Coated cutting tool
US6565957B2 · kind B2 · utility
31Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Mar 30, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A coated cutting tool has high wear resistance in a high-speed cutting operation of steel. The tool is made of a hard sintered substrate and has a hard coating layer deposited on a surface of the substrate. This hard coating layer includes a hard material layer and an inner layer having 0.1 to 10 &mgr;m for an average thickness with residual compressive stress. The inner layer is applied by physical vapor deposition. The hard coating layer also has an aluminum oxide layer as an outer layer having 0.1 to 5 &mgr;m for an average thickness. This outer layer is applied by chemical vapor deposition at a middle temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.