Effect of Deposition Potential on ZnNi Coating Corrosion Behaviour

Kendai Marcelli (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta 13220, Indonesia)
Mega Gladiani Sutrisno (The Center for Science Innovation, Jakarta Timur 13120, Indonesia)

Chemistry and Materials
Vol. 2 No. 2 (2023)

ZnNi coatings were deposited using the electrochemical deposition method. In this study, the effect of potential electrodeposition on deposited properties, morphology, and size of ZnNi alloy nanoparticles was investigated in detail. The as-synthesized products were characterized by ZnNi coating properties is characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM),  energy dispersive X-ray spectroscopy (EDX), and electrochemical impedance spectroscopy (EIS).  The result indicated that the electrodeposition processes of ZnNi were governed by a nucleation process controlled by diffusion. XRD results showed that the phase structure of both alloy and composite coatings was single ZnNi phase. Potential increase influences the larger crystal size and the surface of coating was compact and uniform, the Rct increase, and greater the icorr so that the possibility of corrosion is higher.