Problems of Tribology = Проблеми трибології - 2022 рік

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https://elar.khmnu.edu.ua/handle/123456789/11892

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Перегляд Problems of Tribology = Проблеми трибології - 2022 рік за Автор "Kaplun, P.V."

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  • Ескіз
    Документ
    Investigation of corrosion and wear resistance of steels nitrided in a glow discharge in distilled water
    (Хмельницький національний університет, 2022) Rudyk, O.Yu.; Kaplun, P.V.; Golenko, K.E.; Honchar, V.A.; Poberezhnyi, M.M.; Рудик, О.Ю.; Каплун, П.В.; Голенко, К.Е.; Гончар, В.А.; Побережний, М.М.
    The article is devoted to the study of corrosion resistance and wear resistance (sliding friction) of unhardened and glow discharge nitrided (ion or ion-plasma nitriding) structural steels 20, 45, 45X and 38X2МЮА in distilled water. The influence of temperature (T = 793 –873 K), the composition of the saturating mixture (nitrogen N2, argon Ar and propane C3H8) and its pressure (Р = 80 –450 Pa), the duration of the process on the structure and phase composition of the nitrided layers was studied (carried out using metallographic and X-ray structural analyses). A comparison of the physical and mechanical characteristics of the surface layer of unhardened and nitrided steels before and after the tests was carried out and it was concluded that nitrided steels have an increased service life due to greater hardness, corrosion resistance and wear resistance. Itis recommended to increase the corrosion resistance of the studied steels in distilled water, to carry out their ionic nitriding in a nitrogen-containing atmosphere, and to increase wear resistance - in a carbon-containing atmosphere (carbonitriding).
  • Ескіз
    Документ
    Microstructure and wear resistance of modified surfaces obtained by ion-plasma nitriding of 40ХН2МА steel
    (Хмельницький національний університет, 2022) Smyrnov, I.V.; Chornyi, A.V.; Lysak, V.V.; Drobot, O.S.; Kaplun, P.V.; Poberezhnyi, M.M.; Rutkovskyi, A.V.; Смирнов, І.В.; Чорний, А.В.; Лисак, В.В.; Дробот, О.С.; Каплун, П.В.; Побережний, М.М.; Рутковський, А.В.
    The article is devoted to the analysis of wear resistance of diffusion coatings, which were applied by ionic nitriding on steel 40ХН2МА. There is a comparison of the technological efficiency of the results. The parameters of technological modes used in the process of application are presented, with the list of equipment and stages. The authors conduct the comparative analysis of chemical composition, microstructure, metallographic and tribological studies. They study the wear kinetics of 40ХН2МА steel with nitrided coatings as well as provide practical recommendations on the use of hardened samples in dry friction conditions.
  • Ескіз
    Документ
    Study of the kinetics of wear of steels from the point of view of the provisions of the adhesive-hydrodynamic theory of wear
    (Хмельницький національний університет, 2022) Poberezhnyi, M.M.; Kaplun, P.V.; Kolenov, S.O.; Побережний, М.М.; Каплун, П.В.; Каленов, С.О.
    The article is devoted to the study of wear resistance of the surface layer of steels 40X and ШX15, when rubbed in oil I-20. A comparison of the surface layer of samples of raw and nitrided steels, before and after the tests. The study of the fine microstructure of the samples with the help of the LDFP microscope, allowed us to conclude that the samples that were subjected to ionic nitriding, improved roughness. In turn, increased the area of linear contact, reduced contact load. The graphic dependence of roughness indicators is constructed. After testing, we can conclude that nitrided steel has a long service life, namely high hardness, resistance to abrasion, durability and corrosion resistance. The mechanism for obtaining increased resources needs further study