中华医学超声杂志

应用化学 ›› 1998, Vol. 0 ›› Issue (6): 21-24.

• 研究论文 • 上一篇    下一篇

咪唑啉酰胺在含CO2溶液中的缓蚀机理

张学元, 马利民, 杜元龙, 曹殿珍   

  1. 中国科学院金属腐蚀与防护研究所, 金属腐蚀与防护国家重点实验室 沈阳110015
  • 收稿日期:1998-06-25 修回日期:1998-09-28 出版日期:1998-12-10 发布日期:1998-12-10
  • 基金资助:
    金属腐蚀与防护国家重点实验室资助项目

Inhibition Mechanism of Imidazoline Amide in CO2 Solution

Zhang Xueyuan, Ma Limin, Du Yuanlong, Cao Dianzhen   

  1. State Key Laboratory for Corrosion and Protection, Institute of Corrosion and Protection of Metals, Chinese Academy of Sciences, Shenyang 110015
  • Received:1998-06-25 Revised:1998-09-28 Published:1998-12-10 Online:1998-12-10

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摘要： 用电化学阻抗谱及极化测量,研究了在含CO2的NaCl溶液中咪唑啉酰胺(IM)对铁的缓蚀性能研究,并探讨了它在铁表面的吸脱附行为。结果表明,IM的缓蚀作用是由它对铁的负催化所控制。它在铁表面的吸附服从Langmuir吸附等温式。电位正移到脱附电位以上是IM阳极脱附的主要原因,这时它使表面电容Cd显着增加,传递电阻Rt明显减小.

关键词: 咪唑啉酰胺, 缓蚀, 脱附, 铁, NaCl溶液

Abstract: The inhibition mechanism of imidazoline amide(IM) in CO2 solution has been studied by electrochemical techniques including electrochemical impedance spectrum and polarization result measurements. It is shown that the inhibition of IM is due to the negative catalytic effect on the iron. Its adsorption obeyed the Langmuir isotherm. The positive shift over to adsorption potential is the main reason of desorption of IM on the anode, which increases the interface capacity and decreases the transmission resistance.

Key words: imidazoline amide, inhibition, desorption, iron, NaCl solution

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