Effect of the Interparticle Pair Potential on the Rheological Behavior of Zirconia Powders: II, the Influence of Chem-Adsorbed Silanes

Abstract

The influence of two bifunctional aminosilanes, N-(triethoxysilylpropyl)-O-polyethylen oxid urehtan (PEG-silane) and N-(3-triethyoxsilylpropyl) gluconamid (Glucolsilane), on the rheological behavior of aqueous zirconia (solid solution with 3 mol% Y2O3) powder slurries and consolidated bodies was investigated. Adsorption of the silanes was determined with viscosity measurements. The influence of tetramethylammonium (TMA) chloride added to dispersed slurries to produce weakly attractive particle networks, formulated with the aminosilane reacted powders was investigated. Bodies were consolidated by filtration at different applied pressures. Viscosity vs shear rate behavior, and consolidated bod..