EIS characterization of the inhibition of mild steel corrosion with carboxylates in neutral aqueous solution |
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Authors: | Ursula Rammelt Silvio Köhler Georg Reinhard |
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Affiliation: | Excor Korrosionsforschung GmbH Dresden, Magdeburger Straße 58, D-01067 Dresden, Germany |
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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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Keywords: | Mild steel Carboxylate/benzotriazole neutral solution Passivation EIS |
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