Yunxiang Chen, X. Xia, Yao Huang, Y. Hong, Deyuan Lin, Yanjin Lu
{"title":"Comparison study of rust layers formed on Q420 and weathering steel after 6 years of exposure in marine atmospheres","authors":"Yunxiang Chen, X. Xia, Yao Huang, Y. Hong, Deyuan Lin, Yanjin Lu","doi":"10.1051/metal/2022008","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":18527,"journal":{"name":"Metallurgical Research & Technology","volume":"30 1","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metallurgical Research & Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1051/metal/2022008","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
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.
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.
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