Experimental Investigation of Isatin Schiff base as Corrosion Inhibitor for Carbon Steel in 1MHCl

Authors(5) :-Anjoo Bala, Vikas, Gobind Goyat, Suresh Kumar, Hari Om

The inhibition efficiency of Isatin(1-H-indol-2,3-dione) 2-aminothiophenol (H2IATP) Schiff base as a corrosion inhibitor for carbon steel in 1M HCl solution was investigated by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. Weight loss measurements were done by taking different immersion time for various concentrations (50-300ppm) of inhibitor at temperature of 298K. The observed results showed increase in inhibition efficiency (IE %), surface coverage (?) but decrease in corrosion rate (CR) with increase in the concentrations of the inhibitor. Inhibitor found to exhibit maximum inhibition efficiency of 97.35% at an optimum concentration of 250ppm for 24hrs of immersion time. Langmuir adsorption isotherm was obeyed by the inhibitor. Thermodynamic parameters regulating the adsorption process were calculated and adsorption depicted to be physical in nature. Polarization measurements data confirms the inhibitor as mixed type in nature. EIS data revealed the dependence of corrosion process on charge transfer process.

Authors and Affiliations

Anjoo Bala
Department of Chemistry, M. D. University, Rohtak, Haryana, India
Vikas
Department of Chemistry, M. D. University, Rohtak, Haryana, India
Gobind Goyat
Department of Chemistry, M. D. University, Rohtak, Haryana, India
Suresh Kumar
Department of Chemistry, M. D. University, Rohtak, Haryana, India
Hari Om
Department of Chemistry, M. D. University, Rohtak, Haryana, India

Carbon Steel, HCl, Corrosion Inhibitor, Electrochemical Impedance, Adsorption Isotherm.

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Publication Details

Published in : Volume 4 | Issue 1 | January-February 2018
Date of Publication : 2018-02-28
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 744-754
Manuscript Number : IJSRSET1841204
Publisher : Technoscience Academy

Print ISSN : 2395-1990, Online ISSN : 2394-4099

Cite This Article :

Anjoo Bala, Vikas, Gobind Goyat, Suresh Kumar, Hari Om, " Experimental Investigation of Isatin Schiff base as Corrosion Inhibitor for Carbon Steel in 1MHCl, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 4, Issue 1, pp.744-754, January-February-2018.
Journal URL : http://ijsrset.com/IJSRSET1841204

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