The electrochemical impedance response of film-covered mild steel in neutral aerated solutions

摘要: Abstract Electrochemical Impedance Spectroscopy (EIS) has been widely used in the study of corrosion processes and data interpretation is often via simple equivalent circuits. However, such circuits can not be to model real EIS obtained with film covered or corroded steel electrodes near-neutral solutions, especially when interrelation between various components circuit allowed for. impedance spectra have at potential for a mild rotating disc electrode (RDE) chloride solutions addition zinc-polyphosphate inhibitor, which show clear evidence mass transport through porous layer. In addition, d.c. measurements very low values steady state diffusion current, significant effect rotation speed RDE on anodic reaction that layer properties depend stirring conditions. Analysis general previously proposed provides due film-limited transfer becomes reversible.