Chromium-containing cemented carbide body having a surface zone of binder enrichment
US6554548B1 · kind B1 · utility
22Cited by
38References
29Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 11, 2000 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Aug 11, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A coated cemented (binder alloy, e.g., cobalt-chromium alloy) tungsten carbide cutting insert that comprises a substrate and a coating. The substrate contains at least about 70 weight percent tungsten and carbon, between about 3 weight percent and about 12 weight percent cobalt, and at least 0.09 weight percent chromium. The substrate presents a surface zone of binder alloy enrichment that begins near (or at) and extends inwardly from a peripheral surface of the substrate. The coating includes a base layer that contains chromium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.