Interaction of a model melt of a reactor core with zirconium dioxide ceramic with different porosity

The results of an experimental investigation of the interaction of zirconium dioxide ceramic with different porosity with a model composition of a core melt are presented. The experiments were performed with melt composition (in mass%) UO2 46.6, ZrO217.6, and Fe2O3 under isothermal conditions at 1800°C in an argon atmosphere. Data were obtained on the rate of erosion of the dense ceramic, the character of the permeation of the pores and the pore morphology, and the distribution of the melt elements along the height of the porous layer, 11 figures, 1 table, 3 references.