Effect of parameters on the electrodeposition of Ni-TiO₂ nanocomposite coatings

The Ni-TiO₂ composite was formed from nickel chloride solution by coelectrodeposition. Effect of stirring rate, current density, kind of current, electrodeposition time and concentration of TiO₂ in the solution on the codeposition of the particle in the nanocomposite coating was investigated. The composition of coating was characterized with energy dispersive analyzer system (EDX). Results showed that, the amount of nano-TiO₂ embedded in coatings depended on these factors. When the amount of nanoparticles in bath of electrochemical was 6 g/1, the codeposition of the TiO₂ particle in the matrix reached 10.53% at current density 3 A/dm², stirring rate of 600 rpm and 20 minutes electrodeposition. (author)