Sintered ceramics for cutting tools and manufacturing process thereof
US4325710A · kind A · utility
18Cited by
6References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1980 |
| Grant date | Apr 20, 1982 |
| Priority date | — |
| Expiry date | Mar 11, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB24D3/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A sintered ceramics for cutting tools having a relative apparent density of not less than 98% is obtained by sintering a mixture substantially consisting of 80-95% by volume alumina and the balance of titanium nitride and Zr-containing component(s) such as Zr, ZrC and/or ZrN wherein the volumetric ratio of TiN /Zr-containing component(s) ranges 95/5-50/50 in vacuum and/or vacuum inert atmosphere. Although the present invention does not need any application of hot pressing or HIP process, the resultant ceramics has an improved abrasion resistance comparable to those obtained by the latter processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.