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    Wyświetlanie 1-3 z 3
    Tytuł:
    Structural disordering in Sn-Pb(Bi) eutectic melts induced by heating
    Autorzy:
    Mudry, S.
    Shtablavyi, I.
    Shevernoga, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/779777.pdf
    Data publikacji:
    2013
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    liquid alloys
    chemical bonding in eutectic alloys
    chemical short-range order
    Opis:
    The structure of liquid Sn0.739Pb0.261 and Sn0.57Bi0.43 eutectic alloys was studied by means of X-ray diffraction at several temperatures. Structure factors, pair correlation functions and the main structural parameters obtained on their basis were analyzed. We show that the structure of the Sn0.739Pb0.261 and Sn0.57Bi0.43 eutectic alloys is inhomogeneous and consists of different types of clusters. Upon heating the cluster structure undergoes topological and chemical disordering showing a significant dependence of structural parameters on temperature near the melting point.
    Źródło:
    Polish Journal of Chemical Technology; 2013, 15, 3; 61-64
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Liquid-solid interaction during formation of nanocomposite systems
    Autorzy:
    Shtablavyi, I.
    Mudry, S.
    Kajak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/779001.pdf
    Data publikacji:
    2012
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    composite materials
    liquid metals and alloys
    metallic powders
    microstructure
    short-range order
    Opis:
    Structural changes in mixtures of liquid Bi with small Cu and Ni particles were studied at temperatur es of 615 and 1145K. Microstructures of the composites were observed (SEM) and analyzed after treatment at different temperatures and various durations of stirring. The structure of the mixtures of Bi with Cu(Ni) particles was investigated by means of X-ray diffraction, both in the solid and liquid state.
    Źródło:
    Polish Journal of Chemical Technology; 2012, 14, 4; 42-45
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Surface diffusion and cluster formation of gold on the silicon (111)
    Autorzy:
    Plechystyy, V.
    Shtablavyi, I.
    Rybacki, K.
    Winczewski, S.
    Mudry, S.
    Rybicki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/952460.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    molecular dynamics
    surface diffusion
    clusters
    atomic monolayer
    activation energy
    dynamika molekularna
    dyfuzja powierzchniowa
    klastry
    monowarstwa atomowa
    energia aktywacji
    Opis:
    Purpose: Investigation of the gold atoms behaviour on the surface of silicon by molecular dynamics simulation method. The studies were performed for the case of one, two and four atoms, as well as incomplete and complete filling of gold atoms on the silicon surface. Design/methodology/approach: Investigations were performed by the method of molecular dynamics simulation using the Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS). MEAM potential of interatomic interaction was used for modelling. Molecular dynamic simulations were carried out in isothermal-isobaric ensemble (NpT) with a timestep 1.0 fs. Findings: As a result of studies, the preferred interaction between gold atoms and the formation of clusters at temperatures up to 800 K was revealed. Analysis of the temperature dependences of the number of large jumps of atoms made it possible to calculate the activation energy of a single jump. It was found that activation energy of single atomic displacement decreases with increasing number of gold atoms. Research limitations/implications: Only a limited number of sets of atoms were used in the study. It is possible that for another combination of atoms and a larger substrate surface, the formation of gold nanoislands on the silicon surface can be observed, which requires further research. Practical implications: The research results can be used to select the modes of gold sputtering to create gold nanoislands or nanopillars on the silicon surface. Originality/value: Computer modelling of the behaviour of gold atoms on the surface of silicon with the possibility of their self-organization and cluster formation was performed for the first time.
    Źródło:
    Journal of Achievements in Materials and Manufacturing Engineering; 2020, 101, 2; 49-59
    1734-8412
    Pojawia się w:
    Journal of Achievements in Materials and Manufacturing Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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