Journal of Applied Electrochemistry, Vol.25, No.10, 962-966, 1995
The Fractal Dimension of Corroded Aluminum Surfaces
The nature of surface features produced during the corrosion of a metallic surface is an important parameter that can affect both the corrosion kinetics and the response of the interface to electrochemical probing. These features are so visibly present, when the surface properties are studied over a certain frequency range, that scientists have recognized and attempted to model them for almost seventy years. But while the evidence is high that many of these features are probably related to the fractal nature of the surface, actual experimental evidence is still quite scarce. In this paper an attempt is made to correlate the fractal dimension of surface profiles measured with a commercial instrument on corroded aluminium specimens with results obtained with electrochemical impedance spectroscopy (EIS).