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- W259162004 abstract "Interaction of oxides melts and iron with iron oxide (the main component of sacrificial materials) is studied. The interaction on the boundary of Fe{sub 2}O{sub 3} and melts of PbO, Pb{sub 2}SiO{sub 4}, PbSiO{sub 3}, Na{sub 2}SiO{sub 3}, Na{sub 4}SiO{sub 4}, Na{sub 2}Si2O{sub 5}, iron melt is considered. Comparison is given of the results obtained with data acquired in investigating the interaction on the boundary of Fe{sub 2}O{sub 3} and corium. Ablation for all the types of melts is found to get started with diffusion dissolution of Fe{sub 2}O{sub 3} in the melt followed by redox reaction accompanied by evolution of molecular oxygen. The molecular oxygen disconnects SM grains in the zone of the reaction and due to it the ablation is displaced from diffusion range to kinetic range and becomes pulsating. The rate of the redox reaction is dependent on the oxygen ion concentration (the higher concentration of oxygen ions in melt the higher speed of molecular oxygen evolution is). It is shown that molten Fe does not wet Fe{sub 2}O{sub 3} at 1600-1800 deg C that makes the ablation process slow. To accelerate the Fe{sub 2}O{sub 3} interaction with the iron melt it is necessary to add oxidesmore » of 3d- elements (CuO, MnO, NiO, CoO ) into Fe{sub 2}O{sub 3}. (authors)« less" @default.
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- W259162004 date "2004-07-01" @default.
- W259162004 modified "2023-09-26" @default.
- W259162004 title "Physico-chemical Processes on the Heterogeneous Boundary of Oxides Melts and Molten Iron with the Sacrificed Materials" @default.
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