Electrodeposition and Corrosion Properties of Nickel-Graphene Oxide Composite Coatings.

Vitaly Tseluikin,Anton Mostovoy,Svetlana Zakirova,Asel Dzhumieva,Anastasia Strilets,Andrey Yakovlev,Marina Lopukhova

doi:10.3390/ma14195624

Vitaly Tseluikin, Anton Mostovoy + Show 5 more

Open Access

https://doi.org/10.3390/ma14195624

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Journal: Materials	Publication Date: Sep 27, 2021
Citations: 3	License type: CC BY 4.0

Affiliation: Yuri Gagarin State Technical University of Saratov

Abstract

Nickel-based composite electrochemical coatings (CEC) modified with multilayer graphene oxide (GO) were obtained from a sulfate-chloride electrolyte in the reverse electrolysis mode. The microstructure of these CECs was investigated by X-ray phase analysis and scanning electron microscopy. The corrosion-electrochemical behavior of nickel–GO composite coatings in a 0.5 M solution of H2SO4was studied. Tests in a 3.5% NaCl solution showed that the inclusion of GO particles into the composition of electrolytic nickel deposits makes their corrosion rate 1.40–1.50 times less.

Highlights

Composite electrochemical coatings (CECs) are obtained by the co-deposition of metals with various dispersed particles from electrolyte suspensions [1,2,3]
During the deposition of the nickel–graphene oxide (GO) CEC, a shift of potentials towards more electronegative values is observed as Materials 2021, 14, 5624 compared to nickel without a dispersed phase
Based on the conducted studies, we can draw the conclusion that the addition of a dispersion of multilayer graphene oxide into the sulfate-chloride nickel-plating electrolyte results in the formation of CECs

Summary

Introduction

Composite electrochemical coatings (CECs) are obtained by the co-deposition of metals with various dispersed particles from electrolyte suspensions [1,2,3]. Among CECs, coatings based on nickel [4,5,6,7,8,9,10,11] and its alloys [12,13,14,15,16,17,18,19] have become widespread, which is due to the ability of nickel to form electrolytic deposits with dispersed particles of a different nature which have good adhesion to the metal substrate. Nickel-based composite coatings are characterized by hardness and resistance in various corrosive environments. They are used for machine parts and mechanisms operating in hard, as well as especially severe conditions [1,2]

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