Перегляд за Автор "Petrushenko, S.I."
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Документ Effect of temperature on the pores growth in the polycrystalline films of fusible metals(ННЦ "Харьковский физико-технический институт", 2014) Dukarov, S.V.; Petrushenko, S.I.; Sukhov, V.N.; Churilov, I.G.The paper presents the results of study through porosity in polycrystalline films of lead, tin and indium deposited on amorphous carbon substrate. It is established that the heating of film exponentially increases of the average size of through pores and do not leads to an increase of their concentration, which is practically independent of the temperature until to the melting point. We have determined the activation energy of the surface self in the films of these metals. Приведены результаты исследования сквозной пористости в поликристаллических плёнках свинца, олова и индия, напыленных на аморфные углеродные подложки. Установлено, что нагрев плёнок вызывает экспоненциальное увеличение среднего размера сквозных пор и не приводит к увеличению их концентрации, которая практически не зависит от температуры вплоть до температуры плавления. Определена энергия активации поверхностной самодиффузии в плёнках этих металлов.Документ In situ research on temperature dependence of the lattice parameters of fusible metals in thin Cu-Pb and Cu-Bi films(STC “Institute for Single Crystals”, 2016) Dukarov, S.V.; Petrushenko, S.I.; Sukhov, V.N.; Skryl, O.I.The results of in situ electron diffraction study of the temperature dependence of the lattice parameter of the fusible component in the Cu-Pb and Cu-Bi two-layer films are presented. It was found that at room temperature, the parameters of the Pb and Bi crystal lattices are agreed with tabular data, however, with temperature increasing one can observe the deviation from the values corresponding to bulk samples. This indicates a significant increase in the solubility of the components in the films under study. In the Cu-Pb films according to the estimation made by assuming a linear dependence of the lattice parameter of the solid solution from concentration, copper solubility in the solid lead near the eutectic temperature is about 0.8 at%, which is much greater than the value known for bulk samplesДокумент Stability limits of the liquid phase in the layered Mo/Pb/Mo, Mo/Bi/Mo and Mo/In/Mo film systems(2016) Petrushenko, S.I.; Dukarov, S.V.; Sukhov, V.N.The results of the study of supercooling of the fusible metals films between the continuous layers of molybdenum during the crystallization are given. Due to an original in situ technique based on the changes of resistance of samples during heating and cooling directly in the vacuum chamber the values of supercooling in Mo/Pb/Mo, Mo/Bi/Mo, Mo/In/Mo films are determined and the influence of the morphological structure of the bismuth inclusions on the temperature and nature of its supercooled melt crystallization has been found. The substrate temperature change during the condensation of samples, accompanied by a corresponding change in their microstructure, allows realizing both avalanche and diffuse crystallization and changing of supercooling value in the range of 60 to 180 K in Mo/Bi/Mo films.Документ Supercooling during crystallization of fusible metal particles in multilayer “carbon-metal-carbon” films(National Science Center "Kharkov Institute of Physics and Technology", 2016) Petrushenko, S.I.; Dukarov, S.V.; Sukhov, V.N.The results of studies of phase melting-crystallization transitions in thin films of fusible metals between thicker layers of amorphous carbon are given. It has been found that, due to poor wetting in contact systems under study, thin layers of fusible metals decompose into separate islands while first heated. Such films are a model of the system “fusible particles in the refractory matrix”. Using two independent in situ techniques (electrical resistance measuring and electron-diffraction studies during heating and cooling) values of supercooling during crystallization of liquid phase nanoparticles in multilayer C-Bi-C, C-Pb-C, C-Sn-C films, equal to 115, 135 and 160 K, respectively have been obtained. - - - - - - - - - - - Приводятся результаты исследований фазовых переходов плавлениекристаллизация в тонких пленках легкоплавких металлов, находящихся между более толстыми слоями аморфного углерода. Установлено, что вследствие плохого смачивания в исследуемых контактных системах уже при первом нагреве тонкие слои легкоплавких металлов распадаются на отдельные островки. Такие пленки представляют собой модель системы «легкоплавкие частицы в тугоплавкой матрице». С помощью двух независимых in situ методик (измерения электросопротивления и электронографических исследований в процессе нагрева и охлаждения) получены величины переохлаждения при кристаллизации наночастиц жидкой фазы в многослойных пленках (C-Bi-C, C-Pb-C, C-Sn-C), равные 115, 135 и 160 K соответственно.