Effect of dissolved ferrous iron on oxide film formation on carbon steel

Effect of dissolved ferrous iron on oxide film formation on carbon steel

The effect of the presence of dissolved ferrous ion (Fe2+(aq)) on surface oxide film growth and conversion on carbon steel in pH 8.4 borate solutions was studied as a function of potential. The results of electrochemical measurements and surface analyses provide a consistent picture of oxide growth...

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Veröffentlicht in:Electrochimica acta 2012-08, Vol.76, p.208-217
Hauptverfasser: Wang, L., Daub, K., Qin, Z., Wren, J.C.
Format: Artikel
Sprache:eng
Schlagworte:
Anodizing
Carbon steel
Carbon steels
Chemistry
Conversion
Dissolution
Electrochemistry
Exact sciences and technology
Ferrous ion
General and physical chemistry
Oxidation
Oxide coatings
Oxide formation
Oxides
Steels
γ-FeOOH
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Beschreibung
Zusammenfassung:The effect of the presence of dissolved ferrous ion (Fe2+(aq)) on surface oxide film growth and conversion on carbon steel in pH 8.4 borate solutions was studied as a function of potential. The results of electrochemical measurements and surface analyses provide a consistent picture of oxide growth and conversion behaviour and the role of Fe2+(aq) on the oxidation. At potentials−0.4VSCE the presence of Fe2+(aq) at 0.1mM can substantially increase the rate of formation of γ-FeOOH on the carbon steel surface via oxidation of Fe2+(aq).
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2012.04.135