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电化学(中英文) ›› 2008, Vol. 14 ›› Issue (2): 200-204.  doi: 10.61558/2993-074X.1891

• 研究论文 • 上一篇    下一篇

氨基酸缓蚀剂在盐酸溶液中对钢的缓蚀作用

程明焱;吴伟明;刘鹤鸣;杜海燕;   

  1. 江西理工大学材料与化学工程学院,江西理工大学材料与化学工程学院,江西理工大学材料与化学工程学院,江西理工大学材料与化学工程学院 江西赣州341000,江西赣州341000,北京科技大学材料科学与工程学院,北京100083,江西赣州341000,江西赣州341000
  • 收稿日期:2008-05-28 修回日期:2008-05-28 出版日期:2008-05-28 发布日期:2008-05-28

Inhibition of Amino Acids Against Steel in Hydrochloric Acid Solution

CHENG Ming-yan1,WU Wei-ming1,2,LIU He-ming1,DU Hai-yan1   

  1. (1.Jiangxi University of Science and Technology,School of Materials and Chemical Engineering,Ganzhou 341000,China;2.School of Materials Science and Engineering,University of Science andTechnology Beijing,Beijing 100083,China
  • Received:2008-05-28 Revised:2008-05-28 Published:2008-05-28 Online:2008-05-28

摘要: 应用极化曲线、电化学阻抗谱等测试技术,研究了以谷氨酸作缓蚀剂在10%盐酸介质中对X65钢的缓蚀作用,测试腐蚀参数包括腐蚀电位(Ecorr)、极化电阻(Rp)、缓蚀效率(η)等.研究表明:该缓蚀剂是一种抑制阴极为主的混合型缓蚀剂,在较低的浓度具有良好缓蚀效果;缓蚀效率随着浓度的增加而提高,并在0.3g.L-1时达到最大值(90%以上).

关键词: 缓蚀剂, 谷氨酸, 盐酸, 电化学阻抗谱

Abstract: The inhibition effect of glutamic acid towards the corrosion of X65 steel in hydrochloric acid solution(10%) was investigated using polarization techniques、electrochemical impedance spectroscopy(EIS) and SEM.The corrosion rate,corrosion potential(Ecoor),polarization resistance(Rp) and inhibition efficiency(η) were determined.The results revealed that the inhibitor is a mixed type inhibitor.It has promising corrosion inhibition efficiency at low concentrations.The inhibition efficiency(η) increased with increasing the concentration.The maximum inhibition efficiency appeared at 0.3 g·L-1.

Key words: corrosion inhibitor, glutamic acid, hydrochloric acid, EIS

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