对EIS数据进行DRT分析，识别深层地质处置条件下低碳钢的好氧-厌氧腐蚀演变

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

Corrosion Science Pub Date : 2025-06-17 DOI:10.1016/j.corsci.2025.113118

Youzhi Wang , Shuzhen Qiao , Jingli Xie , Yingmin Wang , Long Hao , Jianqiu Wang , Wei Ke

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引用次数: 0

摘要

深层地质处置条件下低碳钢的好氧-厌氧腐蚀转变是处置容器腐蚀评价的关键。本文利用电化学阻抗谱（EIS）研究了Q345R低碳钢在北山地下水中密封条件下的腐蚀演变行为，并记录了腐蚀电解质的氧化还原电位（Eh）演变。结果表明，EIS数据弛豫时间（DRT）分布分析能较好地识别氧还原反应（ORR）相关的时间常数演化。因此，可以提出基于EIS数据的DRT分析结合Eh监测，适用于电解质腐蚀条件下低碳钢的好氧-厌氧腐蚀转变研究。

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DRT analysis on EIS data to identify aerobic-anaerobic corrosion evolution of low-carbon steel under deep geological disposal condition

The aerobic-anaerobic corrosion transition of low-carbon steel under deep geological disposal conditions is critical in corrosion evaluation of disposal containers. In this work, the corrosion evolution behavior of Q345R low-carbon steel in Beishan underground water under sealed conditions has been investigated by electrochemical impedance spectroscopy (EIS), and besides the redox potential (Eh) evolution of the corrosion electrolyte has been recorded. The results indicate that the distribution of relaxation time (DRT) analysis on EIS data can well identify the oxygen reduction reaction (ORR)-related time-constant evolution. Therefore, it could be proposed that DRT analysis on EIS data combined with Eh monitoring is applicable for the aerobic-anaerobic corrosion transition investigation of low-carbon steel under electrolyte corrosion conditions.

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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.