Ceramic composition
US4452906A · kind A · utility
2Cited by
3References
5Claims
0Family size
Inventor
Key dates
| Filing date | Feb 3, 1983 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Feb 3, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/111
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Improved ceramic compositions useful for cutting tools and the like are described. They are composed of an essentially homogeneous admixture of sintered powders of an aluminum oxide base material with other refractories including zirconium oxide, titanium oxide, hafnium oxide, titanium nitride, zirconium nitride, and tungsten or molybdenum carbide. In addition to their common and improved properties of hardness and strength, many of these compositions may be made by simple cold-pressing and sintering procedures. This avoids the known drawbacks of conventional hot press production.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.