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Open AccessArticle

Influence of the Thickness of a Nanolayer Composite Coating on Values of Residual Stress and the Nature of Coating Wear

1
VTO Department, Moscow State Technological University STANKIN, Moscow 127994, Russia
2
Department of Theoretical Mechanics, Belarusian National Technical University, Minsk 220013, Belarus
3
Department of Solid State Physics and Nanosystems, National Research Nuclear University MEPhI, Moscow 115409, Russia
4
Baikov Institute of Metallurgy and Materials Science RAS, Moscow 119334, Russia
5
Institute of Design and Technology Informatics (IKTI) RAN, Moscow 127055, Russia
6
Central Research Institute of Machine Building Technology (PJSC SPA “CNIITMASH”), Moscow 115088, Russia
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(1), 63; https://doi.org/10.3390/coatings10010063
Received: 12 November 2019 / Revised: 19 December 2019 / Accepted: 8 January 2020 / Published: 10 January 2020
(This article belongs to the Special Issue Stress in Thin Films and Coatings)
The article discusses the influence of the thickness of the wear-resistant layer of the Zr-ZrN-(Zr,Al,Si)N nanolayer composite coating on the values of residual stress and the nature of coating wear. The study focused on coatings with wear-resistant layer thicknesses of 2.0, 4.3, 5.9, and 8.5 µm, deposited using filtered cathodic vacuum arc deposition (FCVAD) technology. The X-ray diffraction (XRD) method based on the anisotropy of the elasticity modulus was used to find the values of the residual stress. The nature of the formation of interlayer delamination under the influence of residual compressive stress was studied using a scanning electron microscope (SEM). When the wear-resistant layers had a thickness of 2.0–5.9 μm, tensile stress formed, which decreased with an increase in the thickness of the coating. When the thickness of a wear-resistant layer was 8.5 μm, compressive stress formed. Under the action of compressive stress, periodic interlayer delamination formed, with a pitch of about 10 binary nanolayers. A mathematical model is proposed to describe the nature of the formation of interlayer delamination under the influence of compressive residual stress, including in the presence of a microdroplet embedded in the coating structure. View Full-Text
Keywords: nanolayer composite coating; filtered cathodic vacuum arc deposition (FCVAD); X-ray diffraction (XRD); residual stress; wear-resistant coating nanolayer composite coating; filtered cathodic vacuum arc deposition (FCVAD); X-ray diffraction (XRD); residual stress; wear-resistant coating
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Vereschaka, A.; Volosova, M.; Chigarev, A.; Sitnikov, N.; Ashmarin, A.; Sotova, C.; Bublikov, J.; Lytkin, D. Influence of the Thickness of a Nanolayer Composite Coating on Values of Residual Stress and the Nature of Coating Wear. Coatings 2020, 10, 63.

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