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管线钢在海泥中的腐蚀行为研究
魏华1, 高荣杰1, 王秀通2,3, 李焰2
1.中国海洋大学化学化工学院;2.中国科学院海洋研究所;3.中国科学院研究生院
摘要:
利用线性极化电阻、极化曲线和电化学阻抗测量技术,研究了APISpecX60两种管线钢ERW(电阻焊管)和SML(无缝钢管)在取自中国东海长江口地区的不同类型海泥中的电化学腐蚀行为。结果表明,SML管线钢在海泥中的耐蚀性明显优于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
DOI：
分类号:
基金项目:中国科学院与中国海洋石油总公司科技合作项目
Corrosion behavior of API Spec X60 pipeline steels in seamud
Abstract:
Corrosion behavior of API Spec X60 pipeline steels, including electric resistance welding (ERW) AND SEAMLESS (sml) STEEL PIPES IN SEA MUD IN Changjiang(Yangtse) River estuary of the East China Sea was investigated through linear polarization resistance, potentio-dynamic polarization and electrochemical impedance measurements. The experiments indicated that corrosion resistance of SML is better than that of REW. The corrosion behavior of pipeline steel in sea mud is controlled by oxygen diffusion in cathode zone.
Key words:  pipeline steel  sea mud  corrosion
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