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Vol. 27 No. 3 (2015): Vol 27 Issue 3

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Effects of Cyproconazole on Copper Corrosion as Environmentally Friendly Corrosion Inhibitor in Nitric Acid Solution

https://doi.org/10.14233/ajchem.2015.18346
Shouxu Wang
State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P.R. China
Zhihua Tao
State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P.R. China; Research and Development Department Guangdong Guanghua Sci-Tech Co., Ltd., Shantou 515000, P.R. China
Wei He
State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, P.R. China; Research and Development Department Guangdong Guanghua Sci-Tech Co., Ltd., Shantou 515000, P.R. China
Dingjuna Xiao
Research and Development Department Guangdong Guanghua Sci-Tech Co., Ltd., Shantou 515000, P.R. China
Ze Tan
Research and Development Department Guangdong Guanghua Sci-Tech Co., Ltd., Shantou 515000, P.R. China

Corresponding Author(s) : Zhihua Tao

tzh3595@uestc.edu.cn

Asian Journal of Chemistry, Vol. 27 No. 3 (2015): Vol 27 Issue 3

Abstract

The inhibiting influence of cyproconazole on the corrosion of copper in 0.5 M HNO3 solution was investigated by means of potentiodynamic polarization and electrochemical impedance spectroscopy. The selective desorption of cyproconazole from copper metal surface was also studied by the differential polarization curves. Phenomenon of chemisorption accompanied by physisorption was proposed from the values of thermodynamics parameters (DG0ads) obtained. Results obtained from the experimental data show that cyproconazole acts as an effective eco-friendly corrosion inhibitor for copper in nitric acid. The adsorption of cyproconazole on copper surface from 0.5 M HNO3 obeys the Langmuir adsorption isotherm.

Keywords

Corrosion inhibition Nitric acid Potentiodynamic polarization Electrochemical impedance spectroscopy Copper
Wang, S., Tao, Z., He, W., Xiao, D., & Tan, Z. (2015). Effects of Cyproconazole on Copper Corrosion as Environmentally Friendly Corrosion Inhibitor in Nitric Acid Solution. Asian Journal of Chemistry, 27(3), 1107–1110. https://doi.org/10.14233/ajchem.2015.18346
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