Research on the Metal Corrosion Process in the Sea Mud/Seawater/Atmosphere Interface Zone

doi:10.3390/coatings10121219

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	Research on the Metal Corrosion Process in the Sea Mud/Seawater/Atmosphere Interface Zone
	Chen, Zhiwei 1,2; Xia, Wenting 1,2; Yao, Caiqi 1,2; Lin, Zhifeng 1,2; Zhang, Wei 1,2; Li, Weihua 1,2,3
刊名	COATINGS
	2020-12-01
卷号	10 期号:12 页码:10
关键词	metal corrosion sea mud seawater atmosphere interface zone wire beam electrode oxygen concentration cell waterline effect
DOI	10.3390/coatings10121219
通讯作者	Zhang, Wei(zhangw286@mail.sysu.edu.cn)
英文摘要	Corrosion in the interface zone is a complicated local corrosion phenomenon. The conventional single-electrode method finds it difficult to obtain the kinetic information of corrosion occurrence and development process. In this paper, metal corrosion was studied by Wire Beam Electrode (WBE) technology on the interfaces of sea mud/seawater and seawater/atmosphere. The study found that the metal corrosion in the interface is a process of coupling a dual corrosion cell into a single corrosion cell. Initially, a corrosion cell is formed with the seawater/atmosphere interface acting as the cathode and the upper part of the metal in the seawater area as the anode. This is due to the oxygen concentration cell caused by the waterline effect. The cathode area is always enriched near the seawater/atmosphere interface. The lower part of the metal in the seawater area and the metal in the sea mud area are the anode and the cathode, respectively, of another corrosion cell. Along with the immersion time, the anodic area of the first corrosion cell gradually extends to the lower part of the metal in the seawater zone and finally the sea mud zone, resulting in the disappearance of the second corrosion cell. In the single corrosion cell stage, the seawater/atmosphere interface is the cathode area; the seawater area and the sea mud area are the anode areas, and the electrode adjacent to the cathode area becomes the anode area with the largest current density. During the whole experiment, the sea mud zone is a process of polarity transition from the cathode zone to the anode zone, and finally forms the anode zone of the whole electrode together with the anode zone in the sea zone.
资助项目	National Natural Science Foundation of China[51525903] ; National Natural Science Foundation of China[51879292] ; National Natural Science Foundation of China[21203034] ; National Natural Science Foundation of China[51771057] ; GF research and cultivation project of Sun Yat-sen University[76110-18843406]
WOS研究方向	Materials Science
语种	英语
出版者	MDPI
WOS记录号	WOS:000601983500001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/169530]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Zhang, Wei
作者单位	1.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China 2.Sun Yat Sen Univ, Sch Chem Engn & Technol, Zhuhai 519082, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zhiwei,Xia, Wenting,Yao, Caiqi,et al. Research on the Metal Corrosion Process in the Sea Mud/Seawater/Atmosphere Interface Zone[J]. COATINGS,2020,10(12):10.
APA	Chen, Zhiwei,Xia, Wenting,Yao, Caiqi,Lin, Zhifeng,Zhang, Wei,&Li, Weihua.(2020).Research on the Metal Corrosion Process in the Sea Mud/Seawater/Atmosphere Interface Zone.COATINGS,10(12),10.
MLA	Chen, Zhiwei,et al."Research on the Metal Corrosion Process in the Sea Mud/Seawater/Atmosphere Interface Zone".COATINGS 10.12(2020):10.