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Information × Registration Number 0220U002020, 0118U002044 , R & D reports Title Development of material science basics of applyingf high-performance ion-plasma technologies for three-level surface engineering popup.stage_title Head Sobol Oleg, Registration Date 10-02-2020 Organization The Kharkov state polytechnical university popup.description2 Object of research Fundamental processes of formation of phase and stress-strain states, elemental distribution, structure and physical-mechanical characteristics for three types of ion-plasma modification at different levels. The purpose of the work: Development of scientific material science bases of structural engineering for three types of newest high-intensity ion-plasma technologies of surface modification at different levels (basis without thickness change, basis with thickening and thickening due to the application of multi-element coating) for obtaining high mechanical properties that are critical for the efficiency of materials in general and special engineering. Methods of research - methods of X-ray diffractometry, raster and transmission electron microscopy of high-resolution, X-ray fluorescence elemental analysis, measuring the strength and physical-mechanical properties. The explanation of the processes of coatings phase formation at MDO - treatment in alkaline - silicate electrolyte is offered. It has been shown that for the practical use, those alloying elements that influence the destabilization of -Al2O3, which provide the formation of the -Al2O3 (corundum) phase, should be selected. At the first level of surface modification, it is shown that the presence in the micro-structure of samples of steel after complex ion nitriding with the application of tempering and tempering of the phase, together with the values of hardness at deep nitriding is sufficient for the high performance properties of the material (high impact toughness combined with high enough hardness). It is established that the supply of high-voltage pulse bias potential increases the mobility of particles and leads to relaxation processes. The latter provides a reduction in the growth compression stresses and rasorientation of the crystalline grains at a small constant bias potential. The causes of structural changes observed in titanium nitride coatings, nitrides of multielement and multilayer composites based on them are analyzed based on the mechanism of formation of surface layers of vacuum-arc coatings under conditions of implantation processes stimulated by the supply of a negative potential to the substrate. Product Description popup.authors Андреєв Анатолій Опанасович Бармін Олександр Євгенович Григор'єва Світлана Вікторівна Дробенюк Тамара Іванівна Жадько Марія Олександрівна Зеленська Галина Іванівна Кліменко Володимир Олександрович Князєв Сергій Анатолійович Кривобок Наталія Анатоліївна Мейлехов Андрій Олександрович Пінчук Наталія Володимирівна Постельник Ганна Олександрівна Сагайдашніков Юрій Євгенович Сердюк Ірина Віталіївна Субботін Олександр Володимирович Субботіна Валерія Валеріївна Терлецький Олександр Семенович Федоренко Ганна Анатоліївна Чуняєв Олег Миколайович Шевченко Світлана Михайлівна Шнайдер Валентин Володимирович popup.nrat_date 2020-04-02 Close