Microstructure and corrosion properties of zinc-graphene oxide composite coatings

Rekha, MY and Srivastava, Chandan (2019) Microstructure and corrosion properties of zinc-graphene oxide composite coatings. In: CORROSION SCIENCE, 152 . pp. 234-248.

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Abstract

Microstructure and corrosion properties of electrodeposited zinc-graphene oxide (Zn-GO) composite coatings and Zn-GO-Zn multilayer coating was investigated. Addition of GO enhanced the corrosion resistance of the composite coating. Microstructural characterization revealed that the enhancement in the corrosion resistance was due to GO induced significant reduction in Zn grains sizes which would facilitate formation of protective oxide layer. Microstructural characterization of exposed Zn-GO-Zn multilayer coatings revealed relatively lesser oxidation of Zn regions beneath the GO layer which further illustrated the role of impermeability of GO towards hindering the penetration of the electroactive media and thereby retarding the corrosion rate.

Item Type:	Journal Article
Publication:	CORROSION SCIENCE
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Additional Information:	copyright for this article belongs to Elsevier Ltd
Keywords:	Zinc coatings; Graphene oxide; Polarization; EIS; TEM; Impermeability
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	09 Jun 2020 06:07
Last Modified:	09 Jun 2020 06:07
URI:	http://eprints.iisc.ac.in/id/eprint/62871

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