In this Metrohm Application Note, it is shown how the combination of the Autolab PGSTAT204 with the 1 L corrosion cell and the NOVA software facilitates electrochemical impedance spectroscopy (EIS) on coated aluminum samples.
EIS provides valuable conclusions concerning the coating quality and thus the corrosion resistance. The electrochemical impedance spectroscopy (EIS) is a fast, non-destructive and powerful technique, widely used in corrosion.
EIS is a powerful technique used to investigate the linear response of a system perturbed by an alternating potential (potentiostatic EIS) or current (galvanostatic EIS). For an introduction on this technique, the reader is kindly invited to read the application notes EIS01 – EIS06.
