Effect of Nitrite Ions on Steel Corrosion Induced by Chloride or Sulfate Ions

The influence of nitrite concentration on the corrosion of steel immersed in three simulated pH environments containing chloride ions or sulfate ions has been investigated by comparing and analyzing the change of half-cell potential, the change of threshold level of Cl- or SO42-, the change of thres...

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Bibliographic Details
Published inInternational Journal of Corrosion Vol. 2013; no. 2013; pp. 1 - 16
Main Authors Cao, Zhonglu, Hibino, Makoto, Goda, Hiroki
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Puplishing Corporation 01.01.2013
Hindawi Publishing Corporation
John Wiley & Sons, Inc
Hindawi Limited
Wiley
Subjects
Behavior
Cement hydration
Chemical properties
Chloride ions
Concrete
Corrosion
Corrosion inhibitors
Nitrites
Nitrogen dioxide
Steel
Steels
Studies
Sulfates
Thresholds
United States
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Summary:The influence of nitrite concentration on the corrosion of steel immersed in three simulated pH environments containing chloride ions or sulfate ions has been investigated by comparing and analyzing the change of half-cell potential, the change of threshold level of Cl- or SO42-, the change of threshold level of NO2-/Cl- or NO2-/SO42- mole ratio, and the changes of anodic/cathodic polarization curves and Stern-Geary constant B. The corrosivity of chloride ions against sulfate ions also has been discussed in pH 12.6, pH 10.3, and pH 8.1 environments containing 0, 0.053, and 0.2 mol/L NO2, respectively.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1687-9325
1687-9333
DOI:10.1155/2013/853730