Preparation of mono-sized zirconia powders by forced hydrolysis

Details Preparation of mono-sized zirconia powders by forced hydrolysis Preparation of mono-sized zirconia powders by forced hydrolysis

1986-07-01

1988-01-12

Garvin, Patrick P.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

423 85, 423266, 423608, 501103, 501104, C01G 2502

Patent

active

047190914

ABSTRACT:
Substantially spherical mono-sized particles of zirconia can be prepared by the forced hydrolysis of an aqueous solution of zirconyl chloride. A zirconyl chloride solution having a molarity up to about 0.4 is heated for at least 72 hours at a temperature of at least 95.degree. C. to generate suspended particles of hydrated zirconium oxide, which are recovered and calcined to provide the mono-sized zirconia powders. In preferred embodiments, mono-sized powders of a mixture of zirconia with one or more of its stabilizing metal oxides is prepared by precipitating the metal in the form of its hydroxide onto pre-formed zirconium-containing particles.

REFERENCES:
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patent: 4365011 (1982-12-01), Bernard et al.
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"Technique for Preparing Highly-Sinterable Oxide Powders", Dole et al., 32 Materials Science and Engineering 277, (1978).
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