High-performance multi-response optimization of new nanocomposite coating formulation of zinc reinforced with calcium oxide nanoparticle synthesis from oyster shell via one-step electrodeposition approach

The effect of electrodeposition parameters on the synthesis of new nanocomposite coating formulations of zinc reinforced with calcium oxide nanoparticles (CaOnp) from oyster shells was studied. The g/l calcium oxide nanoparticles (CaOnp), current density, deposition temperature, and times were the stir electrodeposition parameters, while electrical conductivity, hardness values, and corrosion rate were used as the multi-responses for the study. The experimental results were in good accordance with model prediction values. The optimium conditions were obtained at 10g/lCaOnp, 80 °C deposition temperature, 1.5A/cm² current density, and 15-min deposition time. The smaller crystallite size of the deposited sample is the main reason for the lower corrosion resistance and higher hardness values obtained. It was established that waste oysters can be used for the electrodeposition of mild steel to enhance corrosion resistance and hardness values.