Corrosion inhibition studies of the combined admixture of 1,3-diphenyl-2-thiourea and 4-hydroxy-3- methoxybenzaldehyde on mild steel in dilute acid media

Loto, R. T. (2016) Corrosion inhibition studies of the combined admixture of 1,3-diphenyl-2-thiourea and 4-hydroxy-3- methoxybenzaldehyde on mild steel in dilute acid media. UNIVERSIDADA NACIONAL DE COLOMBIA, 46 (1). pp. 20-32.

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Abstract

The electrochemical corrosion inhibition properties of the combined admixture of 4óHq diphenylqxqthiourea and áqhydroxyqHq methoxybenzaldehyde on mild steel in 4 M )xSOá and )õl acid media were studied through weight loss analysisó potentiodynamic polarization methodó optical microscopy and /R spectroscopyí Results showed that the organic mixture effectively inhibited the corrosion of mild steel in both solutions with an optimal inhibition efficiency of 7LíáR and 7LíáLR in )xSOá from weight loss and potentiodynamic polarization testó while the corresponding values in )õl were 7áíL4R and 97íLHR respectivelyí Thermodynamic calculations showed that the compound chemisorbed onto the steel surface blocking the diffusion of corrosive anionsí Observations from microqanalytical images confirmed the effective inhibition property of the compound and its presence on the surface topography of the steelí /nfrared spectra revealed the presence of the functional groups of the organic compound responsible for corrosion inhibitioní The adsorption of the compound was deduced to obey the Langmuiró úrumkin and úreundlich adsorption isothermí

Item Type:	Article
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	Mrs Patricia Nwokealisi
Date Deposited:	31 Dec 2017 12:19
Last Modified:	31 Dec 2017 12:19
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/9889

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