Abstract
Electrophoretic deposition (EPD) is a colloidal process wherein ceramic bodies are directly shaped from a stable colloid suspension by a dc electric field. In this study, an attempt was made to investigate the role of phosphate esters on the stability of alumina ethanol suspensions and the corresponding effects on the electrophoretic deposition characteristics. The use of phosphate esters as dispersants enabled cathodic deposition of alumina particles with high green density. The mechanism of particle charging was investigated by measuring deposition yield, suspension pH, conductivity and zeta-potential at various experimental conditions.
