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Information × Registration Number 0224U000591, 0121U109789 , R & D reports Title Physical bases of creation of frame metal-ceramic composites with submicron grain for maintenance of extremely high ballistic characteristics popup.stage_title Head Yurkova Oleksandra I., Registration Date 09-01-2024 Organization National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute" popup.description2  The object of study is metal-ceramic frame composites with submicron grains of tungsten carbide and high-entropy alloys or ultrathin nickel layers evenly distributed along the boundaries of the carbide grains, obtained by high-speed sintering. The aim of the work is to create physical foundations for controlling the architecture of the structure of a metal-ceramic solid to improve its ballistic properties by increasing strength, hardness, and specific gravity by 20 %. The physical foundations for the creation of framework metal-ceramic composites for ballistic purposes based on refractory compounds and multicomponent alloys have been developed. The physical basis for the creation of framework metal-ceramic composites for ballistic purposes based on refractory compounds and multicomponent alloys has been developed. For the first time, a new non-trivial approach to the creation of high-density framework metal-ceramic composites with the use of superhard materials (WC) and high-entropy alloys (NiFeCrWM) as binders to replace traditional cobalt was proposed, experimentally substantiated and implemented, in combination with innovative high-speed methods of electron beam and induction sintering of powders to improve both the structure (preservation of the size of the initial grains of the refractory WC compound) and the complex of physical and mechanical characteristics of the sintered composites, and the sinterability of refractory components, which is one of the most promising approaches to obtaining armor-piercing cores of increased penetration for small arms ammunition, as well as to develop new technologies and approaches to create the latest materials that are globally competitive for operation in extreme operating conditions. In addition, the replacement of Co with an environmentally friendly HEPA binder reduces toxicological and environmental problems. Product Description popup.authors Loboda Petro І. Minitskyi Anatolii Nakonechnyi Sergyi O Stepanov Oleh V popup.nrat_date 2024-01-09 Close