Abstract
The wear-resistant coatings formed by the vacuum ion-plasma codeposition of titanium and carbon have been studied in this work. Single-layer and multilayer coatings with the systematically repeated [(Ti1 – xCx/a-C] pair are deposited onto P8M5 and 18KhN10T steel substrates. The highest erosion resistance is inherent in the multilayer [Ti0.2C0.8/a-C]40 coating with a layer thickness of 25 nm. The erosion wear rate of this coating is 1.6–1.8 times lower than the wear rate of the single-layer а-С and Ti0.2C0.8 coatings. The wear of [Ti0.2C0.8/a-C]40 occurs layer by layer without crumbling of individual square sections of the coating, thus increasing its service life. The interphase boundaries in the Ti0.2C0.8 composite layer, as well as the Ti1 ‒ xCx → а-С interface boundaries, serve as a barrier for the propagation of microcracks, decreasing the probability of macrocracking, which destroys the continuity of a coating.
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Funding
This study was performed within the state task of the Ministry of Education and Science of Russia (project “Function” no. AAAA-A19-119012990095-0) under partial financial support from the Russian Foundation for Basic Research (project no. 20-48-660065).
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Translated by E. Glushachenkova
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Rubshtein, A.P., Vladimirov, A.B. & Plotnikov, S.A. Specific Features of the Erosion Wear of Coatings with a Ti1 – xCx–Diamond-Like Carbon Structure Forming Pair (х = 0.2, 0.8). Phys. Metals Metallogr. 121, 1203–1210 (2020). https://doi.org/10.1134/S0031918X20120121
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DOI: https://doi.org/10.1134/S0031918X20120121