Кафедра архітектури та містобудування

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https://elar.khmnu.edu.ua/handle/123456789/8

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Перегляд Кафедра архітектури та містобудування за Автор "Mashovets, Natalia"

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  • Ескіз
    Документ
    Behavior of partial slip in contact zone ball and flat surface
    (2012) Shalapko, Yuriy; Mashovets, Natalia; Musiał, Janusz; Kałaczyński, Tomasz
    У статті досліджується поведінка сталевих поверхонь при субмікронних циклічних прослизання. Визначено міра активації поверхонь при динамічному контактуванні.
  • Ескіз
    Документ
    LEED study of Ni (1 0 0) and (1 1 1) surface damage caused by Ar‘ ion bombardment with low energy and small doses
    (Vacuum, 2000-04) Vasylyev, Mykhaylo; Blaschuk, A.G.; Mashovets, Natalia; Vilkova, Natalia
    Surface damage formation on the Ni (1 0 0) and Ni (1 1 1) surfaces induced by Ar‘ ion bombardment at low energy (0.1}1.2 keV) and small doses ((5]1015 ion/cm2) was studied with LEED. The degradation of the di!raction spot intensities was measured directly during ion bombardment. Using the procedure of Jacobson and Wehner for description of the exponential intensity/dose function, the mean area of damage per incident ion was determined. The experimental results have con"rmed that partial annealing of the surface damage takes place at room temperature during ion bombardment. An exponential relationship observed between point defect concentration and annealing time at higher temperature indicated a "rst- order reaction. The activation energies for Ni (1 0 0) and Ni (1 1 1) surfaces were determined. ( 2000 Elsevier Science Ltd. All rights reserved.
  • Ескіз
    Документ
    Some surface layer features after abrasive-water jet cutting
    (2012) Matuszewski, Maciej; Musiał, Janusz; Styp-Rekowski, Michał; Shalapko, Yuriy; Mashovets, Natalia
    In presented paper results of comparative studies into the roughness (very significant tribological factor) of surfaces after cutting using the AWJM method were presented. Cutting was performed on samples made of three materials: quenched and tampered alloy steel (1.2080), plastic (polyamide PA6) and mineral material (syenite). Variable parameters in the cutting process included: jet pressure and feed. As a result of measurements involving selected roughness parameters (Ra, Rz and Rq)It was discovered that the majority of variable factors had a significant effect on the cut surface roughness. It was also demonstrated that the contact method measurements cannot be performed with regard to plastics because the results are characterised by a very great scatter of results values, making them unreliable.
  • Документ
    Surface modification of titaniumium using the complex technologies
    (2013-04-25) Shalapko, Yuriy; Mashovets, Natalia; Radek, Norbert; Kałaczyński, Tomasz
    In this paper the results of experimental research of microhardness, thickness, phase composition and wear resistance of pure titanium surface layer after laser treatment with different regimes and next nitriding in a glow discharge in hydrogen-free medium were presented.
  • Документ
    Surface modification of titaniumium with the use of complex technologies
    (2013-04-25) Shalapko, Yuriy; Mashovets, Natalia; Radek, Norbert
    The results of experimental studies of the surface layer of Titaniumium VT1 -0 (99.24 - 99.7%) after laser treatment and subsequent nitriding in a glow discharge in medium free from hydrogen was presented.