Electrochemical, gravimetric and quantum chemical analysis of mild steel corrosion inhibition by colchicine in 1 M HCl medium

Pavithra, MK and Venkatesha, TV and Kumar, Punith MK and Anantha, NS (2016) Electrochemical, gravimetric and quantum chemical analysis of mild steel corrosion inhibition by colchicine in 1 M HCl medium. In: RESEARCH ON CHEMICAL INTERMEDIATES, 42 (3). pp. 2409-2428.

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Abstract

The inhibition effect of colchicine (CC) on mild steel (MS) corrosion in 1 M HCl solution has been investigated by electrochemical techniques such as electrochemical impedance spectroscopy, potentiodynamic polarization, chronoamperometry and also by the gravimetric method. Polarization studies showed that CC acts as mixed type corrosion inhibitor. The inhibitor adsorption process in the MS/CC/HCl system was studied at different temperatures (303-333 K). The adsorption of CC on MS surface is an exothermic process and obeys the Langmuir adsorption isotherm. Based on potential of zero charge values and quantum chemical parameters, the mechanism of adsorption has been proposed.

Item Type:	Journal Article
Publication:	RESEARCH ON CHEMICAL INTERMEDIATES
Publisher:	SPRINGER
Additional Information:	Copy right for this article belongs to the SPRINGER, VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
Keywords:	Acid solutions; Corrosion inhibitor; Mild steel; Potentiodynamic polarisation; Electrochemical impedance spectroscopy; Weight loss
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	12 Apr 2016 06:08
Last Modified:	12 Apr 2016 06:08
URI:	http://eprints.iisc.ac.in/id/eprint/53649

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