Quraishi, M.A. and Khan, M.A.W. and Ajmal, M. and Muralidharan, S. and Iyer, S.V. (1997) Influence of heterocyclics anils on corrosion inhibition and hydrogen permeation through mild steel in acid chloride environments. Corrosion, 53 (06). pp. 475-480.

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Abstract

The heterocyclic anils 2-salicylideneaminobenzothiazole (SABT), 2-salicylideneamino-6-chlorobenzothiazole (SACLBT), and 2-salicylideneamino-6-methoxybenzothiazole (SAMEOBT) were investigated to evaluate their efficiency as corrosion inhibitors for mild steel (MS) in 1 M hydrochloric acid (HCl) at concentrations from 100 ppm to 500 ppm and temperatures from 35 deg.C to 60 deg.C. SACLBT performed best, giving an inhibition efficiency as high as 98% even at a very low concentration and higher temperature. Potentiodynamic polarization studies showed inhibition was under cathodic control. These compounds reduced hydrogen permeation through MS in 1 M HCl solution. Adsorption on these surface followed Temkin's adsorption isotherms. Surface analysis of the MS surface exposed with SACLBT proved adsorption of this compound on the surface occured through interaction of ione pairs of nitrogen, sulfur, and chlorine atoms with the metal surface

Item Type:	Article
Uncontrolled Keywords:	Acid environments; Anils; Auger electron spectroscopy; Chloride; Hydrochloric acid; Hydrogen permeation; Inhibition efficiency; Mild steel; Potentiodynamic polarization testing; Temkin's adsorption isotherm; Temperature
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	20 Jul 2012 11:47
Last Modified:	20 Jul 2012 11:47
URI:	http://cecri.csircentral.net/id/eprint/2854

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