Coupling Effect of Precipitates and Hydrogen on Pitting Corrosion of Stainless Steel

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Pub Date : 2024-06-12 DOI:10.5006/4549

Ming Liu, Guanghu Yao, Xuehan Wang, Lining Xu, Lang Jiao, Hang Su, Anqing Fu

引用次数: 0

Abstract

This study investigated the coupling effect of hydrogen and precipitates on the initiation of pitting using HR3C stainless steel with large NbCrN precipitates as the study material. Stainless steel exhibited good resistance to pitting when not subject to hydrogen charging. Hydrogen charging significantly reduced the corrosion resistance and stability of the passive film. Results obtained using the hydrogen microprint technique revealed that hydrogen was enriched within NbCrN precipitates and along the precipitate–substrate interface. Through immersion experiments, we discovered that pits preferentially initiated at the precipitate–substrate interface because it had weaker corrosion resistance than the precipitates.

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析出物和氢对不锈钢点腐蚀的耦合效应

本研究以含有大量铌铬镍析出物的 HR3C 不锈钢为研究材料，探讨了氢和析出物对点蚀引发的耦合效应。不锈钢在未充氢时表现出良好的抗点蚀性。充氢明显降低了被动膜的耐腐蚀性和稳定性。使用氢显微印迹技术获得的结果显示，氢在 NbCrN 沉淀内部以及沿沉淀-基底界面富集。通过浸泡实验，我们发现，由于析出物-基底界面的耐腐蚀性弱于析出物，因此凹坑更倾向于在析出物-基底界面处形成。

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 MATERIALS SCIENCE, MULTIDISCIPLINARY-METALLURGY & METALLURGICAL ENGINEERING

CiteScore

2.80

自引率

12.50%

发文量

审稿时长

3 months

期刊介绍： CORROSION is the premier research journal featuring peer-reviewed technical articles from the world’s top researchers and provides a permanent record of progress in the science and technology of corrosion prevention and control. The scope of the journal includes the latest developments in areas of corrosion metallurgy, mechanisms, predictors, cracking (sulfide stress, stress corrosion, hydrogen-induced), passivation, and CO2 corrosion. 70+ years and over 7,100 peer-reviewed articles with advances in corrosion science and engineering have been published in CORROSION. The journal publishes seven article types – original articles, invited critical reviews, technical notes, corrosion communications fast-tracked for rapid publication, special research topic issues, research letters of yearly annual conference student poster sessions, and scientific investigations of field corrosion processes. CORROSION, the Journal of Science and Engineering, serves as an important communication platform for academics, researchers, technical libraries, and universities. Articles considered for CORROSION should have significant permanent value and should accomplish at least one of the following objectives: • Contribute awareness of corrosion phenomena, • Advance understanding of fundamental process, and/or • Further the knowledge of techniques and practices used to reduce corrosion.