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Information × Registration Number 0219U001939, 0118U003840 , R & D reports Title Physicotechnical foundations of formation of multicomponent nanostructured functional coatings popup.stage_title Head Chugai Oleg Mikolayovich, Доктор технічних наук Registration Date 29-03-2019 Organization National Aerospace University named by N.E.Zhukovsky "Kharkov aviation institute" popup.description2 COATINGS, CRYSTALS, RESEARCH METHODS, MATHEMATICAL MODELING, SURFACE MORPHOLOGY, ELECTROPHYSICAL PROPERTIES. The object of study is the morphology of the surface, the crystal structure and the physical properties of a substance in the form of a coating. The purpose of the work is to create the physico-technical basis for the formation of multicomponent nanostructured functional coatings. Research methods - mathematical modeling, electron microscopy, energy-dispersion electron analysis, electrical spectroscopy. The results of research and their novelty: 1. By the method of mathematical modeling, the configuration and magnitude of the magnetic field induction for various models of the working chamber of the technological installation, which provides the coating by the ion-plasma method, is established. The uniformity of the field in the direction of the axis of the coils generating it is revealed. 2. It was established that the functional stability of the plasma generator control system with partitioned cathode nodes in the mode of ion-plasma deposition of multicomponent nanostructured materials depends on the method of binary transmission of command signals to the ballast resistor block. Such a distributed system makes it possible not to overload the installation information channels. The calculated tolerances of the values of current and voltage make it possible to control the operating modes of the plasma generator. 3. The influence of the measurement conditions of electric capacitance and the tangent of dielectric loss angle with the help of the LCR-819 on the measurement accuracy is investigated. The necessity of using an uninterruptible power supply to achieve the best metrological characteristics of measurements is substantiated. 4. New methods of detecting electrical inhomogeneities in semi-insulating cylindrical specimens and non-contact measurement of the electrical resistivity of such specimens in the form of a plate are proposed. 5. Methods for identifying electrical inhomogeneities were tested on high-entropy alloys Ti-V-Zr-Nb-Hf. It has been established that these materials have a complex surface morphology, on which inclusions of various composition, size and shape are found. For the first time, it was established that the study of these materials in an alternating electric field using a system of flat stationary and movable cylindrical electrodes reveals areas of abrupt changes in electrical resistivity and quality of the sample. Moreover, the latter occur much more frequently. Product Description popup.authors Іщенко Є.І. Абашин С.Л. Волошин О.О. Колесник В.П. Кочук С.Б. Курєннов С.С. Литовченко Л.В. Олійник С.В. Полубояров О.О. Слюсар Д.В. Степанушкін М.П. Фірсов С.М. popup.nrat_date 2020-04-02 Close