PVD Al2O3 coated cutting tool
US6383624B1 · kind B1 · utility
11Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 2000 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | May 4, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/252
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention describes a coated CBN cutting tool for metal machining. The tool consists of one or more CBN substrate bodies with or without carbide backing. The coating is composed of one or more layers of refractory compounds of at least one layer of fine-grained, crystalline &ggr;-phase alumina (Al2O3) with a grainsize less than 0.1 &mgr;m. The Al2O3-layer is deposited with a bipolar pulsed DMS technique (Dual Magnetron Sputtering) at substrate temperatures in the range 450° C. to 700° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.