New insights on the role of CO2 in the mechanism of carbon steel corrosion

Almeida, Tatiana das Chagas; Bandeira, Merlin C. E.; Moreira, R.M.; Mattos, O.R.

doi:10.1016/j.corsci.2017.02.016

Cited by 92 publications

(19 citation statements)

References 20 publications

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“…Later, EIS was used by Mattos et al to verify the effect of different carbon dioxide partial pressures at pH 4. [34] They observed one inductive loop attributed to the adsorption of FeOH intermediates, as it was previously identified by Keddam et al [23,24] Moreover, through an impedance mechanism analysis, the authors showed that at the studied pH, eventual direct adsorption of CO 2 would produce a second inductive loop. Therefore, Mattos et al concluded that no direct adsorption of carbon dioxide on the metal surface occurred, but they did not exclude eventual adsorption of carbon dioxide on other surface intermediate species.…”

Section: Anodic Reactionsupporting

confidence: 55%

The effect of chemical species on the electrochemical reactions and corrosion product layer of carbon steel in CO₂ aqueous environment: A review

Basilico

Marcelin

Mingant

et al. 2021

Materials & Corrosion

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This study summarizes the chemical effects that can occur during the corrosion process of carbon steel in a CO 2 -saturated aqueous environment. Particularly, it focuses more on the results that small chemical contaminations in the environment have on the corrosion process. Underground waters present complex chemistry with several different dissolved ions (chlorides, carbonates) even in high concentrations that impact substantially the corrosion rates of these materials. Moreover, gas impurities present in the gas mixture, such as oxygen in carbon capture and storage applications, constitute a supplementary form of significant contamination in the CO 2 -saturated aqueous environment.In particular, the effect on both electrochemical reactions and corrosion product layer is examined for several chemical species that are commonly present either in the gas mixture or in underground waters.Carbon steel remains the most popular material for industrial applications because of its lower cost with respect to corrosion-resistant alloys. [1,2] Nevertheless, inferior corrosion resistance performances lead to a deep investigation of the corrosion process in various environments. Furthermore, numerous actions were adopted to prevent corrosion rate value to reach unsustainable costs, such as corrosion inhibitors, cathodic protection, and coatings. In relation to a deep knowledge of the corrosion mechanisms, each method of protection has to be designed carefully to successfully address the specific corrosion problem.This bibliographic report concerns the issues related to carbon steel corrosion in a CO 2 water solution, particularly, the effects of some chemical elements of the solution that can impact the mechanism of the electrochemical reactions of the corrosion process. Their effects may be direct or indirect through modifications of the nature of the corrosion product layer (CPL).Understanding and mitigation of CO 2 aqueous corrosion of carbon steels are a major challenge in many industries, such as oil production (including enhanced oil recovery [EOR]), CO 2 capture, transportation, storage and utilization, biofuels refining, and geothermal energy production. Considering the oilfield brines and oils, their composition is quite complex, with a plethora of chemicals that can interact with carbon steel. [3,4] Therefore, a small selection of common water components and those presenting new challenges for carbon capture and storage and geothermal energy production are presented.

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Section: Anodic Reactionsupporting

confidence: 55%

The effect of chemical species on the electrochemical reactions and corrosion product layer of carbon steel in CO₂ aqueous environment: A review

Basilico

Marcelin

Mingant

et al. 2021

Materials & Corrosion

View full text Add to dashboard Cite

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“…In the presence of CO 2 gas, carbon steel is more susceptible to corrosion as compared to those exposed to the deaerated solution [18]. Although CO 2 alone is not hazardous to carbon steel, its interaction with water results in carbonic acid, which induces corrosion [19]. To understand the underlying mechanism, many studies have investigated the influence of CO 2 on the corrosion of carbon steel using different concentrations of NaCl solution [20,21,22] and brines [23,24].…”

