IOCAS-IR  > 海洋环境腐蚀与与生物污损重点实验室
Research on the Metal Corrosion Process in the Sea Mud/Seawater/Atmosphere Interface Zone
Chen, Zhiwei1,2; Xia, Wenting1,2; Yao, Caiqi1,2; Lin, Zhifeng1,2; Zhang, Wei1,2; Li, Weihua1,2,3
2020-12-01
Source PublicationCOATINGS
Volume10Issue:12Pages:10
Corresponding AuthorZhang, Wei(zhangw286@mail.sysu.edu.cn)
AbstractCorrosion 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.
Keywordmetal corrosion sea mud seawater atmosphere interface zone wire beam electrode oxygen concentration cell waterline effect
DOI10.3390/coatings10121219
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMaterials Science
WOS SubjectMaterials Science, Coatings & Films
WOS IDWOS:000601983500001
PublisherMDPI
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/169531
Collection海洋环境腐蚀与与生物污损重点实验室
Corresponding AuthorZhang, Wei
Affiliation1.Sun Yat Sen Univ, Sch Chem Engn & Technol, Zhuhai 519082, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
Recommended Citation
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.
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