SML,ERW管线钢在海泥中的腐蚀行为

魏华

doi:10.61558/2993-074X.1660

电化学 >

2005 , Vol. 11 >Issue 3: 314 - 318

DOI: https://doi.org/10.61558/2993-074X.1660

研究论文

SML,ERW管线钢在海泥中的腐蚀行为

魏华

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中国海洋大学化学化工学院,中国科学院海洋研究所,中国海洋大学化学化工学院,中国科学院海洋研究所山东青岛266003 ,山东青岛266071,中国科学院研究生院,北京100039 ,山东青岛266003 ,山东青岛266071

收稿日期: 2005-08-28

修回日期: 2005-08-28

网络出版日期: 2005-08-28

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Corrosion Behavior of SML,ERW Pipeline Steels Exposed to Seamud

WEIHua~

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(1),WANG Xiu-tong~(2, 3) ,GAO Rong-jie ~(1),LI Yan~(*2)(1. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao266003, China,2.Institute Of Oceanology,Chinese Academy of Sciences, Qingdao 266071, China,3.Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Received date: 2005-08-28

Revised date: 2005-08-28

Online published: 2005-08-28

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摘要

应用线性极化电阻,极化曲线和电化学阻抗测量技术,研究了API Spec X60两种管线钢,即ERW(电阻焊管)和SML(无缝钢管)在中国东海长江口地区不同类型海泥中的电化学腐蚀行为.结果表明,SML管线钢的耐蚀性明显优于ERW管线钢,管线钢在海泥中的腐蚀行为主要受阴极去极化剂-氧的扩散控制.

关键词： 管线钢; 海泥; 腐蚀

本文引用格式

魏华 . SML,ERW管线钢在海泥中的腐蚀行为[J]. 电化学, 2005 , 11(3) : 314 -318 . DOI: 10.61558/2993-074X.1660

Abstract

The corrosion behavior of API Spec X60 pipeline steels, including electric resistance welding(ERW) and Seamless (SML) types,in sea mud gathered fromYangtse River estuaryof the East China Sea was investigatedthrough linear polarization resistance, potentio-dynamic polarizationand electrochemical impedance measurements.The result indicate the improved corrosion resistance of SML in sea mud. The oxygen diffusion in the cathode zone determines the corrosion behavior of pipeline steel in sea mud.

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