Steel dissolution in carbonate environments

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

Corrosion Science Pub Date : 2025-04-24 DOI:10.1016/j.corsci.2025.112899

F.E. Furcas , S. Mundra , F. Somaini , O.B. Isgor , U.M. Angst

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引用次数: 0

Abstract

The electrochemical dissolution of carbon steel exposed to aqueous carbonates stands as one of the main causes for the deterioration of carbon capture, utilisation and storage facilities, pipelines, hydrocarbon refining equipment and reinforced concrete structures. To unlock the full potential of carbon capture applications and ensure the structural integrity of existing chemical processing and civil infrastructure, a thorough understanding of the mechanism of steel dissolution is needed. Here, we leverage advancements in thermodynamic modelling calculations to re-evaluate the stability of the

-C-H₂O system. In combination with electrochemical measurements under controlled hydrodynamic conditions, we show that the electrochemical dissolution in the form of the iron carbonate complex

is solely controlled by the pH dependent carbonate equilibrium. The resultant kinetic mechanism is in full agreement with the experimentally obtained dissolution rates and the thermodynamic calculations. We envision the here used methodology to be applied to the dissolution of other metals exposed to a broad range of electrolyte compositions.

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钢在碳酸盐环境中的溶解

碳钢暴露在碳酸盐水溶液中的电化学溶解是导致碳捕获、利用和储存设施、管道、碳氢化合物精炼设备和钢筋混凝土结构恶化的主要原因之一。为了释放碳捕获应用的全部潜力，并确保现有化学加工和民用基础设施的结构完整性，需要彻底了解钢的溶解机制。在这里，我们利用热力学建模计算的进步来重新评估-C-H2O系统的稳定性。结合受控流体动力条件下的电化学测量，我们表明以碳酸铁配合物形式的电化学溶解完全由pH依赖的碳酸盐平衡控制。所得的动力学机制与实验得到的溶解速率和热力学计算完全一致。我们设想这里使用的方法可以应用于暴露于广泛电解质组合物的其他金属的溶解。

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.