ADSORPTION AS A METHOD OF DOPING 3-MOL-PERCENT-YTTRIA-STABILIZED ZIRCONIA POWDER WITH COPPER-OXIDE

The adsorption behavior of Cu2+ on 3-mol%-yttria-stabilized tetragonal zirconia polycrystalline (3Y-TZP) powder was studied. There is a wind ow of pH values (10 < pH < 11) where adsorption may be used as a metho d of doping 3Y-TZP with Cu2+. The maximum mole percent of the CuO addi tions is determined by the specific surface area of the 3Y-TZP powder; a powder with a specific surface area of 16.1 m2/g is limited to abou t 1 mol % CuO. Compacts made from powders doped with CuO using this me thod exhibited an enhancement in superplasticity comparable to that ob served in other studies using samples doped with CuO by attrition mill ing.