A mechanistic model for the corrosion prediction of bare carbon steel in supercritical CO2-H2S-Cl- environments

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-07-05 DOI:10.1016/j.corsci.2025.113161

Tiancong Ding, Chong Sun, Jianbo Sun, Yufan Chen, Xiaofeng Zhao, Weimin Zhao, Xueqiang Lin

引用次数: 0

Abstract

In this study, a water chemistry model applicable to supercritical CO₂-H₂S-Cl^- environments is developed to quantitatively characterize the species information in solution. Based on this, the electrochemical corrosion thermodynamic and kinetic models are established to determine possible electrode reactions and predict the corrosion rate of bare carbon steel. The accuracy and reliability of corrosion prediction model are validated by the results of high-pressure electrochemical tests. The contributions of various cathodic reactions to corrosion and their rate-determining steps are determined by the mechanistic model. Concurrently, the role of H₂S in altering the electrochemical reaction mechanism of bare carbon steel is elucidated.

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裸碳钢在超临界CO2-H2S-Cl-环境中腐蚀预测的机理模型

本研究建立了一个适用于超临界CO2-H2S-Cl-环境的水化学模型，以定量表征溶液中的物种信息。在此基础上，建立了电化学腐蚀热力学和动力学模型，以确定可能的电极反应并预测裸碳钢的腐蚀速率。高压电化学试验结果验证了腐蚀预测模型的准确性和可靠性。通过机理模型确定了各种阴极反应对腐蚀的贡献及其速率决定步骤。同时阐明了H2S对裸碳钢电化学反应机理的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.