Sintered ceramic body for cutting tools
US4204873A · kind A · utility
11Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1979 |
| Grant date | May 27, 1980 |
| Priority date | — |
| Expiry date | May 10, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/117
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A sintered ceramic body for use in cutting tools which has an average crystal grain size of not more than about 2.mu. and comprises about 60 to 95% by volume of (a) Al.sub.2 O.sub.3 and the remainder being composed of (b) WC, provided that it may contain W.sub.2 C in which case the intensity ratio I.sub.W.sbsb.2.sub.C (101)/I.sub.WC (111) in X-ray diffraction using CuK.alpha. rays is not more than about 0.5, and (c) TiN, the volume ratio of components (b) to (c) being about 5:95 to 95:5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.