Crevice corrosion mechanism of L80-13Cr in Cl- containing supercritical CO2 water-rich phase considering the influence of SO2

IF 3.4 3区工程技术 Q2 CHEMISTRY, PHYSICAL Journal of Supercritical Fluids Pub Date : 2025-03-05 DOI:10.1016/j.supflu.2025.106577

Yu Yuan , Chen Li , Yongyang Zhao , Fengyu Zhang , Yong Xiang

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Abstract

Given that casing materials in CO₂ enhanced oil recovery (EOR) and sequestration processes are exposed to corrosive environments formed by supercritical CO₂ and Cl^–-containing water, with the crevice sensitivity yet to be fully understood, this study investigated the crevice corrosion susceptibility of L80-13Cr in Cl^–-containing supercritical CO₂ water-rich phases using high-pressure autoclave immersion tests. The potential impact of SO₂ impurities in the injected carbon dioxide was also considered. The results revealed that L80-13Cr was at risk of crevice corrosion, which was further promoted by lower pH levels and the presence of SO₂. The severity of corrosion within the crevice was associated with the concentration of cathodic depolarizers in the bulk solution and the stability of the passive film. These findings underscored the necessity of studying crevice corrosion susceptibility and accounting for the influence of impurities in the carbon source under CO₂-EOR and sequestration conditions.

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来源期刊

Journal of Supercritical Fluids 工程技术-工程：化工

CiteScore

7.60

自引率

10.30%

发文量

236

审稿时长

56 days

期刊介绍： The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics. Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.