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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Bibliographic Details
Published inElectrochimica acta Vol. 76; pp. 208 - 217
Main Authors Wang, L., Daub, K., Qin, Z., Wren, J.C.
Format Journal Article
LanguageEnglish
Published Kidlington Elsevier Ltd 01.08.2012
Elsevier
Subjects
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
Electrochemistry
Carbon steel
Oxide formation
Ferrous ion
γ-FeOOH
Iron II Ions
Oxide layer
Film formation
Oxides
Iron Hydroxides oxides
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Summary: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) in solution somewhat suppresses the dissolution of FeII, thus reducing the net rate of anodic oxidation, while 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).
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2012.04.135