Open Access Conference Proceedings

For cooling tubes manufactured of aluminized carbon steel with inner surface welded longitudinally the question arises if the anticorrosion quality of Al coating produced on external surface can be influenced by the presence of the weld area on internal surface. In fact this quality is related to Al coating ability to prevent or at least to inhibit the corrosion process occurring during penetration of coating by water environment to the steel-coating interface. Electrochemical noise (EN) measurements provide a set of parameters which can be used to obtain useful information relating to possible impacts of time development of expected active-passive transitions in Al coating on kinetics of the underlying steel corrosion process.

Keywords: aluminized carbon steel, localized corrosion, electrochemical noise

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