Silicon nitride sintered product excellent in wear resistance
US5326733A · kind A · utility
9Cited by
6References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 7, 1992 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Dec 7, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/5935
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A silicon nitride sintered product for use in cutting tools and the like which has silicon nitride as a predominant phase, and comprises 0.1 to 1% by weight of Al as calculated on the basis of Al.sub.2 O.sub.3, the total amount of sintering aid constituents other than Al being 6% by weight or less on the oxide basis, the content of the grain boundary glassy phase being 8% by volume or less. The silicon nitride sintered product preferably has a relative density of 99% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.