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    Wyświetlanie 1-4 z 4
    Tytuł:
    Modeling of Processes Taking Place during Powder Coating Treatment by an Electron Beam or a Plasma Jet
    Autorzy:
    Alontseva, D.
    Krasavin, A.
    Kolesnikova, T.
    Russakova, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1365754.pdf
    Data publikacji:
    2014-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    02.60.Cb
    02.30.Nw
    44.05.+e
    Opis:
    This paper considers the problem of finding the temperature field in two-layer metallic materials heated by a moving source of radiation. It describes developed by the authors numerical method for solving the problem of heating a two-layer plate by a moving axially symmetric surface heat source with regard to the function of distribution of the power density of the beam for which the program of computation in $C^{++}$ was implemented. The calculation results were used for selecting the optimal parameters (speed and power density of the source) of modifying radiation of protective powder coatings on steel substrates.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 6; 1275-1279
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modification of Ni-Based Plasma Detonation Coatings by a Low-Energy DC E-Beam
    Autorzy:
    Alontseva, D.
    Krasavin, A.
    Pogrebnjak, A.
    Russakova, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1400454.pdf
    Data publikacji:
    2013-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.15.-z
    81.07.-b
    68.47.Gh
    Opis:
    The paper presents the study of Ni-based coatings deposited by plasma detonation onto a steel substrate after direct current low-energy electron beam irradiation and proposes explicit parameters of the electron beam for modification of coatings by irradiation. The choice of irradiation modes is based on the calculation of the temperature profile in the Ni-Fe two-layer absorbents using numerical simulation methods. It was found that the exposure of coatings to irradiation according to the recommended modes leads to the evolution of the structural-phase state of coatings and substantial improvement of performance properties of modified surfaces. The wear resistance of modified surfaces increases 3 times, the microhardness increases on the average 25%.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 5; 867-870
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Plasma-Assisted Automated Precision Deposition of Powder Coating Multifunctional Systems
    Autorzy:
    Alontseva, D.
    Krasavin, A.
    Prokhorenkova, N.
    Kolesnikova, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030204.pdf
    Data publikacji:
    2017-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    microplasma
    structure phase composition
    powder coating
    multifunctional systems
    Opis:
    The paper describes the results of developing a new technology of precision application of powder coating multifunctional systems to protect surfaces of industrial products using the microplasma material processing complex with the assistance of an industrial robot. The choice of components for developing the multifunctional powder coating systems and the trajectory of the plasma source and processing modes is made on the basis of optimized condition identified by initial experimentation and mathematical modelling. The use of a robot with a programmable controller provides high accuracy and performance of coating deposition onto the parts with a complex shape. The application of this technology allows obtaining multifunction systems of powder coatings with a predicted nanostructure and a complex set of properties such as microhardness and corrosion resistance. These systems are designed to protect friction surfaces and cutting tools, as well as to protect and restore the surface of components operating in corrosive environments and at high temperatures.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 2; 233-235
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Comparative Study of the Structure and Phase Composition of Ni-Based Coatings Modified by Plasma Jet or Electron Beam
    Autorzy:
    Alontseva, D.
    Russakova, A.
    Krasavin, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398796.pdf
    Data publikacji:
    2016-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.15.-z
    81.07.-b
    68.47.Gh
    Opis:
    The paper deals with the results of the comparative study into the structure and phase composition, as well as some properties (microhardness, corrosion resistance) of Ni-based powder coatings before and after their modification by DC electron beam or DC pulse plasma jet, according to the modes recommended on the basis of model calculations of the temperature profiles at irradiation. The transmission electron microscopy and X-ray analysis have revealed that irradiation leads to an increase in the volume fraction of reinforcing nanosized intermetallic components in the coatings. There were established certain similarities and differences in the structure and properties of the coatings modified by different types of irradiation. The microhardness of the irradiated coatings has increased in both cases along with the growth of the volume fraction of the CrNi₃ particle phase. However, it was found that the diffusion zone in the coatings modified by plasma jet is higher than that of the coatings modified by electron irradiation. The coating surface melted by the electron beam has a marked reduction of its roughness and better homogenization of the microstructure therefore demonstrating better adhesion and corrosion resistance.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 4; 838-841
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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