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Information × Registration Number 0212U000997, 0111U008997 , R & D reports Title Creating the ionic metallurgy methods and research of the main characteristics and properties of materials and surface layers constructional and functional materials, synthesized in the plasma-chemical processes, perspective applied into nuclear, traditional and solar energy popup.stage_title Head Bilous Vitaliy Arsentievich, Registration Date 01-08-2012 Organization National Science Center "Kharkiv Institute of Physics and Technology popup.description2 According to the thematic plan of researches of the characteristics of Cu, Ti, and TiN coatings obtained by sputtering of a target by ions, emitted by a gas plasma source (GPS), are carried out. It is shown, that these coatings unlike vacuum-arc ones did not contain any droplets. The roughness of the titanium coatings, synthesized by means of the GPS, was 0,1 microns, and the roughness of vacuum-arc coatings was 0,6 microns. Micro hardness of the TiN coatings reached values of 33 GPa. Density of pinholes in the coatings obtained by target sputtering was several times lower, than for vacuum-arc coatings. With increase in an angle of inclination of the target concerning GPS axis from 0 to 60° the Ti coating deposition velocity increased approximately twice as high (from 2,5 to 5 micron/hour). At coating deposition by means of GPS more effective utilization of the sputtered material in comparison with a vacuum-arc method was provided. The technique of TiN coatings alloying with silicon by simultaneous sputtering of Ti and Si targets by use of GSM is developed. Such technique has allowed to vary concentration of silicon in the coating from ~ 2,5 to ~ 30 %. Maximum hardness of Ti-Si-N coatings (~ 30 GPa) was obtained at the silicon content in the coating ~ 7 weight % . Characteristics of the vaсuum-arc coatings consisting of alternating layers of pure and alloyed by copper titanium nitride are investigated. Coatings were deposited at simultaneously switched on a source with the titanium cathode, working in direct current mode, and a source with the copper cathode, working in a pulse mode. It is established, that with growth of Cu concentration from 0,3 to 34 weight % the size of coherent-scattering region (CSR) of the titanium nitride decreases from 22 to 11 nanometers that can testify to tendency of suppression of columnar growth of TiN crystallites. The greatest micro hardness of the coatings (37 ГПа) is reached at Сu concentration of 1,2 weight %. Effective means of prolongation of life time of thermal power plant and nuclear power station heat engineering equipment ( turbines blades, elements of shut-off and regulating armature, working wheels of pumps, etc.) is application of protective vacuum-arc coatings based on nitrides which should resist to a complex of destructive factors, major of which are corrosion and erosion. However, it is not enough data about resistance of such coatings to various types of wear . Ti(1-x)Al(x)N coatings have improved characteristics if parametre (x) in the nitride formula makes 0,5-0,6. In conditions of ion-plasma deposition such range of concentration is critical from the point of view of solubility of elements in lattices of nitrides and formation of nanostructure as a result of spinodal decomposition in coatings. At lower content of Al the firm solution based on cubic TiN with structure of NaСl type is formed. At higher one it is formed hexagonal structure of wurtzite which is inherent in AlN, that leads to significant deterioration of characteristics of coatings. Introduction of small quantity of Y in structure of transitive metals nitrides can improve in addition of mechanical properties, thermal stability and oxidation resistance of coatings. They consider, that improvement of characteristics at alloy addition of Y is caused by suppression the columnar growth which is characteristic for vacuum-arc coatings, owing to continuous renucleation, that is caused surface segregation of yttrium in deposition course and formation of the nanostructure. Meanwhile alloy addition of Y can shift border of existence of cubic phase of Ti(1-x) Al(x)N towards smaller concentration of aluminium. The further increase of burn up of fuel in water-moderated water-cooled power reactors and connected with it increase in fuel assembly terms of operation , serve as the reason of necessity of the further improvement and increase of corrosion resistivity of zirconium components of the fuel assemblies. The basic problems, which lead to degradations of zirconium alloys at the raised temperatures, is an intensive oxidation, deterioration of mechanical properties, accidents of LOCA type . One of ways of protection of zirconium is coating deposition. Recently heightened interest to multicomponent nanostructured coatings which have unique properties at high temperature and extreme conditions is revealed. For example, coverings on the basis of TiAlN at a certain relation of titanium and aluminium concentrations have high hardness, wear resistance, resistance to oxidation, thermo stability and low friction factor. Condensates based on Ti-Al-Si-N and Ti-Al-Y-N are even more attractive from the point of view of super hardness and thermostability. One of ways of production of such coatings is vacuum-arc deposition which allows to form multicomponent coatings using both unicomponent, and composite structured cathodes. In this report results of researches of such coatings deposition processes are given. In the report the information concerning influence of some parameters of process of synthesis of polycrystalline diamond films on their structural characteristics also is given. The information concerning limits of use of the theory of thermo elastic peak depending on energy of impinging ions and their sort is given too. Product Description popup.authors Аксьонов Іван Іванович Васильєв Володимир Васильович Грицина Василь Іванович Дуднік Станіслав Федорович Задніпровський Юрій Олексійович Калініченко Олександр Іванович Комар Анатолій Анатолійович Леонов Сергій Олександрович Ломіно Микола Степанович Луньов Валентин Митрофанович Лучанінов Олександр Андрійович Носов Геннадій Ігнатович Овчаренко Валерій Давидович Опалєв Олег Анатолійович Перепьолкін Сергій Степанович Решетняк Олена Миколаївна Стрельницький Володимир Євгенійович Толмачева Галина Миколаївна Ушаков Володимир Андрїйович Хороших Володимир Максимович popup.nrat_date 2020-04-02 Close