Alumina ceramic
US4285732A · kind A · utility
57Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1980 |
| Grant date | Aug 25, 1981 |
| Priority date | — |
| Expiry date | Mar 11, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9623
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A particulate dispersion of .alpha.-alumina, magnesium oxide and an additive selected from the group consisting of zirconium oxide, hafnium oxide and mixtures thereof, is formed into a green body and sintered in hydrogen producing a theoretically dense ceramic with improved optical transmission properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.