Electrodeposition of ZnNi Alloys from Ethylene Glycol/Choline Chloride Based Ionic Liquid

Abstract

Zinc alloys containing transition metals (Ni, Co and Fe) have attracted the attention because of their high corrosion resistance. In the framework of non-aqueous solution, improved deposit quality and process efficiency are expected with respect to aqueous ones. In this work, eutectic mixture of molar ratio 1 choline chloride: 4.5 ethylene glycol is considered. Codeposition of zinc and nickel is studied as a function of the metal salts concentration; particular attention is paid to the formation of Zn rich alloys (15-25 % wt. Ni).

Electrodeposition of ZnNi Alloys from Choline Chloride/Ethylene Glycol Deep Eutectic Solvent and Pure Ethylene Glycol for Corrosion Protection

“…Ethylene glycol based DES (1ChCl:2EG), on the other hand, was first investigated for the ZnNi alloy electrodeposition by Pereira et al, 8 focusing on the effect of amines on the morphology of zinc-rich films having 5–7% wt Ni. The system was allowed to cover a broader compositional window (3–80% wt Ni), 44 at a fixed electrolyte composition, with respect to the urea based one.…”