Compositions: ceramic – Ceramic compositions – Refractory
Patent
1991-03-06
1992-05-12
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Refractory
501103, 501104, 264DIG19, 423266, 423608, C04B 3548, C01G 2502
Patent
active
051127814
ABSTRACT:
Zirconium based granules are produced by the steps of forming an aqueous solution of a zirconium compound such as zirconium acetate, combining the aqueous solution with a phase stabilizer, and then heating the solution to evaporation thereby forming amorphous zirconium based granules.
In an alternate embodiment, an alcohol solution of a zirconium compound such as zirconium propoxide in propanol is acidified and hydrolyzed with water. The partially or fully hydrolyzed zirconium complex is mixed with a phase stabilizer to form a homogeneous solution. The solution is then subjected to evaporation by heat to form amorphous zirconium based granules.
Zirconia fibers are produced by making aqueous solutions of the amorphous zirconium based granules containing the phase stabilizer to the desired viscosity, fiberizing the solution, and finally converting the fibers under appropriate conditions.
REFERENCES:
patent: 3270109 (1966-08-01), Kelsey
patent: 3416953 (1968-12-01), Gutzat et al.
patent: 3996145 (1976-12-01), Hepburn
patent: 4722833 (1988-02-01), Kato
Dixon Jr. William R.
Green Anthony J.
Manville Corporation
Quinn Cornelius P.
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