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Information × Registration Number 0203U006570, 0100U004863 , R & D reports Title Research of processes of a high-temperature physicochemical interaction of construction materials with the liquid metal environments with taking into account role of a non-metallic impurities popup.stage_title Head Fedirko V. M., Registration Date 12-06-2003 Organization Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine popup.description2 Physical-mathematical model of selective formation of oxide layers in system «Fe(Cr)-Pb(O)» are proposed. It takes into account the non-stationary conditions of mass exchange at the phase boundaries and allows describing the evolution of physico-chemical composition and kinetic peculiarities of growing of oxide layer. Is is determined that the high-temperature interaction in «Fe(Cr)-Pb(O)» system is accompanied by formation the complex corrosion zone in near phase boundaries region that consists of three main sub-zones: inner porous zone of matrix; thin oxide layer and outer fractal layer. Oxide layer (Cr2O3 , (FeCr)3O4) is an effective barrier on the path to the lead penetration into the matrix, bat it prevent no from the oxygen diffusion into- and solid material components out of the matrix. For the first time, the existence of the outer fractal layer formed on the «MeO-Pb(O)» initial interface at defined oxygen concentration in lead (10-7…10-6 wt. %) are confirmed. The generalized scheme of corrosion interaction of chromium steels with oxygen containing lead melt has been proposed. Scheme clearly represents the conditions of corrosion mechanism changing from dissolution of the steel components in the melt to the passivation of its surface. Product Description popup.authors popup.nrat_date 2020-04-02 Close