Cemented carbide with binder phase enriched surface zone
US5729823A · kind A · utility
24Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1996 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Mar 14, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12056
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to a cemented carbide insert, comprising a cemented carbide substrate and a coating. The substrate contains WC and cubic carbonitride phase in a binder phase based of Co and/or Ni and has a binder phase enriched surface zone essentially free of cubic phase. The binder phase enriched surface zone prevails over the edge. As a result, an insert according to the invention has improved edge toughness and resistance against plastic deformation and is particularly useful for machining of sticky work piece materials such as stainless steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.