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Information × Registration Number 0211U008536, 0110U002560 , R & D reports Title Development of a new method of electrodischarge synthesis of compositional powders containing carbon and metals, and pilot equipment for their spark-plasma plugging. popup.stage_title Head Suzonenko Olga Mukolayivna, Registration Date 22-06-2011 Organization Institute of Pulse Research and Engineering popup.description2 The purpose of work is development of a new method of synthesis of composition powders by their treatment by physical and chemical effect of electric discharges (ED) in liquids which contain carbon and also the design of the prototypes of the equipment for their plasma-spark sintering. Object of the research - disperse mixtures of powders of carbide phases of metals WC, ТіС with a metal bond (Co, Fe …). It is established that morphometric characteristics of powders Fe-TiS, WС-Сo with different Fe and Co content linearly depend on pressure in the discharge channel and on total energy of treatment. Definitely, the use of a hydrocarbonic liquid as a working medium at an electric discharge promotes activation of composition powders as a result of corpuscles fining, considerable development of a specific surface and change of the form factor, cleansing of a surface of corpuscles against impurities and adsorption films, changing the composition of a functional cover of a surface, chemical, stoichiometric composition and a microscopic structure of a powder surface. At consolidation, this allows to create conditions for the increase of diffusiion processes velocity and formation of material structure having high physicomechanical properties irrespective of Fe and Co content. To realise plasma-spark sintering of composition powders, the choice of the prospective schematic design of a pulse currents generator is made based on superposition of two independent voltages: constant and alternating. Product Description popup.authors Івлієв А.І. Зайченко А.Д. Колмагорова Р.П. Конотоп С. Липян Є.В. Литвинов В.В. Тафтай Е.І. Торпаков А.С. Хвощан О.В. popup.nrat_date 2020-04-02 Close