Silicon nitride based cutting tool
US4607017A · kind A · utility
8Cited by
4References
1Claims
0Family size
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Key dates
| Filing date | Jun 20, 1985 |
| Grant date | Aug 19, 1986 |
| Priority date | — |
| Expiry date | Jun 20, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T82/29
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A silicon nitride based cutting tool is disclosed consisting essentially of in percent by weight about 5% aluminum oxide, about 6% yttrium oxide, from about 1.5% to about 5.5% silicon dioxide, and the balance silicon nitride, and having a density of at least about 99% of the theoretical density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.