STRUCTURE, COMPOSITION AND MECHANICAL PROPERTIES OF MULTI-LAYER VACUUM-ARC NITRIDE COATINGS
DOI:
https://doi.org/10.20998/2078-7405.2022.97.02Keywords:
vacuum-arc technology, multilayer nitride coatings, composition and mechanical properties of coatings, PVD coatings, PCBN cutting toolAbstract
The conditions of application of multilayer vacuum-arc nitride coatings on a substrate made from polycrystalline cubic boron nitride (PCBN) are considered using the samples of (TiAlCrY)N/ZrN, (TiZr/TiSi)N, (TiAlSiY)N/CrN compositions. A schematic diagram of a vacuum-arc installation for applying similar coatings is presented, and the technological conditions of coating formation are considered. The structure and composition of the coatings were studied during diffractometric studies, and the performance of coated tools was examined when turning hardened steel. A large amount of the droplet phase in the (TiAlCrY)N/ZrN coating was established. The lattice parameters of two nitrides with an fcc crystal lattice were determined: ZrN – 4.590 Å, TiAlCrYN – 4.203 Å. CSR (coherent-scattering region) of the ZrN phase is 5.4 nm at the microstrain level ε = 4.7910-3. High homogeneity and low defects in the thickness of the (TiZr)N/(TiSi)N coating were established – the amount of droplet phase is insignificant. The CSR of the coating is 24.2 nm at the level of microstrain ε = 5.7610-3, and the predominant texture orientation is (111). A small amount of the droplet phase was found in the (TiAlCrY)N/CrN coating. Both coating layers are characterized by the formation of phases with a cubic (fcc) crystal lattice, and a strong (111) texture occurs. The crystallographic planes (111) of the phase grains are mainly oriented parallel to the coating interface. The size of the CSR is 14.6 nm. It is shown that multilayer vacuum-arc coatings lead to an increase in the tool life of PCBN cutting tools by reducing the effect of adhesive sticking of the processed material and reducing the intensity of chemical interaction in the cutting zone.
References
Selinder, T. Performance of PVD TiN/TaN and TiN/NbN superlattice coated cemented carbide tools in stainless steel machining / T. Selinder, M. Sjöstrand, M. Nordin et al. // Surf. Coat. Technol. – 1998. – vol. 105. – № 1–2. – pp. 51–55; 2. Caliskan, H. Study of nanolayer AlTiN/TiN coating deposition on cemented carbide and its performance as a cutting tool / Н. Caliskan, Е. Altas, Р. Panjan // J. Nano Res. – 2017. – vol. 47. – pp. 1–10;
Veprek, S. Different approaches to superhard coatings and nanocomposites, / S. Veprek, М. Veprek-Heijman, Р. Karvankova, J. Prochazka //ThinSolidFilms. – 200. – vol. 476. pp. 1–29;
Hultman, L. Synthesis, structure, and properties of super-hard superlattice coatings, in Nanostructured Coatings / L. Hultman. – New York: Springer-Verlag, 2006. – pp. 539–554;
Vereschaka, A.A. Influence of nanolayer thickness on the performance properties of multilayer composite nano-structured modified coatings for metal-cutting tools / A.A. Vereschaka, J.I., Bublikov, N.N., Sitnikov et al. // Int. J. Adv. Manuf. Technol. – 2018. – vol. 95. – pp. 2625–2640;
Uhlmann, E. Investigation of wear resistance of coated PcBN turning tools for hard machining / Е. Uhlmann, Н. Riemer, D. Schröter et al. // Int. J. Refract. Met. Hard Mater. – 2018. – vol. 72. – pp. 270–275;
Zhu, D. Tool wear characteristics in machining of nickel-based superalloys / D. Zhu, Х. Zhang, Н. Ding // Int. J. of Mach. Tools and Manuf. – 2013. – 64. – pp. 60–77;
Manokhin, A.S. Wear Rate of PcBN Cutting Tools Equipped with Nanolayered Protective Coatings / A.S. Manokhin, S.A. Klimenko, V.M. Beresnev et al. // J. of Superhard Mat. – 2020. – vol. 42, № 6. – pp. 423–431;
Manokhin, A.S. Promising types of coatings for PCBN tools / A.S. Manokhin, S.A. Klimenko, S.An.Klimenko, V.M. Beresnev // J. of Superhard Mat. – 2018. – vol. 40, № 6. – pp. 424–431;
Kauffmann, F. Mirostructural size effects on the hardness of nanocrystalline TiN/amophous-SiNx coatings prepared by magnetronsputtering / F. Kauffmann, G. Dehm, V. Schier et al. // Thin Solid Films. – 2005. – vol. 473. – pp. 114–122;
Dobrzański, L.A. Structure and mechanical properties of gradient PVD coatings / L.A. Dobrzański, L.W. Żukowska, J. Mikuła et al. // J. of Mat. Proc. Technol. – 2008. – vol. 201, №. 1–3;
Nanostructured Coatings for High Performance Tools. Reprint // Werkzeug Technik. – 2003. – № 77;
Wang, Chen. Toughness enhancement of nanostructured hard coatings: Design strategies and toughness measurement techniques / Chen Wang, Kaicheng Shi, Cameron Gross et al. // Surf. and Coat. Technol. – 2014. – vol. 257. – pp. 206–212;
Manokhin, A. To the Question of the Mechanism of the Effect of Coating on the Durability of Tools from PCBN / A. Manokhin, S. Klymenko, V. Beresnev et al. // Advanced Manufacturing Processes. – Springer International Publishing, 2020. – pp. 206–215;
Franz, R. Vanadium containing self-adaptive low-friction hard coatings for high-temperature applications : A review / R. Franz, C. Mitterer // Surf. and Coat. Technol. – 2013. – vol. 228. – pp. 1–13;
Tadahiro, W. Tool wear of (Ti, Al) N-coated polycrystalline cubic boron nitride compact in cutting of hardened steel / W. Tadahiro, H. Hiroyuki // IOP Conf. Ser. : Mat. Sci. Eng. – 2017.– 264. – pp. 1–8.
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