Angle-resolved XPS study of carbon steel passivity and chloride-induced depassivation in simulated concrete pore solution

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DOIResolve DOI: http://doi.org/10.1016/j.corsci.2012.01.019
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TypeArticle
Journal titleCorrosion Science
ISSN0010-938X
Volume58
Pages159167
SubjectSteel reinforced concrete; XPS; Passive films; Passivity
AbstractThe passivity and chloride-induced depassivation of carbon steel in simulated concrete pore (CP) solution (pH = 13.3) was investigated using angle-resolved X-ray photoelectron spectroscopy (XPS). After full passivation, the thickness of the oxide film on steel specimens was approximately 5 nm. The oxide films close to the steel substrate were mainly composed of protective Fe(II) oxides while near the free surface the film consisted mostly of Fe(III) oxides. The addition of chloride to the CP solution decreased the thickness of the oxide film and changed its stoichiometry such that near the film/substrate interface the Fe(II)/Fe(III) decreased.
Publication date
LanguageEnglish
AffiliationEnergy, Mining and Environment; National Research Council Canada
Peer reviewedYes
IdentifierS0010938X12000534
NPARC number21268720
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Record identifiere8a700a8-1613-42a1-9b0c-2fa9d10078b2
Record created2013-11-08
Record modified2016-05-09
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