Corrosion behaviour of steel in beach soil along Bohai Bay

doi:10.1179/174327807X234633

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	Corrosion behaviour of steel in beach soil along Bohai Bay
	Li, Y. T.
刊名	CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
	2009-04-01
卷号	44 期号:2 页码:91-95
关键词	Pipeline Steel Carbon Steel Beach Soil Corrosion
ISSN号	1478-422X
DOI	10.1179/174327807X234633
文献子类	Article
英文摘要	Research on corrosion of steel structures in various marine environments is essential to assure the safety of structures and can effectively prolong their service life. In order to provide data for anticorrosion design of oil exploitation structures in the Bohai Bay, the corrosion behaviour and properties of steel in beach soil, using typical steel samples (Q235A carbon steel and API 5Lx52 pipeline steel) buried 0.5, 1.0 and 1.5 m deep under typical beach soils in Tanggu, Yangjiaogou, Xingcheng, Yingkou and Chengdao for 1-2 years were studied. The carbon steel and pipeline steel were both corroded severely in the beach soil, with the form of corrosion being mainly uniform with some localised attack (pitting corrosion). The corrosion rate of the carbon steel was up to 0.16 mm/year with a maximum penetration depth of 0.76 mm and that of the pipeline steel was up to 0.14 mm/year, with a maximum penetration depth of 0.53 mm. Compared with carbon steel, the pipeline steel generally had better corrosion resistance in most test beach soils. The corrosion rates and the maximum corrosion depths of carbon steel and pipeline steel were in the order: Tanggu>Xingcheng>Chengdao>Yingkou>Yangjiaogou with corrosion altering with depth of burial. The corrosion of steel in the beach soil involves a mixed mechanism with different degrees of soil aeration and microbial activity present. It is concluded that long term in situ plate laying experiments must be carried out to obtain data on steel corrosion in this beach soil environment so that the effective protection measures can be implemented.; Research on corrosion of steel structures in various marine environments is essential to assure the safety of structures and can effectively prolong their service life. In order to provide data for anticorrosion design of oil exploitation structures in the Bohai Bay, the corrosion behaviour and properties of steel in beach soil, using typical steel samples (Q235A carbon steel and API 5Lx52 pipeline steel) buried 0.5, 1.0 and 1.5 m deep under typical beach soils in Tanggu, Yangjiaogou, Xingcheng, Yingkou and Chengdao for 1-2 years were studied. The carbon steel and pipeline steel were both corroded severely in the beach soil, with the form of corrosion being mainly uniform with some localised attack (pitting corrosion). The corrosion rate of the carbon steel was up to 0.16 mm/year with a maximum penetration depth of 0.76 mm and that of the pipeline steel was up to 0.14 mm/year, with a maximum penetration depth of 0.53 mm. Compared with carbon steel, the pipeline steel generally had better corrosion resistance in most test beach soils. The corrosion rates and the maximum corrosion depths of carbon steel and pipeline steel were in the order: Tanggu>Xingcheng>Chengdao>Yingkou>Yangjiaogou with corrosion altering with depth of burial. The corrosion of steel in the beach soil involves a mixed mechanism with different degrees of soil aeration and microbial activity present. It is concluded that long term in situ plate laying experiments must be carried out to obtain data on steel corrosion in this beach soil environment so that the effective protection measures can be implemented.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
URL标识	查看原文
语种	英语
WOS记录号	WOS:000266342400002
公开日期	2010-12-21
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/2255]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
作者单位	Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Li, Y. T.. Corrosion behaviour of steel in beach soil along Bohai Bay[J]. CORROSION ENGINEERING SCIENCE AND TECHNOLOGY,2009,44(2):91-95.
APA	Li, Y. T..(2009).Corrosion behaviour of steel in beach soil along Bohai Bay.CORROSION ENGINEERING SCIENCE AND TECHNOLOGY,44(2),91-95.
MLA	Li, Y. T.."Corrosion behaviour of steel in beach soil along Bohai Bay".CORROSION ENGINEERING SCIENCE AND TECHNOLOGY 44.2(2009):91-95.