Registration Number
0222U003442,
0119U100184
, R & D reports
Title
Mechanisms for the formation of ceramic and metallic nanomaterials promising for use in dual technologies.
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Head
Nakonechna Olesia I., Доктор фізико-математичних наук
Registration Date
23-03-2022
Organization
Taras Shevchenko National University of Kyiv
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Object of research: Structural-phase state of anocomposition systems.
Mechanisms of structure influence on physical and mechanical characteristics of the specified systems.
Objective: Creation of new nanoscale compositions (mainly with modifying additives of functionalized nanotubes, carbides, oxides), designed to improve physicochemical properties (density, hardness, strength, wear resistance, crack resistance, corrosion resistance, etc.)
composite materials and protective coatings promising for use in dual technologies.
Research methods: method of mechanochemical synthesis, methods X-ray diffraction, Vickers microhardness, electron scanning microscopy.
Promising compositions of corundum ceramics modified with functionalized carbon nanotubes Al2O3 / CNT to increase armor protection have been identified. It is shown that the composite Al2O3 / 1.5 at.% CNT shows the highest limits of flexural strength (403.6 MPa) and crack resistance (4.21 MPa.m1 / 2). The possibility of choosing a number of optimal structural and technological parameters that provide the maximum increase in the ballistic effect of ceramic armor elements is shown.
A series of works on mechanochemical synthesis in a high-energy planetary mill of double carbides of d-transition metals was performed and nanosized carbide powders were synthesized. The efficiency of using CNT for creation of nanosized carbides of transition d-metals, in particular, NiC with improved mechanical characteristics (hardness of the obtained NiC material reaches 6.9–7.2 GPa). It is analyzed how the allotropic form of carbon (graphite or carbon nanotubes) used to make the charge affects the process of mechanochemical synthesis and the nature of the interaction between source components and, accordingly, the phase composition of the final product.
The composite material obtained from MX of synthesized equiatomic NiC carbide was successfully tested for the application of thin coatings by electron beam sputtering.
Product Description
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Bilyavyna Nadiia М.
Kogutyuk Pavlo P.
Kudin Volodymyr G.
Kuryliuk Alla M.
Makara Volodymyr A.
Popov Oleksii Yu.
Semenko Mykhaylo Р.
Semchuk Svyatoslav S.
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2022-03-23
