Electrophoresis in the sol-gel formation of heterophase thin-film coatings

The electrophoretic precipitation of a nanodispersed BaTiO3 powder in titanium and silicon alkoxide sol systems instead of organic solvent media has been investigated. The conditions leading to formation of heterophase thin-film coatings with uniformly distributed filler particles in the SiO2 or TiO2 filmforming matrices have been found. The dependence of the BaTiO3 aggregate shape and percolation cluster type on the nature of sols has been studied.