Effect of Echo as Corrosion Inhibitor for 15 vol.% 6061 Al Alloy/Sicp Composite in 1 M Hydrochloric Acid Medium

Kini, Achutha U and Shetty, Prakash and Shetty, Divakara S and Isloor, Arun M and Herle, Ramadev (2012) Effect of Echo as Corrosion Inhibitor for 15 vol.% 6061 Al Alloy/Sicp Composite in 1 M Hydrochloric Acid Medium. In: Adavnces in New Engineering Materials & Characterization AMC-2010, KVGCE, Sullia (D.K).

[img] PDF
KVGCE_Conference_Paper_-_Dec_2010.pdf - Published Version
Restricted to Registered users only

Download (454kB) | Request a copy

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 etc. Due to these properties they find application in Automobile, Electronic and Aeronautical industries. Pitting corrosion is a major problem in using Aluminium Metal Matrix Composites reinforced with silicon carbide. It will be still severe when the composite is used in places where it comes in contact with acids. Inhibition is one of the mechanisms used for reducing 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 Ethyl (2E)-2-[2-(4-chlorophenyl)hydrazinylidene]-3-oxobutanoate (ECHO) on the corrosion behaviour of 15 vol.% 6061 Al alloy SiCp composite in 1 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 ECHO acts as 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: Aluminium 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 10:59
Last Modified: 15 Mar 2013 10:59
URI: http://eprints.manipal.edu/id/eprint/79083

Actions (login required)

View Item View Item