J. A. Selvi, M. Arthanareeswari, P. Kamaraj, T. Malini, V. Elumalai, S. Revathi, N. Subasree
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引用次数: 0
Abstract
The inhibitory activity of ethanol extract of Nerium oleander leaf (NOLE) on carbon steel corrosion in 0.5 M and 1.0 M of hydrochloric acid solutions was studied by weight loss method and electrochemical techniques. The inh ibition efficiency (ηw) increased with an increase in the concentration of NOLE and i n temperature. Polarisation curves indicated that NOLE acts as a mixed type of inhibit or. The changes in charge transfer resistance (Rt) with increasing inhibitor (i.e. NOLE) concentrati on assured the adsorption of the inhibitor onto the metal surface. The results of ηw, ηp (inhibition efficiency obtained from polarisation study) and ηR (inhibition efficiency obtained from impedance analysis) are in par with each other. Sur face morphology study uncovered the coating of the inhibitor molecule on the metal surface. The phenomenon of physical adsorption has been established based on the inhibi t on efficiency of the inhibitor with change in temperature.
期刊介绍：
Portugaliae Electrochimica Acta is a bi-monthly Journal published by the Portuguese Electrochemical Society since 1983. Portugaliae Electrochimica Acta publishes original papers, brief communications, reviews and letters concerned with every aspect of theory and practice of electrochemistry, as well as articles in which topics on history, science policy, education, etc. in the electrochemical field (teaching or research) may be discussed.
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