Composite article with adherent CVD diamond coating and method of making
US6267867A · kind A · utility
17Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 27, 1999 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Apr 27, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C16/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for coating a tungsten carbide base material substrate with CVD diamond film includes carburization and gas-assisted vaporization of cobalt from the surface with simultaneous recrystallization of surface grains of tungsten carbide to change their stoichiometry for improved adherence. Also disclosed is a WC--Co cutting tool having a relatively fine WC grain size and being coated with adherent CVD diamond.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.