Elsevier

Electrochimica Acta

Volume 35, Issue 10, October 1990, Pages 1501-1508
Electrochimica Acta

Electrochemical impedance spectroscopy (EIS) of corrosion processes on inhomogeneous surfaces

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Abstract

The influence of surface inhomogeneities on corrosion processes is demonstrated by electrochemical impedance spectroscopy (EIS). Experimental impedance data obtained in different systems are discussed on the basis of transfer function analysis. The examples given include defects in single- and multi-layer films of organic metal coatings and anodized aluminium, oxygen corrosion of iron and steel in neutral aerated solutions, and the influence of donor states on the semiconducting properties of passive films on Zn, ZnCo, and ZnNi substrates.

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