C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 35/48 (2006.01) C04B 41/45 (2006.01) C04B 41/52 (2006.01) C04B 41/81 (2006.01) C04B 41/89 (2006.01)
Patent
CA 2079973
ABSTRACT OF THE DISCLOSURE METALLIC OXIDES A process for coating particulate zirconia for use in ceramics is claimed. The particulate zirconia is coated with a hydrous oxide of a stabilising metal such as yttrium, an alkaline earth metal or a rare earth metal by hydrolysis of a salt of the metal. An initial dispersion of the zirconia is prepared at a pH above 7.5 and, preferably, in the presence of an organic dispersing agent. The coated zirconia produced according to the process has been shown to form ceramic bodies with a higher strength than those prepared from particulate zirconia coated by prior known processes.
Dransfield Graham P.
King Denis J.
Sim & Mcburney
Tioxide Group Services Limited
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