Homogeneous powders of yttrium-stabilized quadratic zirconia
US5008092A · kind A · utility
1Cited by
15References
23Claims
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Key dates
| Filing date | Sep 29, 1988 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Sep 29, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Finely divided homogeneous powders of yttrium-stabilized, essentially quadratic zirconia have a narrow particle size distribution, and are prepared by (a) adjusting the pH of a mixed aqueous solution of zirconyl and yttrium acetates to a value of at least 5, (b) eliminating the solvent from such mixed aqueous solution, and (c) pyrolyzing the solid residue resulting from the step (b).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.