Table of Contents
International Journal of Metals
Volume 2016 (2016), Article ID 8579429, 9 pages
Research Article

An Ecofriendly Initiative for the Corrosion Inhibition of Mild Steel in 1 M HCl Using Tecoma capensis Flower Extract

Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, Tamil Nadu 641043, India

Received 31 March 2016; Accepted 19 September 2016

Academic Editor: Bingzhe Bai

Copyright © 2016 A. Prithiba and R. Rajalakshmi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Corrosion inhibition of mild steel in 1 M HCl in the presence of Tecoma capensis flower extract was carried out by means of mass loss, potentiodynamic polarisation, and electrochemical impedance techniques. The inhibition efficiency varied with concentration of the inhibitor, immersion time, and temperature. The adsorption of the inhibitor on mild steel surface obeys Langmuir’s adsorption isotherm. Thermodynamic parameters reveal that the adsorption process is spontaneous. Electrochemical studies reflect that the inhibitor acts as a mixed-type inhibitor. Surface analytical techniques ascertain the inhibitive nature of the studied inhibitor.