Authors: L. Lazzari, M. Ormellese, V. Bueno
Affilation: Politecnico di Milano, Italy
Pages: 916 - 919
Keywords: nano structured films, AC voltammetry, cathodic protection, ac-corrosion, AFM
Serious cases of corrosion in metal structures under both alternating current (AC) and cathodic protection (CP) have been reported. The objective of this research is the proposal of a mechanism by which AC affects the nano sized/structured surface films formed on metals under CP. A model will be proposed and experimentally validated, in order to relate the metal corrosiveness to its nano sized/structured surface, under the simultaneous effect of AC and CP. These analytical and kinetic studies will be combined with Atomic Force Microscopy (AFM) performed in the electrolytic cell, where the AC-Corrosion process is simulated, in order to obtain, at the nano-scale, the in-situ and real-time metal surface characterization.