Synergistic Effect of Brightener and Solution Temperature on the Electrodeposition Behavior of Zn–Ni Alloy from Alkaline Zincate Solution

Zn–Ni alloys were electrodeposited on a Cu electrode at 10–5000 A·m−2, 5 × 104 C·m−2, 293 K, 313 and 333 K in unagitated zincate solutions containing the reaction product of epichlorohydrin imidazole (IME) as brightener. The synergistic effect IEM solution temperature deposition behavior was investigated. transition current density which shifted from normal to anomalous one decreased with IME but did not change regardless addition K. suppression Zn Ni depositions during alloy observed while maintained deposition. Therefore, content deposits significantly increased. efficiency small degree decrease C highest increasing temperature, indicating that adsorption ability cathode decreases temperature. As result, gloss deposited films attributed being large fine crystals becoming smooth.