Journal ArticleDOI
An Electrochemical Model for Prediction of Corrosion of Mild Steel in Aqueous Carbon Dioxide Solutions
TLDR
In this paper, a predictive model was developed for uniform carbon dioxide (CO2) corrosion, based on modeling of individual electrochemical reactions in a water-CO2 system, taking into account the reactions of hydrogen ion (H+) reduction, carbonic acid (H2CO3) reduction, direct water reduction, oxygen reduction, and anodic dissolution of iron.Abstract:
A predictive model was developed for uniform carbon dioxide (CO2) corrosion, based on modeling of individual electrochemical reactions in a water-CO2 system. The model takes into account the electrochemical reactions of hydrogen ion (H+) reduction, carbonic acid (H2CO3) reduction, direct water reduction, oxygen reduction, and anodic dissolution of iron. The required electrochemical parameters (e.g., exchange current densities and Tafel slopes) for different reactions were determined from experiments conducted in glass cells. The corrosion process was monitored using polarization resistance, potentiodynamic sweep, electrochemical impedance, and weight-loss measurements. The model was calibrated for two mild steels over a range of parameters: temperature (t) = 20°C to 80°C, pH = 3 to 6, partial pressure of CO2 (PCO2) = 0 bar to 1 bar (0 kPa to 100 kPa), and ω = 0 rpm to 5,000 rpm (vp = 0 m/s to 2.5 m/s). The model was applicable for uniform corrosion with no protective films present. Performance of...read more
Citations
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Journal ArticleDOI
Effect of HCO3− on electrochemical kinetics of carbon steel corrosion in CO2-saturated brines
Ruishu F. Wright,Ruishu F. Wright,Edward R. Brand,Margaret Ziomek-Moroz,Joseph Tylczak,Paul R. Ohodnicki,Paul R. Ohodnicki +6 more
TL;DR: In this article, the effect of HCO3−(aq) on CO2 corrosion of carbon steel was investigated in deaerated 3.5wt% NaCl solutions at 30 °C from pH 3.96 to 7.15.
Journal ArticleDOI
The Influence of pH on Localized Corrosion Behavior of X65 Carbon Steel in CO2-Saturated Brines
TL;DR: In this paper, the role of pH on the characteristics of corrosion product and pitting corrosion behavior of X65 carbon steel (UNS K03014) in CO2-saturated brine was investigated.
Journal ArticleDOI
Theoretical Modeling of the Possibility of Acid Producing BacteriaCausing Fast Pitting Biocorrosion
TL;DR: In this article, the authors explored the possibility of very high MIC pitting corrosion rates due to free organic acids (represented by acetic acid) and acidic pH corrosion through mechanistic modeling.
Journal ArticleDOI
Green corrosion inhibitor for oilfield application II: The time–evolution effect on the sweet corrosion of API X60 steel in synthetic brine and the inhibition performance of 2-(2-pyridyl) benzimidazole under turbulent hydrodynamics
TL;DR: In this paper, a time-evolution study of 2-(2-pyridyl) benzimidazole (2PB) as CO2 corrosion inhibitor for API X60 steel under hydrodynamic conditions in a synthetic brine solution has been undertaken.
References
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Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Journal ArticleDOI
Physical Chemistry, 2nd Ed.
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Fundamentals of electrochemistry
TL;DR: In this article, a rigorous outline of the basic concepts forming the subject matter of modern theoretical and applied electrochemistry, originally published in Russian in 1988 by Khimiya Press, Moscow.