Modeling of the surface treatment of passive metals

On the basis of analysis of the specific features of physicochemical reactions leading to the local destruction of the surface of passive metals, we conclude that it is impossible to construct an adequate kinetic model of its evolution. For modeling the processes of formation of the surface of metals inclined to passivation, we propose to use the formalization of discrete states with subsequent analysis of the dynamics of these processes. We have constructed a simulation model of the transformation of the morphology of an electrochemically active surface under the action of polarization by pulse current and proposed a scheme of the corresponding technological process and a quantitative criterion for the completion of treatment. __________ Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 44, No. 1, pp. 69–75, January–February, 2008.