Перегляд за Автор "Kryvobok, R. V."
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Документ Ceramic radiotransparent materials on the basis of BaO-Al₂O₃-SiO₂ and SrO-Al₂O₃-SiO₂ systems(Scientific Society of the Silicate Industry, 2015) Lisachuk, G. V.; Kryvobok, R. V.; Fedorenko, E. Y.; Zakharov, A. V.Based on the literature review, the authors made a justified choice of ceramic materials with a low dielectric constant and dielectric loss tangent. The composition and process parameters (burning temperature - 1550 °C, burning duration - 5 hours) of producing of celsian and Sr-anorthite ceramics with low dielectric properties were defined. The phase composition of products of burning was examined. X-ray phase studies of Sr-ceramics after burning were conducted.Документ Ceramic-inorganic polymer composites for protection against electromagnetic radiation mechanical properties designing(IOP Publishing Ltd, 2023) Lebedev, V. V.; Miroshnichenko, D. V.; Kryvobok, R. V.; Cherkashina, A. M.; Riabchenko, M. O.The possibility of designing mechanical properties of ceramic-inorganic polymer composites for protection against electromagnetic radiation is considered. As a result, the mechanical properties of polymer composite based on polyamide, modified with ceramic inorganic graphite-ferromagnetic fillers (silicon carbide, chromium oxide Cr2O3 and graphite) was received and optimized. The strength characteristics complex of ceramic-inorganic polymer composites with silicon carbide SiC, chromium oxide Cr2O3 and graphite content in diapason 5-15 % wt. were studied. It was established that the optimal strength characteristics can be received using binary modification of polyamide with ceramic-inorganic graphite-ferromagnetic fillers: polyamide 6 – SiC 10% wt. – Cr2O3 10% wt. and polyamide 6 – SiC 10% wt. – graphite 10% wt. Using mathematical modeling, it was established that the polyamide 6 – SiC 10% wt system is the most optimal for three-component complex modification with ceramic inorganic graphite-ferromagnetic fillers – Cr2O3 10% wt. – graphite 10% wt. By design experimental-statistical mathematical models in equal regressions, mathematical optimization of mechanical properties of polymeric ceramic-inorganic composites contains for protection against electromagnetic radiation was carried out. Designed polymer ceramic-inorganic composites for protection against electromagnetic radiation according to their strength characteristics can be used for modern radio absorbing materials production.Документ Development of radio transparent ceramic materials(The American Ceramic Society, 2016) Kryvobok, R. V.; Lisachuk, G.; Zakharov, A.; Fedorenko, E.; Prytkina, M.Документ Radio-absorbing materials with adjustable dielectric properties(Chuiko Institute of Surface Chemistry of National Academy of Sciences of Ukraine, 2018) Lisachuk, G. V.; Kryvobok, R. V.; Pitak, Y. M.; Lapuzina, O.; Kryvobok, N. A.; Maystat, N. S.Документ Technological parameters of ceramics creation on the basis of slavsonite(Scientific Society of the Silicate Industry, 2019) Lisaschuk, G. V.; Kryvobok, R. V.; Zakharov, A.; Chefranov, E. V.; Lapuzina, O.; Voloshchuk, V. V.; Samoilenko, N. N.Документ Thermodynamic analysis of solid phase reactions in SrO–Al₂O₃–SiO₂(STC "Institute for Single Crystals", 2016) Lisachuk, G. V.; Kryvobok, R. V.; Zakharov, A. V.; Fedorenko, E. Y.; Prytkina, M. S.On the basis of thermodynamic calculations the values of the Gibbs energy of formation reactions of strontium anorthite from various raw materials in the temperature range of 773-1973 K were estimated. The study of SrO–Al₂O₃–SiO₂ system indicates the prospects of its further investigation of development of the radio transparent ceramic materials.