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Journal of Electrochemical Science and Engineering, Vol. 15 No. 1, 2025.

Original scientific paper

https://doi.org/10.5599/jese.2522

Self-healing efficiency of ceria-doped Zn-Co coatings: Insights into particle-free versus biphasic plating baths

Marija Mitrović orcid id orcid.org/0000-0002-3208-016X ; University of East Sarajevo, Faculty of Technology Zvornik, Karakaj 34A 75400 Zvornik, Republic of Srpska, Bosnia and Herzegovina
Anđela Simović ; University of Belgrade, Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, Njegoševa 12, 11000 Belgrade, Serbia
Regina Fuchs-Godec ; University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova ulica 17, 2000 Maribor, Slovenia
Milorad Tomić ; University of East Sarajevo, Faculty of Technology Zvornik, Karakaj 34A 75400 Zvornik, Republic of Srpska, Bosnia and Herzegovina
Jelena Bajat orcid id orcid.org/0000-0003-0742-8176 ; University of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11000 Belgrade, Serbia

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Abstract

Achieving the superior properties of nanocomposite materials involves addressing several challenges, particularly the agglomeration of nanoparticles in the plating bath. This study focuses on the electrodeposition and characterization of Zn-Co-CeO2 composite coatings using a particle-free plating bath, an effective strategy for mitigating agglomeration. For comparison, the composite coatings were also deposited from a traditional biphasic plating solution. The coatings were deposited galvanostatically at various current densities. Scanning electron microscopy revealed that using a particle-free plating solution in conjunction with lower current densities enhanced the compactness and the overall quality of the coatings. Lower current densities favoured the codeposition of particles, as indicated by energy-dispersive X-ray spectroscopy results. Notably, the coatings produced from the particle-free bath exhibited significantly improved corrosion resistance and durability in chloride-rich environments, attributed to their self-healing properties, as shown by electrochemical impedance spectroscopy.

Keywords

Zn-Co-CeO2; smart nanomaterials; self-repair; ceria-doping; nanocomposite

Hrčak ID:

328665

URI

https://hrcak.srce.hr/328665

Publication date:

26.10.2024.

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