Inhibition of corrosion of 15 Vol. % 6061 Al Alloy/SiCp composite using MMATT in 0.5 M Hydrochloric acid medium

Kini, Achutha U and Shetty, Prakash and Shetty, Divakara S and Isloor, Arun M and Herle, Ramadev (2011) Inhibition of corrosion of 15 Vol. % 6061 Al Alloy/SiCp composite using MMATT in 0.5 M Hydrochloric acid medium. In: National Conference on Advances in Mechanical Engineering 2011, 03 – 05 January, 2011, Jan 3-5, Manipal.

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Abstract

Aluminium Metal Matrix Composites reinforced with silicon carbide have prominent properties like light weight, low coefficient of thermal expansion, high thermal conductivity, high stiffness and strength and better wear resistance, which make them useful in several industries. Corrosion is a major problem in the use of Aluminium Metal Matrix Composites reinforced with silicon carbide. It will be still severe when the composite comes in contact with acid medium. Inhibition is one of the mechanisms used for mitigating the metallic corrosion especially in aqueous environment. A large number of organic heterocyclic compounds containing nitrogen, sulphur and oxygen have been used as corrosion inhibitors.In the present work an attempt has been made to study the inhibition effect of 5-[(2- methylphenoxy)methyl]-4-{[(1E)-(3-phenyl-1Hpyrazol-4-yl)methylene]amino}-4,5-dihydro-1H-1,2,4-triazole-3-thiol (MMATT) on the corrosion behavior of 15 vol.% 6061 Al alloy/ SiCp composite in 0.5 M hydrochloric acid medium using potentio-static polarization techniques and weight loss method. The study reveals that the inhibition efficiency (IE) of the compound increases with increase in concentration of the inhibitor up to a critical concentration. The results obtained indicate that MMATT is an excellent cathodic inhibitor. The adsorption of the compound on the 6061 Al alloy/SiCp composite surface is found to obey Temkins′ adsorption isotherm and inhibition is governed by physisorption mechanism.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: 15 vol. % 6061 Al alloy/SiCp composite; Cathodic inhibitor; Corrosion; adsorption; Physisorption mechanism
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: Dr. Rekha D. Pai
Date Deposited: 21 Feb 2013 06:07
Last Modified: 21 Feb 2013 06:07
URI: http://eprints.manipal.edu/id/eprint/78640

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