咪唑啉衍生物与硫脲之间的缓蚀协同效应研究

电化学（中英文） ›› 2004, Vol. 10 ›› Issue (4): 440-445.

咪唑啉衍生物与硫脲之间的缓蚀协同效应研究

赵景茂,刘鹤霞,狄伟,左禹

北京化工大学材料科学与工程学院,北京化工大学材料科学与工程学院,北京化工大学材料科学与工程学院,北京化工大学材料科学与工程学院北京100029 ,北京100029 ,北京100029 ,北京100029

收稿日期:2004-11-28 修回日期:2004-11-28 出版日期:2004-11-28 发布日期:2004-11-28

The Inhibition Synergistic Effect Between Imidazoline Derivative and Thiourea

ZHAO Jing-mao, LIU He-xia, DI Wei,ZUO Yu~*

(College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received:2004-11-28 Revised:2004-11-28 Published:2004-11-28 Online:2004-11-28

摘要/Abstract

摘要： 　应用失重法、动电位扫描法、X射线光电子能谱(XPS)研究了咪唑啉缓蚀剂和硫脲复配后对碳钢在CO2盐水溶液中的缓蚀协同作用.实验表明,咪唑啉和硫脲之间存在着良好的协同效应,二者复合后对CO2腐蚀有较好的抑制作用.经XPS检测,试样表面吸附膜有N、S元素存在,而且,于接近基体处,S元素含量相对较高;而在溶液界面处,则N元素含量较高.据此推断缓蚀剂和硫脲在钢样表面可能形成"包含络合物",从而使缓蚀剂膜更加致密,缓蚀效果也更好.

关键词: 缓蚀剂, 协同效应, 咪唑啉衍生物, 硫脲, CO2腐蚀

Abstract: The inhibition synergistic effect between imidazoline and thiourea for carbon steel in CO_2 saturated brine solution was investigated by using weight-loss method, polarization curves measureament and XPS. The results showd that the inhibition efficiency increased significantly when imidazoline derivative was added as a corrosion inhibitor in the solution together with thiourea. The N and S atoms in the inhibitor film adsorbed on the surface of carbon steel, and N atoms predominated in the film near the solution and decreased gradually with the film depth and finally S atoms were the major element in the film near the matrix. It was concluded that imidazoline and thiourea could form a cage complex which adsorbed on the surface of steel and provided a compact film and a better inhibition.

Key words: Corrosion inhibitor, Synergistic effect, Imidazoline derivative, Thiourea, Sour corrosion

中图分类号:

TG174

赵景茂,刘鹤霞,狄伟,左禹. 咪唑啉衍生物与硫脲之间的缓蚀协同效应研究[J]. 电化学（中英文）, 2004, 10(4): 440-445.

ZHAO Jing-mao, LIU He-xia, DI Wei,ZUO Yu~*. The Inhibition Synergistic Effect Between Imidazoline Derivative and Thiourea[J]. Journal of Electrochemistry, 2004, 10(4): 440-445.

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链接本文: https://electrochem.xmu.edu.cn/CN/

https://electrochem.xmu.edu.cn/CN/Y2004/V10/I4/440

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