Electrochemical studies on Zn/nano-CeO 2 electrodeposited composite coatings

Ranganatha, S and Venkatesha, TV and Vathsala, K and kumar , MKP (2012) Electrochemical studies on Zn/nano-CeO 2 electrodeposited composite coatings. In: Surface and Coatings Technology, 208 . pp. 64-72.

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Abstract

The Zn-CeO 2 composite coatings through electrodeposition technique were successfully fabricated on mild steel substrate. As a comparison pure zinc coating was also prepared. The concentration of CeO 2 nanoparticles was varied in the electrolytic bath and the composites were electrodeposited both in the presence and absence of cetyltriammonium bromide (CTAB). The performance of the CeO 2 nanoparticles towards the deposition, crystal structure, texture, surface morphology and electrochemical corrosion behavior was studied. For characterizations of the electrodeposits, the techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM) were used. Both the additives ceria and surfactant polarize the reduction processes and thus influence the deposition process, surface nature and the electrochemical properties. The electrochemical experiments like potentiodynamic polarization and electrochemical impedance spectroscopic (EIS) studies carried out in 3.5 wt. NaCl solution explicit higher corrosion resistance by CeO 2 incorporated coating in the presence of surfactant. © 2012 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	Surface and Coatings Technology
Additional Information:	cited By (since 1996) 0; Article in Press
Keywords:	Electrodeposition;Composite coating;Zeta potential;Zn–CeO2; Surface morphology;Corrosion
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	17 Sep 2012 11:02
Last Modified:	17 Sep 2012 11:02
URI:	http://eprints.iisc.ac.in/id/eprint/45034

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