电化学方法研究海底管线腐蚀行为
An Electrochemical Study on Corrosion Behavior of Submarine Pipe
摘 要
模拟了海底管线的腐蚀情况, 并利用极化曲线及电化学阻抗技术, 研究了试验六个月情况下试片的腐蚀规律。结果表明, 试样在开放的海水介质中靠近裂缝处腐蚀速率较快, 远离裂缝处腐蚀速率相对较慢。而在模拟海底的试验环境下, 管线腐蚀规律与开放海水中测量的结果相反, 即靠近裂缝处腐蚀相对较慢, , 远离裂缝处腐蚀相对较快。
腐蚀
裂纹
电化学试验
submarine pipeline
corrosion
crack
electrochemical test
Abstract
Corrosion law of submarine pipeline was studied by polarization curves and electrochemical impedance spectroscopy (EIS). The results showed that in the open seawater corrosion rate of samples was rapid and severe near the cracks, but was relatively light the corrosion away from cracks. In the simulated seabed testing environment, an opposite corrosion law was shown, the nearer the samples from the cracks, the slower the corrosion rate.
中图分类号 TG174.3
所属栏目 试验研究
基金项目 中国科学院知识创新工程重要方向项目(No.KZCX2-YW-210), 国家科技支撑计划项目(2007BAB27B01)
收稿日期 2010/10/19
修改稿日期 2010/11/5
网络出版日期
作者单位点击查看
联系人作者李言涛(ytli98@163.com)
备注李言涛, 副研究员, 博士,
引用该论文: JIANG Xin-de,LI Yan-tao,DU Fang-lin,HOU Bao-rong. An Electrochemical Study on Corrosion Behavior of Submarine Pipe[J]. Corrosion & Protection, 2011, 32(8): 601
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参考文献
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【2】刘振国, 马良. 海底管道检测技术[J]. 中国海洋平台, 1994, 9(6):160-164.
【3】侯涛, 安国亭. 海底管道损伤的原因分析及修复[J]. 中国海洋平台, 2002, 17(4):37-39.
【4】Mark Burton. Options for deepwater repair of pipes and flanges-Part II[J]. Pipes and Pipelines International, 2001, 46(4):31-34.
【5】周晶, 陈严飞, 李昕. 复杂荷载作用下海底腐蚀管线破坏机理研究进展[J]. 海洋工程, 2008, 26(1):831-841.
【6】Hopkin P, Jones D G. A study of the behavior of long and complex shaped corrosion intransmission pipelines[C]//Proceedings of Offshore Mechanic and Arcticengineering, 1992.
【7】刘永杰, 邓卫东, 党舸. 南海番禺气田海底管线内腐蚀评价与预测[J]. 石油化工腐蚀与防护, 2008, 25(4):20-21.
【8】Luo L R. Sensors based on galvanic cell generated electrochemiluminescence and its application[J]. Analytica Chimica Acta, 2006(580):14-17.
【9】Pan J, Leygraf C, Tersson R F A J P, et al. Characterization of high-temperature oxide films on stainless steels by electrochemical-impedance spectroscopy[J]. Oxidation of Metals, 1998, 50:431-455.
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