Corrosion inhibition behaviour of N-Naphthyl-N'-Phenyl Thiourea on 6061 Al Alloy/SiCp composite in hydrochloric acid medium

Kini, Achutha U and Shetty, Prakash and Shetty, Divakara S and Isloor, Arun M and Herle, Ramadev (2010) Corrosion inhibition behaviour of N-Naphthyl-N'-Phenyl Thiourea on 6061 Al Alloy/SiCp composite in hydrochloric acid medium. International Journal of Contemporary Science, Engineering and Technology, 1 (1-2). pp. 1-3.

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Abstract

Aluminium matrix composites reinforced with silicon carbide have prominent properties which make them useful in several industries. Inhibition is one of the mechanisms used for mitigating the metallic corrosion especially ill acid environment. A large number of organic heterocyclic compounds containing nitrogen, sulfur and oXlJgen have been used as corrosion inhibitors. Most of the organic compounds act as inhibitors by way of adsorption on the surface of the metal/alloy and illhibiting the anodic dissolution by the effect of blocking the active sites on the metal/alloy surface. In the present work an attempt has been made to study the inhibition effect of N - nephthyl-N' - phenyl thiourea (NPTU) on the corrosion behaviour of 6061 AI all(lYSiCp composite in 0.5 N hydrochloric acid medium IIsing potentio-static polarization technique. The study reveals that the inhibition efficiency (IE) of NPTU increases with increase in concentration of the inhibitor lipto a critical concentration. The results obtained indicates that NPTU is an excellent cathodic inhibitor. The adsorption of the compound on the 6061 AI alloy/SiCp composite surface is [ound to obey Temkeins' and LAngmuir adsorption isotherms and inhibition is governed by physisorption mechanism.

Item Type: Article
Uncontrolled Keywords: 6061 Al alloy/SiCp composite, Cathodic inhibitor, Corrosion, Temkeins' adsorption, Physisorptioll.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Engineering > MIT Manipal > Printing and Media
Depositing User: Dr. Rekha D. Pai
Date Deposited: 20 Feb 2013 09:53
Last Modified: 20 Feb 2013 09:53
URI: http://eprints.manipal.edu/id/eprint/78624

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