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

2010; Wiley; Volume: 41; Issue: 4 Linguagem: Inglês

10.1002/mawe.201000578

1521-4052

T. M. Liu, Yulong Wu, S. X. Luo, Chen‐Nan Sun,

Hydrogen embrittlement and corrosion behaviors in metals

Abstract In this study, effect of cations, Ca 2+ , Mg 2+ , K + , and anions, SO 4 2– , HCO 3 – , NO 3 – 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 Ca 2+ and Mg 2+ can decrease the corrosion current density of carbon steel in simulated soil solution, and K + , SO 4 2– , HCO 3 – , and NO 3 – 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.