Modeling of stoichiometric uranium dioxide grain growth during isothermal sintering | Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika – Tomsk State University Journal of Mathematics and Mechanics. 2014. № 1(27).

Modeling of stoichiometric uranium dioxide grain growth during isothermal sintering

The process of stoichi-ometric uranium dioxide grain growth during isothermal sintering is considered. A three-dimensional UO2 grain growth model based on physical concepts described in the article was developed. This model allows one to estimate the influence of pores carried by grain boundaries on uranium dioxide grain growth kinetic by taking into account the mass transfer caused by surface diffusion, evaporation, condensation, initial particle size distribution, and its evolution. Analytical equations used in this model allow one to simplify the calculation structure. This simplification reduces the calculation time and provides an ability to solve such practical problems as influence of the processing method on evolution of the average grain size in a pellet. The grain growth model was verified according to available experimental data.

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Keywords

диоксид урана, рост зерен, модель, средний размер зерна, пористость, uranium dioxide, grain growth, model, average grain size, porosity

Authors

Name	Organization	E-mail
Bakhteev Oleg Alexandrovich	JSC "Academician A.A. Bochvar High-Tech Research Institute of Inorganic Materials", Moscow, Russian Federation	lysikov@bochvar.ru
Lysikov Alexander Vladimirovich	JSC "Academician A.A. Bochvar High-Tech Research Institute of Inorganic Materials", Moscow, Russian Federation	lysikov@bochvar.ru
Mikheev Evgeniy Nikolaevich	JSC "Academician A.A. Bochvar High-Tech Research Institute of Inorganic Materials", Moscow, Russian Federation	lysikov@bochvar.ru

Всего: 3

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