Registration Number
0218U001296,
0116U000853
, R & D reports
Title
Development of scientific bases of structural engineering, vacuum plasma multilayer superhard coatings.
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Head
Vitaly Dmitryk, Доктор технічних наук
Registration Date
22-02-2018
Organization
The Kharkov state polytechnical university
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Object of research - fundamental processes of structural condition formation and the possibility of directional change depending on the preparation conditions and post-condensation thermal radiation treatment. The aim of the work - to establish the main factors of influence on the structural state and the physical and mechanical properties of nano-layer multi-period nitride coatings based on transition metals.Research methods - scanning and transmission electron microscopy of high-resolution, X-ray diffraction methods, X-ray fluorescence elemental analysis, measuring the strength and electrical properties. It has been shown by controlling the structural state (structural engineering), it is possible to achieve the required functional characteristics of multilayer coatings, as well as their reproducibility, which is very important for the industrial application of developments. Multilayer coatings of CrN / MoN, CrN / ZrN, CrNTiN and Me1N-Me2N / Me1Me2 systems (where Me-Cr, Ti, Zr, Mo) have been investigated. The formation of phases with a cubic crystal lattice under nonequilibrium conditions is established under the vacuum arc method of production. The supply of a negative bias potential of -200V in mononitrides leads to the predominant formation of texture of crystallites with the [111] axis. The derivation of thin (about 10 nm) metal layers leads to a decrease in texture perfection [111] and texture formation [100]. This effect is associated with a change in the stress-strain state of nitride layers. It is determined that the compositional multiperiod coatings Me1N-Me2N / Me1-Me2 have greater hardness and greater stability in comparison with MeN / Me. For a multi-period system with damping metal layers - ZrN-CrN / Zr-Cr, superhard coatings with a hardness of 46 GPa were obtained.
Product Description
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Білозеров Валерій Володимирович
Волков Олег Олексійович
Вуєць Олександр Євгенович
Зозуля Едуард Володимирович
Князєв Сергій Анатолійович
Колупаєв Ігор Миколайович
Кривобок Наталія Анатоліївна
Постельник Ганна Олександрівна
Соболь Олег Валентинович
Терлецький Олександр Семенович
Федоренко Ганна Анатоліївна
Шевченко Світлана Михайлівна
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2020-04-02
