土壤中宏电池对X70钢腐蚀作用的研究

土壤中宏电池对X70钢腐蚀作用的研究

伍远辉1,2,刘天模1,罗宿星2, 孙成3

1. 重庆大学材料科学与工程学院, 重庆 400045; 2.遵义师范学院化学系,贵州遵义 563002;
3. 中国科学院金属研究所, 金属腐蚀与防护国家重点实验室, 辽宁沈阳 110016

收稿日期:2008-03-03 修回日期:1900-01-01 出版日期:2009-01-24 发布日期:2010-04-15
通讯作者: 伍远辉

WU Yuanhui1,2, LIU Tianmo1, LUO Suxing2, SUN Cheng3

1. School of Material Science and Engineering, Chongqing University, Chongqing 400045, China;
2. Department of Chemistry, Zunyi Normal College, Zunyi 563002, Guizhou, China; 3. State Key Laboratory for
Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China

Received:2008-03-03 Revised:1900-01-01 Online:2009-01-24 Published:2010-04-15

摘要/Abstract

摘要：

摘要：利用失重法、电化学阻抗测试技术等方法,研究了X70钢在土壤中的宏电池腐蚀行为。试验结果表明,宏电池粘土中

阳极的腐蚀速率为自然腐蚀速率的307倍。在宏电池阴阳极面积比15∶1情况下,粘土中宏电池阳极的腐蚀速率为阴阳极面积比1∶1时的210倍。随着实验时间的增加,粘土中X70钢自然腐蚀速率逐渐减

小,而宏电池阳极的腐蚀速率一直保持着相当高的腐蚀速率。

关键词: 土壤腐蚀, 电化学阻抗, X70钢, 宏电池腐蚀

Abstract:

Macrocell corrosion of X70 steel in soils was studied by using weight loss and electrochemical impedance spectroscopy (EIS). It was found that the corrosion rate of anode in

clay was 307 times of that in natural condition. When the area ratio of cathode to anode was 15:1, the corrosion rate of the anode in clay was 210 times of that in condition

of the area ratio of cathode to anode being 1∶1. During the test, the corrosion rate of X70 steel in clay, which was buried, was slow, but the anode of the macrocell kept a

rapid corrosion rate.

Key words: X70 steel, macrocell corrosion, soil corrosion, EIS

中图分类号:

TG1724

伍远辉1,2,刘天模1,罗宿星2, 孙成3 . 土壤中宏电池对X70钢腐蚀作用的研究[J]. J4, 2009, 44(1): 24-27 .

WU Yuanhui1,2, LIU Tianmo1, LUO Suxing2, SUN Cheng3.

[J]. J4, 2009, 44(1): 24-27 .

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