MICROSTRUCTURE AND HIGH-HARDNESS EFFECT IN WN-BASED COATINGS MODIFIED WITH TiN AND (TiSi)N NANOLAYERS BEFORE AND AFTER HEAT TREATMENT: EXPERIMENTAL INVESTIGATION
Beresnev V.М. Lytovchenko S.V. Maksakova O.V. Pogrebnjak A.D. Stolbovoy V.А. Klymenko S.A. Khomenko L.G.
2021Begell House Inc.
High Temperature Material Processes
2021#25Issue 461 - 72 pp.
Monolayer tungsten nitride (WN) and multilayer WN/titanium nitride (TiN) and WN/titanium silicon nitride [(TiSi)N] coatings were produced by vacuum arc deposition on a Bulat-6 setup with continuous rotation of the substrate and samples. The results of the phase identification showed that the monolayer WN coating consisted of a cubic WN-β phase, while the results for the multilayer WN/TiN and WN/titanium silicon nitride (TiSi)N coatings revealed a two-phase composition: cubic TiN and cubic WN-β. The heat treatment caused volumetric changes in the coatings, namely, the titanium-containing layers were subjected to compression and compaction due to their lower density. The diffraction patterns of all of the coatings exhibited a B1 sodium chloride crystal structure with the main random orientations of the (111), (200), (220), and (311) crystal planes. Annealing the coatings at a moderate temperature led to partial elimination of genetic and technological defects, resulting in hardness enhancement of 6%–7%. The nanolayer structure with limited grains of nitrides in the nanorange was also favorable in improving the mechanical properties.
arc evaporation , hardness , heat-treatment , multilayers , nitrides , phase composition
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V.N. Karazin Kharkiv National University, 4 Svobody Square, Kharkiv, 61022, Ukraine
Sumy State University, 2 Rymskogo-Korsakova Street, Sumy, 40007, Ukraine
D. Serikbayev East Kazakhstan State Technical University, 69 Protozanova Street, Ust-Kamenogorsk, 070004, Kazakhstan
Al-Farabi Kazakh National University, 71 Al-Farabi Avenue, Almaty, 050040, Kazakhstan
National Science Center, Kharkiv Institute of Physics and Technology, 1 Akademichna Street, Kharkiv, 61108, Ukraine
V. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine, 2 Avtozavodskaya Street, Kiev, 04074, Ukraine
Poltava V.G. Korolenko National Pedagogical University, 2 Ostrogradskoho Street, Poltava, 36000, Ukraine
V.N. Karazin Kharkiv National University
Sumy State University
D. Serikbayev East Kazakhstan State Technical University
Al-Farabi Kazakh National University
National Science Center
V. Bakul Institute for Superhard Materials of National Academy of Sciences of Ukraine
Poltava V.G. Korolenko National Pedagogical University
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