdu.edu.ua/handle/123456789/38055
Publisher Springer
License
Citation Pogrebnjak, A.D. Influence of the phase and elemental compositions and defect structure on the physicomechanical properties and tribotechnical characteristics of nanostructural Ti-Hf-Si-N coatings [Text] / A.D. Pogrebnjak, M.V. Kaverin, V.M. Beresnev // Technical Physics. — 2014. — Vol. 59, No.1. — P. 85-92.
Abstract A new approach to preparing superhard nanostructural Ti–Hf–Si–N coatings with high physico mechanical performance is developed and tested. Samples with Ti–Hf–Si–N nanocoatings obtained under different deposition conditions were investigated using nuclear physical analysis methods, namely, Ruther- ford backscattering, energy dispersive X ray analysis, secondary ion mass spectrometry, and the slow positron beam method, as well as by conducting X ray diffraction analysis and microhardness measurements and testing the tribotechnical performance of the films. It is found that the grain size varies from 3.9 to 10.0 nm depending on the bias applied to the substrate and the residual pressure in the chamber during nanocoating deposition. It is shown that the microhardness varies considerably (from 37.4 to 48.6 ± 1.2 GPa) according to the percentage and number of phases, grain size, and material transfer along nanograin boundaries and interfaces. In tribological tests of the Ti–Hf–Si–N nanocoatings, the mechanism of cohesive and adhesive fracture changes and the friction coefficient may vary from 0.46 to 0.15.
Appears in Collections: Наукові видання (ЕлІТ)

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