Surface Acid-Base, and Electrokinetic Properties of Si3N4, ZrO2, Al2O3, Y2O3, and TiO2 Powders
The surface acid-base properties of Si3N4, ZrO2, Al2O3, Y2O3, and TiO2 powders have been estimated by the nonaqueous titration method using a series of Hammet indicators, and correlated with electrophoretic measurements. All powders are components in slips for different casted ceramics. Pure and yttrium stabilized zirconia as well as rutile and anatase forms of titania were analyzed. The results show good correlation between the rank orders of the iso electric points (IEP:s) and the acid-base properties of the powder surfaces studied.
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