Study on electrodeposition behaviour and corrosion resistance of nickel-copper alloy in ChCl-EG deep eutectic solvents.

Choline chloride-ethylene glycol (ChCl-EG) deep eutectic solvents were used as the electrolytes to study the cathode reduction process. The electrochemical behaviour of nickel and copper ions in ChCl-EG, the morphology, phase composition and corrosion resistance of the coatings were characterized. The results showed that the increase in the temperature of the electrodeposition solution system can make the reduction potentials of nickel and copper ions approaching, making it easier to achieve co-deposition. When the temperature of the solution was 70°C, a nickel-copper alloy similar to the commercial Monel (Ni70Cu30) with good corrosion resistance can be obtained. [ABSTRACT FROM AUTHOR]