Reactive zirconium oxide and its preparation
US4946665A · kind A · utility
13Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1989 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Mar 17, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to the chemistry of zirconium. It relates particularly to a reactive zirconium oxide in the form of fine particles whose median diameter does not exceed 10 .mu.m, which has a structure chosen from the amorphous structure and the structure crystallized in the tetragonal form, the size of the elementary coherence regions in the latter case being between 10 and 30 nm, and which has a B.E.T. surface area of at least 30 m.sup.2 /g, and to a process for its preparation. Use in the field of ceramic materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.