Surface-coated hard material for cutting tools or wear-resistant tools
US7820308B2 · kind B2 · utility
4Cited by
15References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2004 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Nov 17, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention provides a thin film coated on a cutting tool surface made of cemented carbides, cermets or ceramics. According to the present invention, an α-Al2O3thin film is deposited on a TiAlvBwCxNyOz (v+w+x+y+z=1, v, w, x, y, z≧0) thin film in a thickness of 2-15 μm, so that the ratio of TC (104) (denoting the texture coefficient of the (104) crystal plane of the polycrystalline α-Al2O3 thin film) to TC (012) (denoting the texture coefficient of the (012) crystal) is more than 1.3. Cutting tools coated with such a thin film have improved wear resistance and adhesion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.