Q420与耐候钢在海洋大气中曝露6年后锈层形成的对比研究

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

Metallurgical Research & Technology Pub Date : 2022-01-01 DOI:10.1051/metal/2022008

Yunxiang Chen, X. Xia, Yao Huang, Y. Hong, Deyuan Lin, Yanjin Lu

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引用次数: 0

摘要

本文研究了Q420和耐候钢(WS)在福建平潭海洋大气中暴露6年后形成的腐蚀产物。利用扫描电镜(SEM)观察了锈层的表面形貌和横截面形貌的演变，并用XRD对Q420和WS的组成相进行了检测。通过电化学试验研究了锈层对钢的保护作用。失重结果表明，Q420的腐蚀速率相对高于WS钢。SEM观察表明，Q420钢经过长时间的暴露后，WS钢形成相对致密，裂纹较少。电化学试验结果表明，Q420钢在初始阶段形成的锈层比后期形成的锈层具有更好的保护作用，而WS钢在后期形成的锈层具有更好的保护作用。

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Comparison study of rust layers formed on Q420 and weathering steel after 6 years of exposure in marine atmospheres

In this study, the corrosion products formed on Q420 and weathering steel (WS) after 6 years of exposure in marine atmospheres in Pingtan, Fujian Province in China was examined. The evolution of the rust layers in terms of surface and cross-sectional morphologies were observed by SEM, while the consisted phases on the Q420 and WS were detected by XRD. The protective effect of the rust layers on the steels was studied by the electrochemical tests. The results of weight loss indicated that the Q420 had a relatively higher corrosion rate than that of the WS steel. The SEM observation showed that the WS steel could form a relative compact with fewer cracks after a long time of exposure concerning the Q420 steel. The electrochemical tests suggested the rust layer formed in the initial stage for the Q420 steel showed a better protective effect than that one formed at a later stage, whereas a better protective effect of the rust layer was formed at the later stage for the WS steels.

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来源期刊

Metallurgical Research & Technology METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

1.70

自引率

9.10%

发文量

审稿时长

4.4 months

期刊介绍： Metallurgical Research and Technology (MRT) is a peer-reviewed bi-monthly journal publishing original high-quality research papers in areas ranging from process metallurgy to metal product properties and applications of ferrous and non-ferrous metals and alloys, including light-metals. It covers also the materials involved in the metal processing as ores, refractories and slags. The journal is listed in the citation index Web of Science and has an Impact Factor. It is highly concerned by the technological innovation as a support of the metallurgical industry at a time when it has to tackle severe challenges like energy, raw materials, sustainability, environment... Strengthening and enhancing the dialogue between science and industry is at the heart of the scope of MRT. This is why it welcomes manuscripts focusing on industrial practice, as well as basic metallurgical knowledge or review articles.