Abstract

Electrochemical impedance spectroscopy (EIS) and open circuit potential (OCP) measurements were used to study the ability of monocarboxylates to support the passivation of mild steel by dissolved oxygen in near neutral solution. It was shown that the effectiveness of monocarboxylates depends on their ability to form weakly soluble Fe(III) compounds and to adsorb on the oxide covered surface. The inhibition effect can be improved by an addition of a second inhibitor.

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