Section: Introductionmentioning

confidence: 99%

Corrosion of Carbon Steel in Artificial Geothermal Brine: Influence of Carbon Dioxide at 70 °C and 150 °C

2019

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This study focuses on the corrosion mechanism of carbon steel exposed to an artificial geothermal brine influenced by carbon dioxide (CO2) gas. The tested brine simulates a geothermal source in Sibayak, Indonesia, containing 1500 mg/L of Cl−, 20 mg/L of SO42−, and 15 mg/L of HCO3− with pH 4. To reveal the temperature effect on the corrosion behavior of carbon steel, exposure and electrochemical tests were carried out at 70 °C and 150 °C. Surface analysis of corroded specimens showed localized corrosion at both temperatures, despite the formation of corrosion products on the surface. After 7 days at 150 °C, SEM images showed the formation of an adherent, dense, and crystalline FeCO3 layer. Whereas at 70 °C, the corrosion products consisted of chukanovite (Fe2(OH)2CO3) and siderite (FeCO3), which are less dense and less protective than that at 150 °C. Control experiments under Ar-environment were used to investigate the corrosive effect of CO2. Free corrosion potential (Ecorr) and electrochemical impedance spectroscopy (EIS) confirm that at both temperatures, the corrosive effect of CO2 was more significant compared to that measured in the Ar-containing solution. In terms of temperature effect, carbon steel remained active at 70 °C, while at 150 °C, it became passive due to the FeCO3 formation. These results suggest that carbon steel is more susceptible to corrosion at the near ground surface of a geothermal well, whereas at a deeper well with a higher temperature, there is a possible risk of scaling (FeCO3 layer). A longer exposure test at 150 °C with a stagnant solution for 28 days, however, showed the unstable FeCO3 layer and therefore a deeper localized corrosion compared to that of seven-day exposed specimens.

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“…When CO2 dissolves in water and hydrates to carbonic acid (H2CO3), it promotes an electrochemical reaction between the steel and the aqueous phase, leading to iron dissolution [2][3][4] [5][6] [7]. This process has been under investigation for more than four decades, but the corrosion mechanism occurring at the metal-electrolyte interface is still a subject of research [8] [9]. In addition, precipitation processes of corrosion products or mineral scales can occur, which has a significant influence on the corrosion mechanism.…”

Section: Introductionmentioning

confidence: 99%

Corrosion of carbon steel under CO2 conditions: Effect of CaCO3 precipitation on the stability of the FeCO3 protective layer

et al. 2020

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New insights on the role of CO2 in the mechanism of carbon steel corrosion

Cited by 92 publications

References 20 publications

The effect of chemical species on the electrochemical reactions and corrosion product layer of carbon steel in CO₂ aqueous environment: A review

The effect of chemical species on the electrochemical reactions and corrosion product layer of carbon steel in CO₂ aqueous environment: A review

Corrosion of Carbon Steel in Artificial Geothermal Brine: Influence of Carbon Dioxide at 70 °C and 150 °C

Corrosion of carbon steel under CO2 conditions: Effect of CaCO3 precipitation on the stability of the FeCO3 protective layer

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New insights on the role of CO2 in the mechanism of carbon steel corrosion

Cited by 92 publications

References 20 publications

The effect of chemical species on the electrochemical reactions and corrosion product layer of carbon steel in CO2 aqueous environment: A review

The effect of chemical species on the electrochemical reactions and corrosion product layer of carbon steel in CO2 aqueous environment: A review

Corrosion of Carbon Steel in Artificial Geothermal Brine: Influence of Carbon Dioxide at 70 °C and 150 °C

Corrosion of carbon steel under CO2 conditions: Effect of CaCO3 precipitation on the stability of the FeCO3 protective layer

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The effect of chemical species on the electrochemical reactions and corrosion product layer of carbon steel in CO₂ aqueous environment: A review

The effect of chemical species on the electrochemical reactions and corrosion product layer of carbon steel in CO₂ aqueous environment: A review