Asian Journal of Research in Chemistry

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The Performance of VCI Coated Paper for Corrosion Prevention of Copper in HCl Environment


Affiliations
1 Department of Sciences, Amrita Vishwa Vidyapeetham, Coimbatore-641105, India
2 Corrosion Division, Central Electrochemical Research Institute, Karaikudi, India
3 Department of Chemistry, PSG College of Technology, Coimbatore-641004, India
     

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The performance of five essential oils has been used to study the corrosion prevention of copper by weight loss and electrochemical polarization methods. Results showed that the inhibition efficiency depends upon the concentration of inhibitors as well as that of acid. The essential oils reduce the corrosion of copper in HCl environment more effectively in 4% concentration. This is due to adsorption of inhibitor molecules on metal surface, which is proved by Tempkin adsorption isotherm. The electrochemical polarization result revealed that inhibitors are of mixed type in nature.

Keywords

Copper, Inhibition Efficiency, Adsorption.
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  • The Performance of VCI Coated Paper for Corrosion Prevention of Copper in HCl Environment

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Authors

N. Poongothai
Department of Sciences, Amrita Vishwa Vidyapeetham, Coimbatore-641105, India
T. Ramachanderen
Department of Sciences, Amrita Vishwa Vidyapeetham, Coimbatore-641105, India
M. Natesan
Corrosion Division, Central Electrochemical Research Institute, Karaikudi, India
S. C. Murugavel
Department of Chemistry, PSG College of Technology, Coimbatore-641004, India

Abstract


The performance of five essential oils has been used to study the corrosion prevention of copper by weight loss and electrochemical polarization methods. Results showed that the inhibition efficiency depends upon the concentration of inhibitors as well as that of acid. The essential oils reduce the corrosion of copper in HCl environment more effectively in 4% concentration. This is due to adsorption of inhibitor molecules on metal surface, which is proved by Tempkin adsorption isotherm. The electrochemical polarization result revealed that inhibitors are of mixed type in nature.

Keywords


Copper, Inhibition Efficiency, Adsorption.