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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Book ChapterDOI
Top-of-the-line corrosion
TL;DR: In this paper, the current state of the understanding of TLC and highlights several important knowledge gaps are discussed, as well as the main TLC mitigation methods used for the design of new pipelines and for asset integrity management.
Journal Article
Internal Corrosion Direct Assessment Methodology For Liquid Petroleum Pipelines
TL;DR: This NACE International standard represents a consensus of those individual members who have reviewed this document, its scope, and provisions as discussed by the authors, and its acceptance does not in any respect preclude anyone, whether he or she has adopted the standard or not, from manufacturing, marketing, purchasing, or using products, processes or procedures not in conformance with this standard.
Journal ArticleDOI
Effects of CO2 and H2S on Corrosion of Martensitic Steels in Brines at Low Temperature
Ruishu Feng,Justin Beck,Derek M. Hall,Aysel Buyuksagis,Margaret Ziomek-Moroz,Serguei N. Lvov +5 more
TL;DR: Corrosion studies were conducted for martensitic carbon steels in 5-wt% NaCl brine solutions at 4°C and 10MPa (1,450psi) as discussed by the authors.
Journal ArticleDOI
Effect of Alloying Elements on the Corrosion Behavior of Carbon Steel in CO2 Environments
TL;DR: In this paper, the effect of alloying elements (Cr, Mo, and Cu) on the corrosion behavior of low carbon steel in CO2 environments was evaluated by linear polarization resistance measurements.
Journal ArticleDOI
High-Temperature Electrochemical Corrosion of Ultra-High Strength Carbon Steel in H2S-Containing Alkaline Brines
TL;DR: In this article, high-temperature corrosion of ultra-high strength low-alloy carbon steel, grade UD-165, was investigated using in situ electrochemical techniques in H 2 S-containing alkaline brines (5 ¼wt% NaCl; pH 8.1, 9.8, and 10.8) at 200°C.
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.
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.