Перегляд за автором "Stolbovoy, V. A."

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  • Зображення мініатюри
    Публікація
    Structure and mechanical properties of multilayer coatings (TiAlCrY)N/ZrN
    (2019) Novikov, V. Yu.; Beresnev, V. M.; Kolesnikov, D. A.; Ivanov, O. N.; Lytovchenko, S. V.; Stolbovoy, V. A.; Kolodiy, I. V.; Kozachenko, A. O.; Kovaleva, M. G.; Kritsyna, E. V.; Glukhov, O. V.
    Multiperiodic nitride coatings (TiAlCrY)N/ZrN with different layer thicknesses are formed by vacuum-arc evaporation in a nitrogen atmosphere (0.2…0.6 Pa) of two targets, TiAlCrY and Zr. The targets were located along one straight line at equal distances from the perpendicular axis on which the substrates were placed. The rotation of the axis with the substrates was carried out either continuously or with a fixed delay at the evaporators. The duration of the process was chosen so that the total thickness of the coating (total thickness of the bilayers) was 10…11 μm. The effect of nitrogen pressure and modulation period on the structural-phase state, elemental composition, and mechanical properties of multilayer coatings has been studied. An increase in the partial pressure of nitrogen and, consequently, its content in the coating leads to an increase in hardness. Reducing the thickness of the layers in the coatings increases the adhesive strength of the coatings and does not have a significant effect on the microstresses in the coating.
  • Зображення мініатюри
    Публікація
    (TiZr)N/(TiSi)N Maitilayer Nanostructured Coatings obtained by Vacuum Arc Deposition.
    (2018) Lytovchenko, S. V.; Mazilin, B. A.; Beresnev, V. M.; Stolbovoy, V. A.; Kovalyova, M. G.; Kritsyna, E. V.; Kolodiy, I. V.; Glukhov, O. V.; Malikov, L. V.
    The paper investigates the structure and properties of nanoscale multilayer coatings based on (TiZr)N and (TiSi)N produced by vacuum arc technique. Also, it provides an analysis of the impact of partial pressure of nitrogen on structural and phase state of coatings. The nitride phases are strongly textured, crystallographic planes (111) of most grains are oriented parallel to the surface. Dimensions of the coherent scattering regions and values of micro-distortions of the lattice have been calculated. The hardness of coatings reached 37.1 GPa, and the adhesion fracture load exceeds 150 N. The process technology ensures high uniformity of and a low defect rate in obtained coatings.