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Information × Registration Number 0218U006481, 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 21-05-2018 Organization Institute of Pulse Research and Engineering popup.description2 The research focuses on the processes of high-temperature synthesis of carbon and metal-carbon nanomaterials in combustion waves initiated by the spark-pulse method. Research methods - physical experiment, diagnostics of SHS processes, research of products of synthesis by methods of electron microscopy and X-ray diffraction; as well as elementary x-ray spectral microanalysis. The regularities of the phase formation of nanostructured metal-carbon nanomaterials in the self-propagating high-temperature synthesis (SHS) process initiated by a discharge-current pulse are experimentally studied. It is shown that the use of polytetrafluoroethylene or carbon nanomaterials obtained by electrodischarge treatment of hydrocarbons in a Ti-Al-C powder system allows the synthesis of nanostructured composite materials containing titanium carbide and MAX phases (Ti2AlC and Ti3AlC2). The combustion temperature of the powder mixture measured by a tungsten-rhenium thermocouple is T = 2500 K, which indicates the occurrence of the liquid-phase synthesis. The phase composition of the composite materials based on the MAX phases of the Ti-Al-C system obtained by various SHS methods has been studied: SHS without load, free SHS compression and SHS extrusion. It is shown that the most intensive scheme of plastic deformation, which is implemented in the process of SHS extrusion, if compared to other SHS methods, makes it possible to obtain a compact, homogeneous composite structure containing up to 60% of MAX phases. Applications of external pressure (7 MPa) to a liquid SHS-sample allowed to reduce the porosity of the synthesized material from 50% to 8%. The microhardness of the samples according to Vickers under different conditions of synthesis ranges from 4.6 to 8.5 GPa. Recommendations for the creation of technologies for obtaining carbon nanomaterials, nanostructured carbides of refractory metals and composite materials have been developed. Product Description popup.authors Баклар В.Ю. Кускова н,і. Петриченко С.В. Хайнацький С.О. Христо О.І. Челпанов Д.І. Ющишина Г.М. popup.nrat_date 2020-04-02 Close