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Microstructure and corrosion resistance of Ni/Cr3C2-NiCr composite coating

Microstructure and corrosion resistance of Ni/Cr3C2-NiCr composite coating In this study, electrochemical deposition method which have cheaper equipment than thermal spraying methods and is available for the production of composite coatings were used.Design/methodology/approachComposite coatings were electrodeposited from a Watts's bath solution in which the suspended Cr3C2-NiCr particles were dispersed in the bath solution during deposition. Potentiodynamic polarization and electrochemical impedance spectroscopy techniques have been used to evaluate the corrosion resistance of the composite coating in the 3.5 Wt.% NaCl solution.FindingsIt was found that the submicron Cr3C2-NiCr particles distributed uniformly in the coating and depend on the current density of deposition, different amount of particles can be incorporated in the coating. The results showed that the corrosion resistance of the Ni/ Cr3C2-NiCr composite coatings is more comparable to the pure nickel coating.Originality/valueProduction of Ni-base composite coating from an electrolytic bath containing Cr3C2-NiCr particles is possible via electrodeposition. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Anti-Corrosion Methods and Materials Emerald Publishing

Microstructure and corrosion resistance of Ni/Cr3C2-NiCr composite coating

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References (48)

Publisher
Emerald Publishing
Copyright
© Emerald Publishing Limited
ISSN
0003-5599
DOI
10.1108/acmm-02-2019-2079
Publisher site
See Article on Publisher Site

Abstract

In this study, electrochemical deposition method which have cheaper equipment than thermal spraying methods and is available for the production of composite coatings were used.Design/methodology/approachComposite coatings were electrodeposited from a Watts's bath solution in which the suspended Cr3C2-NiCr particles were dispersed in the bath solution during deposition. Potentiodynamic polarization and electrochemical impedance spectroscopy techniques have been used to evaluate the corrosion resistance of the composite coating in the 3.5 Wt.% NaCl solution.FindingsIt was found that the submicron Cr3C2-NiCr particles distributed uniformly in the coating and depend on the current density of deposition, different amount of particles can be incorporated in the coating. The results showed that the corrosion resistance of the Ni/ Cr3C2-NiCr composite coatings is more comparable to the pure nickel coating.Originality/valueProduction of Ni-base composite coating from an electrolytic bath containing Cr3C2-NiCr particles is possible via electrodeposition.

Journal

Anti-Corrosion Methods and MaterialsEmerald Publishing

Published: Aug 9, 2019

Keywords: Corrosion resistance; Composite coating; Cr3C2-NiCr; Potantiodynamic polarization; Electrochemical impedance spectroscopy (EIS)

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