低碳钢在氯化物溶液中的原位定量形貌测量和腐蚀行为

IF 1.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Engineering, Science and Technology Pub Date : 2023-08-17 DOI:10.1080/1478422X.2023.2242654

Ebenezer O. Fanijo, Joseph G. Thomas, Yizheng Zhu, W. Cai, A. Brand

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引用次数: 0

摘要

摘要本研究应用一种新的原位光谱调制干涉测量技术（SMI）对低碳钢表面的时空腐蚀动力学进行了定量测量。3D地形图显示，在无氯化物溶液的作用下，表面早期形成局部浅坑。相反，在富含氯化物的溶液中的钢样品显示出早期微裂纹或晶间缺陷位点。高度剖面数据的定量分析（从SMI获得）验证了这些样品易受点蚀和晶间腐蚀行为影响的腐蚀过程的不均匀性。估计的体积损失遵循与3D表面地形数据类似的趋势。尽管如此，与从电化学数据获得的空隙体积相比，观察到体积损失的明显行为。

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In situ quantitative topographic measurement and corrosion behaviour of low carbon steel in chloride solutions

ABSTRACT This study applied a novel in situ spectral modulation interferometry (SMI) technique to quantitatively measure the spatiotemporal corrosion kinetics on the surface of low carbon steel. The 3D topography map showed an early formation of localised shallow pits on the surface subjected to a chloride-free solution. In contrast, the steel samples in chloride-enriched solution revealed early-age microcracks or intergranular defective sites. The quantitative analysis of the height profile data (acquired from SMI) verified the heterogeneity of the corrosion process of these samples susceptible to pitting corrosion and intergranular corrosion behaviour. The estimated volume loss followed a similar trend to the 3D surface topography data. Still, a distinct behaviour in the volume loss was observed when compared to the void volume obtained from the electrochemical data.

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来源期刊

Corrosion Engineering, Science and Technology 工程技术-材料科学：综合

CiteScore

3.20

自引率

5.60%

发文量

审稿时长

3.4 months

期刊介绍： Corrosion Engineering, Science and Technology provides broad international coverage of research and practice in corrosion processes and corrosion control. Peer-reviewed contributions address all aspects of corrosion engineering and corrosion science; there is strong emphasis on effective design and materials selection to combat corrosion and the journal carries failure case studies to further knowledge in these areas.