MODELING OF LOOSE DEPOSITS ELECTROCRYSTALLIZED BY ELECTROLYTIC PRECIPITATION FROM AQUEOUS-SOLUTIONS

A dynamic model of the disperse deposit grown through its electrolytic precipitation from aqueous solutions is based on a description of the work on the corrosion short-circuited galvanic cell, at the three-dim ensional cathodic regions of which the process occurs in intradiffusio n regime. The change in the dendrite growth dynamics is considered in relation to the electrochemical parameters of the precipitated and car rier metals (equilibrium potential, exchange current densities, and hy drogen evolution parameters for both metals) and the number of the res ulting corrosion cells and the tip radius of the growing dendrites. Th e results of the calculations are compared with experimental data for copper precipitation by iron and cadmium precipitation by zinc.