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Information × Registration Number 0217U000747, 0115U003323 , R & D reports Title Developing discharge pulse methods of implementing the self-propagating high-temperature synthesis in exothermal systems to obtain carbon and metal-carbon nanomaterials popup.stage_title Head Kuskova Nataliy Ivanivna, Registration Date 24-02-2017 Organization Institute of Pulse Research and Engineering popup.description2 The purpose of the research comprises processes of high-temperature synthesis of carbon and metal-carbon nanomaterials in the combustion wave, initiated by a discharge-pulse method. Methods of the research comprise a physical experiment in the laboratory; diagnostics of SHS processes; the analysis of the synthesis products. The experimental studies of synthesis of carbon nanomaterials (CNM) in powder mixtures "aluminum + polytetrafluoroethylene" (with the addition of the catalyst and hydrocarbons), "sodium azide + polytetrafluoroethylene" are conducted. It is shown that SHS in systems "aluminum + polytetrafluoroethylene + hydrocarbon" is realized under condition that the hydrocarbon mass fraction in the starting mixture does not exceed 20 %; the usage of hydrocarbons prevents oxidation of SHS products and increases the yield of CNM. Dependencies of conductivity of carbon nanomaterials on the density at different compaction ratios of powders are obtained. Different values of electrical conductivity (from 0.01 S/m to 50 S/m) are due to the presence of different allotropic forms of carbon in powders. It is proposed to use a powder mixture "aluminum + titanium + polytetrafluoroethylene" for SH synthesis of carbides during the course of conjugated exothermic reactions. The formation of nanostructured titanium carbide powder occurs as a result of the combustion of the mixture (nanocrystallite size equals to 35 nm). Implementation of SH synthesis of refractory metal carbides is performed in the system "tungsten + titanium + CNM". It is shown that an increase in the tungsten content in the mixture from 50 % to 80 % leads to a decrease of the unreacted carbon and tungsten and an increase in the WC carbide content in the SHS-product, respectively. Product Description popup.authors Баклар В.Ю. Кускова н,і. Петриченко С.В. Терехов А.Ю. Хайнацький С.О. Христо О.І. Челпанов Д.І. Ющишина Г.М. popup.nrat_date 2020-04-02 Close