Unraveling short-term O2 contamination on under deposit corrosion of X65 pipeline steel in CO2 saturated solution

He, Limin; Zhang, Qiliang; Chen, Wanbin; Wang, Yihan; Wang, Mingyu; Huang, Yi; Xu, Yunze

doi:10.1016/j.corsci.2024.112113

Cited by 6 publications

(1 citation statement)

References 46 publications

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“…Additionally, in all oxygen-free systems, the corrosion rate is half that of oxygen-containing systems. The presence of O 2 in the system significantly increases the corrosion rate, consistent with previous research results [10]. Increasing pressure directly alters the solubility of gases in the system, leading to more corrosive gases such as CO 2 dissolving into the water, increasing the concentration of substances involved in the corrosion reaction, thereby accelerating the reaction process.…”

Section: Mass Loss Tests and Surface Characterizationsupporting

confidence: 90%

Revealing the Mechanism of O2 and Pressure Effects on the Corrosion of X80 Carbon Steel Under Supercritical CO2 Conditions

Liu,

Wang,

Xue

et al. 2024

JENR

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Pipeline transportation is widely used due to its ability to improve the efficiency of CO2 transportation in Carbon Capture, Utilization, and Storage (CCUS). Within the transport pipelines, CO2 fluid exists in a supercritical state and often contains various impurity gases such as O2 and H2O, which can easily cause steel corrosion, affecting the safety of pipeline operations. In this investigation, we examine the corrosion behavior of X80 carbon steel within a water-saturated supercritical CO2 environment utilizing weight loss experiments, electrochemical tests, and surface analysis techniques. Furthermore, we explore the impact of pressure and oxygen on the corrosion process of X80 steel. The results indicated that X80 steel underwent severe corrosion under the experimental conditions, with FeCO3 as the primary corrosion product. Both the introduction of oxygen and an increase in pressure accelerated the steel's corrosion, and the addition of oxygen led to the formation of a new corrosion product, Fe2O3. Electrochemical test results showed that changes in pressure did not significantly alter the electrochemical corrosion characteristics of the steel, but the introduction of oxygen decreased the electrochemical reaction resistance of X80 steel. Combined with surface analysis, the following conclusions were drawn: In a 50°C supercritical CO2 environment, the anode reaction of X80 steel corrosion is the active dissolution of iron, while the cathode reaction involves the dissolution and ionization of CO2. Changes in pressure do not alter the corrosion mechanism, but the introduction of oxygen leads to oxygen corrosion reactions in the system, accelerating the anode reaction rate and thus increasing the degree of corrosion.

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Section: Mass Loss Tests and Surface Characterizationsupporting

confidence: 90%

Revealing the Mechanism of O2 and Pressure Effects on the Corrosion of X80 Carbon Steel Under Supercritical CO2 Conditions

Liu,

Wang,

Xue

et al. 2024

JENR

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Effect of Temperature and Oxygen Concentration on Corrosion of J55 Steel in an O₂/CO₂ Environment

Ma,

Yu,

Jia

et al. 2024

Materials & Corrosion

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The corrosion product competition and transformation process of J55 under an O2/CO2 environment in the temperature range of 50–350°C and 0–1 MPa oxygen partial pressure range, respectively, were studied using electrochemical and surface analysis techniques as well as thermodynamic calculations to determine its corrosion rate change law and pitting corrosion phenomenon. This study demonstrates that the uniform corrosion rate of J55 with increasing temperature shows a trend of first increasing, then decreasing, and finally increasing. The transformation of its corrosion products, from FeCO3 into Fe3O4, is consistent with the altering corrosion rate law with increasing temperatures. J55 corrodes faster at 350°C as the O2 partial pressure increases. When the O2 partial pressure is low, the predominant kind of corrosion product that is obtained is FeCO3; when the O2 partial pressure exceeds 0.2 MPa, all corrosion products are transformed into iron oxides. As the oxygen partial pressure increases, J55's corrosion product film becomes increasingly less protective of the substrate, making the substance more vulnerable to corrosion reactions.

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Investigation on localized corrosion behavior of pipeline steel under AC interference in alkaline earth metal environment using wire beam electrode

Chen,

Du,

Liu

et al. 2024

Journal of Electroanalytical Chemistry

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Unraveling short-term O2 contamination on under deposit corrosion of X65 pipeline steel in CO2 saturated solution

Cited by 6 publications

References 46 publications

Revealing the Mechanism of O<sub>2</sub> and Pressure Effects on the Corrosion of X80 Carbon Steel Under Supercritical CO<sub>2</sub> Conditions

Revealing the Mechanism of O<sub>2</sub> and Pressure Effects on the Corrosion of X80 Carbon Steel Under Supercritical CO<sub>2</sub> Conditions

Effect of Temperature and Oxygen Concentration on Corrosion of J55 Steel in an O₂/CO₂ Environment

Investigation on localized corrosion behavior of pipeline steel under AC interference in alkaline earth metal environment using wire beam electrode

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Unraveling short-term O2 contamination on under deposit corrosion of X65 pipeline steel in CO2 saturated solution

Cited by 6 publications

References 46 publications

Revealing the Mechanism of O&lt;sub&gt;2&lt;/sub&gt; and Pressure Effects on the Corrosion of X80 Carbon Steel Under Supercritical CO&lt;sub&gt;2&lt;/sub&gt; Conditions

Revealing the Mechanism of O&lt;sub&gt;2&lt;/sub&gt; and Pressure Effects on the Corrosion of X80 Carbon Steel Under Supercritical CO&lt;sub&gt;2&lt;/sub&gt; Conditions

Effect of Temperature and Oxygen Concentration on Corrosion of J55 Steel in an O2/CO2 Environment

Investigation on localized corrosion behavior of pipeline steel under AC interference in alkaline earth metal environment using wire beam electrode

Contact Info

Product

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About

Revealing the Mechanism of O<sub>2</sub> and Pressure Effects on the Corrosion of X80 Carbon Steel Under Supercritical CO<sub>2</sub> Conditions

Revealing the Mechanism of O<sub>2</sub> and Pressure Effects on the Corrosion of X80 Carbon Steel Under Supercritical CO<sub>2</sub> Conditions

Effect of Temperature and Oxygen Concentration on Corrosion of J55 Steel in an O₂/CO₂ Environment