Effect of nitrite ions on steel corrosion induced by chloride or sulfate Ions

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Abstract

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 SO 4 2 -, the change of threshold level of NO2̄/Cl̄ or NO2̄/SO42̄ 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. © 2013 Zhonglu Cao et al.

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Cao, Z., Hibino, M., & Goda, H. (2013). Effect of nitrite ions on steel corrosion induced by chloride or sulfate Ions. International Journal of Corrosion, 2013. https://doi.org/10.1155/2013/853730

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