Adsorption and thermodynamic characteristics of plumeria rubra plant extracts on mild steel corrosion in industrial water medium

Pradeep Kumar, C. B. and Mohana, K. N. (2013) Adsorption and thermodynamic characteristics of plumeria rubra plant extracts on mild steel corrosion in industrial water medium. International Research Journal of Pure and Applied Chemistry, 3 (4). pp. 330-346.

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Official URL: https://doi.org/10.9734/IRJPAC/2013/5397

Abstract

The inhibition effect of Plumeria rubra (PR) extracts on the corrosion of mild steel in industrial water medium was studied by mass loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The results show that the protection efficiency increased with increase in inhibitor concentration and decreased with temperature. Electrochemical impedance spectroscopic measurements indicated that charge transfer resistance increases with increasing inhibitor concentration. The adsorption of PR extracts on mild steel surface obeys Langmuir isotherm model. Potentiodynamic polarization studies revealed that PR extracts act as a mixed-type inhibitor. Scanning electron microscopy (SEM) was used to analyze the surface adsorbed film.

Item Type: Article
Uncontrolled Keywords: Mild Steel and Industrial Water and Plumeria Rubra and Polarization and EIS
Subjects: C Chemical Science > Chemistry
Divisions: Department of > Chemistry
Depositing User: Arshiya Kousar
Date Deposited: 20 Dec 2019 09:53
Last Modified: 20 Dec 2019 11:22
URI: http://eprints.uni-mysore.ac.in/id/eprint/10293

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