Surface Acid-Base, and Electrokinetic Properties of Si3N4, ZrO2, Al2O3, Y2O3, and TiO2 Powders

Electrosteric Stabilization of Al2O3, ZrO2, and 3Y–ZrO2 Suspensions: Effect of Dissociation and Type of Polyelectrolyte

“…The IEP of pure monoclinic ZrO 2 (IEP = 6.4) is slightly lower than the IEP of the polycrystalline 3Y-ZrO 2 (IEP = 6.6), which contains Y 2 O 3 (31)(32)(33). The dopant Y 2 O 3 is highly basic in character and dissolves in acidic solutions (31). The dissolution of trivalent Y 3+ ions from 3Y-ZrO 2 increases as well toward lower pH in the acidic range (34), and toward higher temperature (35).…”

“…9b and 9c). The IEP of pure monoclinic ZrO 2 (IEP = 6.4) is slightly lower than the IEP of the polycrystalline 3Y-ZrO 2 (IEP = 6.6), which contains Y 2 O 3 (31)(32)(33). The dopant Y 2 O 3 is highly basic in character and dissolves in acidic solutions (31).…”