论阴极极化对碱性溶液中碳钢氯化物阈值的影响

IF 1.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials and Corrosion-werkstoffe Und Korrosion Pub Date : 2024-09-12 DOI:10.1002/maco.202414601

Konstantin Fache, Sylvia Keßler, Jörg Harnisch

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引用次数: 0

摘要

本研究调查了阴极极化对碱性溶液中碳钢氯化物阈值（CT）的影响，类似于埋入混凝土中的钢筋，重点是作为腐蚀起始关键因素的电化学钢势。这项研究结合了文献综述和恒电位测试，揭示了在阳极电位高于 -200 mVSCE 时，CT 与电位无关，而在阴极电位高于 -200 mVSCE 时，CT 会增加。在阴极极化条件下观察到的 CT 增加可归因于被动层成分的改变，从而证明存在不同的电位区域来控制腐蚀的发生。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

On the Impact of Cathodic Polarization on the Chloride Threshold of Carbon Steel in Alkaline Solutions

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On the Impact of Cathodic Polarization on the Chloride Threshold of Carbon Steel in Alkaline Solutions

This study investigates the influence of cathodic polarization on the chloride threshold (C_T) for carbon steel in alkaline solutions, analogous to reinforcing steel embedded in concrete, with a focus on the electrochemical steel potential as a critical factor for corrosion initiation. The research, incorporating a literature review and potentiostatic tests, reveals that C_T shows potential independence at potentials more anodic than −200 mV_SCE and increases for potentials more cathodic than −200 mV_SCE. The observed increase in C_T under cathodic polarization is attributed to alterations in the passive layer composition, supporting the existence of distinct potential regions that govern the onset of corrosion.

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来源期刊

Materials and Corrosion-werkstoffe Und Korrosion 工程技术-材料科学：综合

CiteScore

3.70

自引率

11.10%

发文量

199

审稿时长

1.4 months

期刊介绍： Materials and Corrosion is the leading European journal in its field, providing rapid and comprehensive coverage of the subject and specifically highlighting the increasing importance of corrosion research and prevention. Several sections exclusive to Materials and Corrosion bring you closer to the current events in the field of corrosion research and add to the impact this journal can make on your work.