盐酸介质中3,5-二（2-噻吩基）-1,2,4-三唑(2-TAT)对紫铜的缓蚀作用

腐蚀科学与防护技术, 2009, 21(4): 406-409.

盐酸介质中3,5-二（2-噻吩基）-1,2,4-三唑(2-TAT)对紫铜的缓蚀作用

陈云唐永明杨文忠刘英王锦堂

南京工业大学理学院

College of Science

Nanjing University of Technology

Nanjing 210009

关键词：缓蚀剂 , copper , polarization curves , electrochemical impedance

INHIBITION OF 3,5-BIS(2-THIENYL)-4-AMINO-1,2,4-TRIAZOLE ON COPPER IN HCl MEDIA

CHEN Yun

Keywords： inhibitor , 紫铜 , 极化曲线 , 交流阻抗

采用动电位极化曲线和电化学阻抗谱技术研究了3,5-二（2-噻吩基）-1,2,4-三唑(2-TAT)在1mol/L HCl介质中对紫铜的缓蚀作用.结果表明,2-TAT为阴极型缓蚀剂,阻抗参数的变化表明2-TAT吸附在紫铜表面,形成保护膜,其吸附方式遵循Langmuir吸附等温式.

The effect of 3,5-bis(2-thienyl)-4-amino-1,2,4-triazole(2-TAT)on corrosion inhibition of copper was studied in 1 molL-1 HCl by polarization curves and electrochemical impedance spectroscopy.The electrochemical study reveals that the compound is a cathodic-type inhibitor.Changes in impedance parameters are the indication of adsorption of 2-TAT on the copper surface,leading to the formation of a protective film.The adsorption of 2-TAT obeys the Langmuir adsorption isotherm.

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