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Influence of the Thickness of Multilayer Composite Nano-Structured Coating Ti–TiN–(Ti,Al,Si)N on the Tool Life of Metal-Cutting Tools and the Nature of Wear

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VTO Department, Moscow State Technological University STANKIN, Moscow 127994, Russia
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Department of Solid State Physics and Nanosystems, National Research Nuclear University MEPhI, Moscow 115409, Russia
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Materials Science and Metallurgy Shared Use Research and Development Center, National University of Science and Technology MISiS, Moscow 119049, Russia
4
Institute of Design and Technology Informatics (IKTI) RAN, Moscow 127055, Russia
*
Author to whom correspondence should be addressed.
Coatings 2019, 9(11), 730; https://doi.org/10.3390/coatings9110730
Received: 13 October 2019 / Revised: 29 October 2019 / Accepted: 1 November 2019 / Published: 5 November 2019
This article discusses the influence of the thickness of a nano-structured wear-resistant layer of the Ti–TiN–(Ti,Al,Si)N multilayer composite coating on its mechanical and performance properties. The study was focused on the coatings with the following thicknesses of its wear-resistant layers: 2, 3.5, 5, 7, 11, and 15 μm. The relation between the thickness of a wear-resistant layer and the time of its deposition was investigated, and the effect of the above thickness on hardness and wear resistance in scratch testing was considered. Cutting tests were conducted in turning steel C45 with carbide inserts with the coatings under study at various cutting speeds (vc = 250, 300 and 350 m/min). The study found the value of thickness of wear-resistant layer providing the longest tool life at various cutting speeds. The differences in the nature of wear for the coatings with various thicknesses of wear-resistant layers were considered. View Full-Text
Keywords: wear-resistant coatings; coating thickness; wear; tool life wear-resistant coatings; coating thickness; wear; tool life
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Vereschaka, A.; Grigoriev, S.; Sitnikov, N.; Aksenenko, A.; Milovich, F.; Andreev, N.; Oganyan, G.; Bublikov, J. Influence of the Thickness of Multilayer Composite Nano-Structured Coating Ti–TiN–(Ti,Al,Si)N on the Tool Life of Metal-Cutting Tools and the Nature of Wear. Coatings 2019, 9, 730.

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