Electrophoretic deposition of ceramic particles and their penetration into the pores of graphite and a 2-dimensional C-C composite were demonstrated and studied theor. and exptl. for colloidal SiO2, SiC, Si3N4, Al2TiO5, and HfTiO4. The effect of deposition parameters (field intensity, particle concentration, ratio of dielec. constant/viscosity of fluid) on the amount of induced material was exptl. studied. Penetration depth of particles as a function of the above parameters was analyzed theor. Penetration is enhanced by large Peclet numbers and is therefore higher in aqueous suspensions, while coating morphol. is better in propanol suspensions. Optimal conditions for coverage and penetration in a two-stage process were therefore determined Subsequent deposition of 2 layers was demonstrated and studied for Si3N4 on Al2TiO5 and SiC on a glass-ceramic.