Electrogalvanization using Zn-graphene oxide composite coatings with enhanced corrosion resistance performance

Rekha, MY and Srivastava, C (2021) Electrogalvanization using Zn-graphene oxide composite coatings with enhanced corrosion resistance performance. In: Journal of Coatings Technology and Research .

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Abstract

Zn-based coatings are extensively used for the protection of steel structures. Efforts toward further enhancement in the corrosion resistance performance of Zn coatings are therefore an area of continued interest. In this work, Zn-graphene oxide (Zn-GO) composite coatings containing different volume fractions of GO were electrodeposited on mild steel substrates using an electrolyte bath with different concentrations of dispersed graphene oxide. The electrodeposition parameters used yielded compact and crack-free morphology for all the coatings. Incorporation of GO led to a refinement of the Zn crystallites in the coating matrix. Potentiodynamic polarization measurements clearly showed that all the Zn-GO composite coatings exhibited higher corrosion resistance performance when compared to the pristine Zn coatings, and further, the corrosion rate decreased with the increase in the volume fraction of the GO in the composite coatings. © 2021, American Coatings Association.

Item Type:	Journal Article
Publication:	Journal of Coatings Technology and Research
Publisher:	Springer
Additional Information:	The copyright of this article belongs to Springer
Keywords:	Corrosion rate; Corrosion resistance; Corrosion resistant coatings; Crystallites; Electrodeposition; Electrodes; Electrolytes; Graphene; Volume fraction, Crack free; Electrogalvanization; Electrolyte bath; Mild steel substrates; Potentiodynamic polarization measurements, Composite coatings
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	22 Feb 2021 10:25
Last Modified:	22 Feb 2021 10:25
URI:	http://eprints.iisc.ac.in/id/eprint/67953

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