Effect of soil compositions on the electrochemical corrosion behavior of carbon steel in simulated soil solution

In this study, effect of cations, Ca2+, Mg2+, K+, and anions, SO42–, HCO3–, NO3– on electrochemical corrosion behavior of carbon steel in simulated soil solution was investigated through potentiodynamic polarization curves and electrochemical impedance spectroscopy. The results indicate that the Ca2...

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Bibliographic Details
Published in:Materialwissenschaft und Werkstofftechnik 2010-04, Vol.41 (4), p.228-233
Main Authors: Liu, T. M., Wu, Y. H., Luo, S. X., Sun, C.
Format: Article
Language:English
Subjects:
carbon steel
corrosion behavior
Kohlenstoffstähle
Korrosion im Erdboden
Korrosionsverhalten
simulated soil solution
simulierte Erdbodenlösungen
Soil corrosion
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Summary:In this study, effect of cations, Ca2+, Mg2+, K+, and anions, SO42–, HCO3–, NO3– on electrochemical corrosion behavior of carbon steel in simulated soil solution was investigated through potentiodynamic polarization curves and electrochemical impedance spectroscopy. The results indicate that the Ca2+and Mg2+ can decrease the corrosion current density of carbon steel in simulated soil solution, and K+, SO42–, HCO3–, and NO3– can increase the corrosion density. All the above ions in the simulated soil solution can decrease its resistivity, but they have different effect on the charge transfer resistivity. This finding can be useful in evaluating the corrosivity of certain soil through chemical analysis, and provide data for construction engineers.
ISSN:0933-5137
1521-4052
DOI:10.1002/mawe.201000578