Electrocodeposition of Nanocomposite Films

摘要

Electrocodeposition is the process of particle incorporation during the electrodeposition ofmetal, producing metal matrix composite films. The electrocodeposition of nanometer-sizedalumina particles in a copper matrix was systematically studied using a concentric cylindricalelectrode (RCE) configuration. This electrode set-up allows the effects of hydrodynamics onparticle incorporation to be investigated, with films that can be deposited either on the interiorrotating or outer stationary cylinder. The deposition experiments were conducted with 50 nmdiameter alumina particles as a function of particle size, solids loading, bath composition,electrode rotational rate, and current density up to mass transfer limited conditions. Gradientfilms have been made and also the effects of particle incorporation on the microstructure havebeen investigated. Recently, electrocodeposition of titania in nickel has been studied.