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Anti-corrosion Properties of Rosemary Oil and Vanillin on Low Carbon Steel in Dilute Acid Solutions

Loto, R. T. and Loto, C. A. and Ayozie, Bryan and Sanni, T.F. (2018) Anti-corrosion Properties of Rosemary Oil and Vanillin on Low Carbon Steel in Dilute Acid Solutions. In: 147th Annual Meeting & Exhibition.

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Abstract

The corrosion inhibition effect of rosemary oil and vanillin (ROV) on low carbon steel in 1 M HCl and H2SO4 media was studied through potentiodynamic polarization, weight loss analysis, optical microscopy and IR spectroscopy. Results showed optimal inhibition performance of the compound, but more effectively in HCl solution at 92.57 and 94% compared to 64.57 and 64.55% in H2SO4 from both electrochemical test. Identified functional groups of the admixture from IR spectroscopy completely adsorbed on the steel in HCl, but partially in H2SO4. Thermodynamic calculations showed chemisorption and physiochemical adsorption according to Langmuir, Freundlich and Temkin isotherm model. Micro-analytical images revealed a well-protected ROV inhibited steel surface in comparison to images from the corroded stainless steel. The inhibition behavior of ROV was determined to be mixed type

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Corrosion ⋅ Inhibitor ⋅ Rosemary oil ⋅ Vanillin Acid
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 Hannah Akinwumi
Date Deposited: 22 Mar 2018 14:27
Last Modified: 22 Mar 2018 14:27
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/10468

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