Method of preparing coated cemented carbide product and resulting product
US4282289A · kind A · utility
52Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1980 |
| Grant date | Aug 4, 1981 |
| Priority date | — |
| Expiry date | Apr 16, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved process for the production of coated cemented carbide products is disclosed. A cemented carbide substrate is treated to form a metal carbide, nitride or carbonitride coating. During the last part of this treatment or subsequent thereto, a sulfur-and/or nitrogen-containing gas is added to the atmosphere to form a sulfide-and/or nitride - containing layer on the coating. Thereafter, a wear-resistant oxide (e.g., aluminum oxide) coating is applied to form the improved coated cemented carbide product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.