Electrodeposition and enhanced corrosion resistance of Zn-Ni alloy coatings with organic additives on low-carbon steel

Hawa Bendebane; Salima Bendebane; Rabah Rehamnia; Samia Amirat

doi:10.3989/revmetalm.e255.1664

Authors

Hawa Bendebane Badji Mokhtar - Annaba University https://orcid.org/0000-0002-4933-2335
Salima Bendebane National Higher School of Technology and Engineering https://orcid.org/0000-0001-5915-087X
Rabah Rehamnia Badji Mokhtar - Annaba University https://orcid.org/0000-0001-5496-3660
Samia Amirat Badji Mokhtar - Annaba University https://orcid.org/0000-0002-3194-2063

DOI:

https://doi.org/10.3989/revmetalm.e255.1664

Keywords:

Corrosion resistance, Electrodeposition, Low-carbon steel, Organic additives, Protection, Zn-Ni alloy coatings

Abstract

Corrosion remains a critical challenge for numerous industrial sectors, leading to substantial economic losses worldwide. This study investigates the electrodeposition of Zn-Ni alloy coatings on low-carbon steel using sulfate-based baths, with and without the incorporation of organic additives such as saccharin and 2-butyne-1,4-diol. The influence of these additives on coating properties was thoroughly examined. Results revealed notable enhancements in microhardness, surface morphology, and corrosion resistance when additives were present. Structural and compositional analyses (EDS, XRD) confirmed an increased nickel content, which correlated with improved electrochemical performance. Overall, the additive-assisted Zn-Ni coatings exhibited superior protective behavior, highlighting their potential for prolonging the lifespan of metallic components in aggressive environments.

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