Inhibition of Corrosion of 15 Vol.%6061 Al Alloy/Sicp Composite using Ethyl-2-Phenyl Hydrozono-3-Oxobutyrate in 0.1 N Hydrochloric Acid Medium

Kini, Achutha U and Shetty, Prakash and Shetty, Divakara S and Isloor, Arun M (2009) Inhibition of Corrosion of 15 Vol.%6061 Al Alloy/Sicp Composite using Ethyl-2-Phenyl Hydrozono-3-Oxobutyrate in 0.1 N Hydrochloric Acid Medium. In: Recent Trends in Advanced Materials RTAM-2009, KVGCE, Sullia D.K.

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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, which will be still severe in acid medium. Inhibition is one of the mechanisms used for mitigating the metallic corrosion especially in acid 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 Ethyl-2-Phenyl hydrozono-3-oxobutyrate on the corrosion behaviour of 15 vol.% 6061 Al alloy SiCp composite in 0.1 N hydrochloric acid medium using potentio-static polarization technique. 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 Oxobutyrate is an excellent cathodic inhibitor. The adsorption of the compound on the 6061 Al alloy/Si Cp 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
Engineering > MIT Manipal > Printing and Media
Depositing User: MIT Library
Date Deposited: 15 Mar 2013 09:26
Last Modified: 15 Mar 2013 09:26
URI: http://eprints.manipal.edu/id/eprint/79082

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