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研究论文

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
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  • 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

  网络出版日期: 2004-11-28

The Inhibition Synergistic Effect Between Imidazoline Derivative and Thiourea

  • ZHAO Jing-mao ,
  • LIU He-xia ,
  • DI Wei ,
  • ZUO Yu~
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  • (College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received date: 2004-11-28

  Revised date: 2004-11-28

  Online published: 2004-11-28

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.

本文引用格式

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, 2004 , 10(4) : 440 -445 . DOI: 10.61558/2993-074X.1599

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.

参考文献

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