Inhibition behaviour of some isonicotinic acid hydrazides on the corrosion of mild steel in hydrochloric acid solution

Chakravarthy, M. P. and Mohana, K. N. (2013) Inhibition behaviour of some isonicotinic acid hydrazides on the corrosion of mild steel in hydrochloric acid solution. International Journal of Corrosion, 2013. ISSN 1687-9325

Text (Full Text) Che_2013_Mohana_02.pdf - Published Version Download (4MB)

Abstract

New corrosion inhibitors, namely, isonicotinic acid (1H-indol-3-yl- methylene)hydrazide (INIMH) and isonicotinic acid (1H-pyrrol-2-yl-methylene) hydrazide (INPMH), have been synthesized, and their inhibitive characteristics for the corrosion of mild steel in 0.5 M HCl were investigated by mass loss and electrochemical techniques. The structures of the synthesized compounds were confirmed using spectral studies. Potentiodynamic polarization studies revealed that the investigated inhibitors are of mixed type. Various thermodynamic parameters were evaluated. Langmuir adsorption isotherm was found to be the best description for both inhibitors. FTIR spectra, energy dispersive X-ray spectroscopy (EDX), and scanning electron microscopy (SEM) were performed to characterize the passive film on the metal surface.

Item Type:	Article
Uncontrolled Keywords:	Spectral studies, Spectroscopic analysis, Fourier transform infrared spectroscopy, Scanning electron microscopy, Pyridine, Corrosion inhibitors, Electrochemical techniques, Hydrochloric acid solution, Potentiodynamic polarization studies, Corrosion, Carbon steel, Carboxylic acids, Energy dispersive X ray spectroscopy, Isonicotinic acid, Langmuir adsorption isotherms, Thermodynamic parameter, X ray spectroscopy
Subjects:	C Chemical Science > Chemistry
Divisions:	Department of > Chemistry
Depositing User:	Arshiya Kousar Library Assistant
Date Deposited:	03 Oct 2019 05:43
Last Modified:	03 Oct 2019 05:43
URI:	http://eprints.uni-mysore.ac.in/id/eprint/7929

Actions (login required)

View Item