Corrosion Behavior of 16Mn Steel under Wet and Dry Cycles

	Corrosion Behavior of 16Mn Steel under Wet and Dry Cycles
	Liu, J. G.1; Li, Z. L.1; Li, Y. T.2; Hou, B. R.2; Liu, JG (reprint author), China Univ Petr, Qingdao Key Lab Circle Sea Oil & Gas Storage & Tr, Coll Pipeline & Civil Engn, Qingdao, Peoples R China.
	2014-12-01
发表期刊	INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
卷号	9 期号:12 页码:8175-8181
文章类型	Article
摘要	Compared with immersion samples, the corrosion process of 16Mn steel under wet-dry cyclic condition was studied with polarization curves. The corrosion microstructure and rusts were characterized by Scanning Electron Microscope and X-ray diffraction. The corrosion rate of the wet-dry sample was about 5 times of the immersion sample. The immersion sample was composed of loose, porous gamma-FeOOH mainly while the wet-dry sample was composed of fragmented flaky and cracked gamma-FeOOH and Fe3O4 mainly. The reason, why the wet-dry samples suffered from serious corrosion, was the alternation of wetting and drying. During the drying process, the electrolyte thickness decreased. Oxygen would be much easier to diffuse into the interface of electrolyte and metal, which improved the cathodic reduction process. Except for this, the rust, Fe3O4 and gamma-FeOOH, took part in the corrosion processes and hence increased the corrosion rate of the wet-dry sample. This is a self-circulation process of chemical oxidation and electrochemical reduction.
关键词	Wet-dry Cyclic Immersion Corrosion 16mn Steel Seawater
学科领域	Electrochemistry
收录类别	SCI
语种	英语
WOS记录号	WOS:000345261900116
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/23861
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Liu, JG (reprint author), China Univ Petr, Qingdao Key Lab Circle Sea Oil & Gas Storage & Tr, Coll Pipeline & Civil Engn, Qingdao, Peoples R China.
作者单位	1.China Univ Petr, Qingdao Key Lab Circle Sea Oil & Gas Storage & Tr, Coll Pipeline & Civil Engn, Qingdao, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Liu, J. G.,Li, Z. L.,Li, Y. T.,et al. Corrosion Behavior of 16Mn Steel under Wet and Dry Cycles[J]. INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,2014,9(12):8175-8181.
APA	Liu, J. G.,Li, Z. L.,Li, Y. T.,Hou, B. R.,&Liu, JG .(2014).Corrosion Behavior of 16Mn Steel under Wet and Dry Cycles.INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE,9(12),8175-8181.
MLA	Liu, J. G.,et al."Corrosion Behavior of 16Mn Steel under Wet and Dry Cycles".INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE 9.12(2014):8175-8181.

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