Персона: Михальчик, Владимир Валерьевич
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Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Владимир Валерьевич
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- ПубликацияТолько метаданныеDetermination of Density and Pore Size Distribution in Uranium Dioxide Fuel Pellet by Image Analysis of its Cross-Sectional Structure(2019) Devyatko, Yury N.; Khomyakov, Oleg V.; Tenishev, Andrey V.; Mikhalchik, Vladimir V.; Shornikov, Dmitry P.; Хомяков, Олег Владимирович; Тенишев, Андрей Вадимович; Михальчик, Владимир Валерьевич; Шорников, Дмитрий ПавловичThe paper proposes a method for reducing the true pore size in oxide nuclear fuel using a well-known histogram for the distribution of the pores cross sections across the polished section. It is shown that the problem of constructing a continuous pore size distribution function from the pore size distribution histogram is incorrect. Histograms showing pore distributions across the polished sections of oxide nuclear fuel sintered under various conditions are obtained. The Scheil-Saltykov method was used to reduce histograms for 3D pore size distributions in uranium oxide fuel.
- ПубликацияТолько метаданныеSpecial aspects of uranium oxide non-stoichiometry measurement by thermogravimetric analysis(2020) Tenishev, A.; Kuzmin, R.; Matvenov, M.; Mikhalchik, V.; Shornikov, D.; Тенишев, Андрей Вадимович; Матвенов, Максим Евгеньевич; Михальчик, Владимир Валерьевич; Шорников, Дмитрий Павлович© Published under licence by IOP Publishing Ltd.Thermogravimetric analyses for determining uranium dioxide non-stoichiometry have been reviewed. Parameters of oxidation in air at various temperatures have been examined. The key parameters affecting accuracy of the obtained results have been evaluated. Oxidation parameters have been proposed, both for pure uranium dioxide as well as for uranium dioxide with added gadolinium oxide, which makes it possible to determine oxygen to metal (O/M) ratio with at least ±0.002 accuracy in weighed sample portions of approximately 3 g.