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
More filters
Journal ArticleDOI
Carbon steel corrosion in clay-rich environment
TL;DR: In this paper, the authors investigated the carbon steel corrosion in carbon dioxide clay-rich environment to understand its behavior under geological conditions, and the results showed the formation of magnetite as the main corrosion product in the first step of the corrosion process, followed by different corrosion products with complex mixtures of iron-oxide, hydroxycarbonate, hydrooxychloride and sulfide phases.
Journal ArticleDOI
Efficient Complex Surfactants from the Type of Fatty Acids as Corrosion Inhibitors for Mild Steel C1018 in CO2-Environments
V.M. Abbasov,Hany M. Abd El-Lateef,L. I. Aliyeva,I. T. Ismayilov,Elmar E. Qasimov,Mamedova M. Narmin +5 more
TL;DR: In this article, the efficiency of three complex surfactants based on sunflower oil and nitrogen containing compounds as corrosion inhibitors for mild steel in -saturated 1% NaCl solution, has been determined by weight loss and LPR corrosion rate measurements.
Journal ArticleDOI
A mechanistic model for pipeline steel corrosion in supercritical CO2–SO2–O2–H2O environments
TL;DR: In this paper, a mechanistic model was established to predict uniform corrosion rate and investigate the corrosion mechanisms of pipeline steel in supercritical CO 2 -SO 2 -O 2 -H 2 O environments.
Journal ArticleDOI
Effect of Salt Concentration on the Corrosion Behavior of Carbon Steel in CO2 Environment
TL;DR: In this paper, the effect of salt (NaCl) concentration on the corrosion rate of carbon steel in CO2-saturated solutions was explored in a wide range from 0.001 to 10
Journal ArticleDOI
Influence of SO2 on the corrosion and stress corrosion cracking susceptibility of supercritical CO2 transportation pipelines
Yimin Zeng,Kaiyang Li +1 more
TL;DR: The impacts of SO2 on corrosion and stress corrosion cracking (SCC) of supercritical CO2 pipeline steels are unclear because of limited field operation experience and somewhat controversial reported results as discussed by the authors.
References
More filters
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.
Book
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.