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The effect of carbon within corrosion pits of iron in chloride solutions
Xu, Weichen1,2; Rayment, Trevor3,4; Davenport, Alison2
2017
Source PublicationCORROSION ENGINEERING SCIENCE AND TECHNOLOGY
Volume52Issue:5Pages:383-390
SubtypeArticle
AbstractIron artificial pits have been used in this work to investigate the effect of a carbon-based black layer that can form within a pit during iron dissolution in HCl solutions. Commercial purity iron (99.5%) and high purity iron (99.99+%) have been compared, and a black layer has been observed only in the 99.5% iron pit. It has been found that the formation of a black layer within an iron artificial pit is potential dependent: it can form at applied voltages below 0.2 V(SCE), but not at 0.6 V(SCE). The presence of a black layer can decrease the rate of mass transport inside a pit, which may help to maintain the aggressive acidic solution in an active pit. This effect has been characterised quantitatively via potentiostatic and potential step methods. In addition, the black layer has also been found to induce a small extra resistance in the solution.
KeywordIron Artificial Pit Carbon Solid Corrosion Product
DOI10.1080/1478422X.2017.1304618
Indexed BySCI
Language英语
WOS IDWOS:000402118200008
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/137106
Collection海洋环境腐蚀与与生物污损重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
2.Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England
3.Diamond Light Source Ltd, Oxford, Oxon, England
4.Univ Birmingham, Sch Chem, Birmingham, W Midlands, England
Recommended Citation
GB/T 7714
Xu, Weichen,Rayment, Trevor,Davenport, Alison. The effect of carbon within corrosion pits of iron in chloride solutions[J]. CORROSION ENGINEERING SCIENCE AND TECHNOLOGY,2017,52(5):383-390.
APA Xu, Weichen,Rayment, Trevor,&Davenport, Alison.(2017).The effect of carbon within corrosion pits of iron in chloride solutions.CORROSION ENGINEERING SCIENCE AND TECHNOLOGY,52(5),383-390.
MLA Xu, Weichen,et al."The effect of carbon within corrosion pits of iron in chloride solutions".CORROSION ENGINEERING SCIENCE AND TECHNOLOGY 52.5(2017):383-390.
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