Powder of coagulated spherical zirconia particles and process fo

Details Powder of coagulated spherical zirconia particles and process fo Powder of coagulated spherical zirconia particles and process fo

1986-03-04

1989-10-10

Dixon, Jr., William R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ivb metal

423608, 501103, 501104, C04B 3548

Patent

active

048730645

ABSTRACT:
Calcined powder of coagulated spherical particles having a secondary coagulated particle size of 0.2 .mu.m to 3 .mu.m, composed of primary particles of less than 500 .ANG. in the crystalline size, and obtained by calcining ultrafine zirconia particles with or without other metal compounds is disclosed. As the ultrafine zirconia particles, coagulated spherical zirconia particles composed of ultrafine monoclinic primary particles of less than 100 .ANG. in the crystalline size, coagulated with each other into a substantially spherical shape with the size of the coagulated particles being in a range from 0.2 .mu.m to 3 .mu.m is preferably used.

REFERENCES:
patent: 4543341 (1985-09-01), Barringer et al.
patent: 4719091 (1988-01-01), Wusirika

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