THE ELECTROPHORETIC VELOCITY AND DEPOSITION OF PARTICLES OF FINELY DISPERSED CERAMIC POWDERS IN DIMETHYLFORMAMIDE

The electrophoretic velocity and mobility in dimethylformamide of part icles of finely dispersed powders of silicon carbide and eutectic mixt ures of aluminum, magnesium, yttrium, and zirconium oxides with differ ent chemical compositions and particle size distributions were determi ned by the.electrophoresis technique at the strength of the external e lectric field E-0 less than or equal to 150 V/cm. The motion of partic les in dimethylformamide and their deposition on coarsely-porous ceram ics at E-0 less than or equal to 300 V/cm were studied by the moving b oundary macroscopic method. Values of the zeta-potential for positivel y charged particles were calculated by the Helmholtz-Smoluchowski form ula. Filtration properties of the electrophoretic coatings of multilay er ceramic membranes are considered.