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. doi: 10.3969/j.issn.1002-6495.2009.04.015

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 ^1, , 唐永明 ^2, , 杨文忠 ^3, , 刘瑛 ^4, , 王锦堂 ^5,

1.南京工业大学,理学院,南京,210009

2.南京工业大学,理学院,南京,210009

3.南京工业大学,理学院,南京,210009

4.南京工业大学,理学院,南京,210009

5.南京工业大学,理学院,南京,210009

关键词：缓蚀剂 , 紫铜 , 极化曲线 , 交流阻抗

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

Keywords： inhibitor , copper , polarization curves , electrochemical impedance

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/LHCl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 HC1 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.

参考文献

[1]	Bentiss F,Lagrenee M,Traisnel M,et al.The corrosion inhibition of mild steel in acidic media by a new triazole derivative[J].Corrosion Science,1999,41 (4):789.
[2]	Gueldart J F,Lions F.The organic chemistry of a new weak field tfidentate chelating agent.3,5-Di (2-pyridyl) -1,2,4-triamle[J].J.Org.Chem.,1965,30:318.
[3]	曹楚南,张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002.82.
[4]	Hsu C H,Mansfeld F.Technical note:concerning the conversion of the constant phase element parameter Y0 into a capacitance[J].Corrosion,2001,57 (9):747.

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