Effects of electrodeposition parameters on morphology and properties of Zn–TiO 2 composite coating

This study investigates the effects of electrodeposition parameters on the morphology and properties of Zn–TiO2 composite coatings, which offer enhanced mechanical and tribological characteristics compared to traditional metallic coatings. The primary objective is to determine how variations in bath temperature, stirring rate, and titania concentration influence the physical and mechanical properties of the coatings. The methodology involves codepositing titania particles with zinc onto plain carbon steel substrates followed by analyzing the electrodeposited samples using optical microscopy, scanning electron microscopy, and atomic force microscopy. Measurements of microhardness and wear resistance were conducted to assess the coatings' performance. The findings indicate that optimal conditions for achieving maximum codeposition of reinforcement particles, as well as enhanced hardness and wear resistance, were established at a bath temperature of 40°C, a stirring rate of 300 revolutions per minute, and a titania concentration of 5 g L-1. This research shows the potential for improving composite coatings through careful management of electrodeposition parameters.