Preferentially binder enriched cemented carbide bodies and method of manufacture
USRE34180E · kind E · reissue
42Cited by
33References
107Claims
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Key dates
| Filing date | Sep 9, 1988 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Sep 9, 2008 |
Classification
- Technology area (CPC —)General
Abstract
Cemented carbide substrates having substantially A or B type porosity and a binder enriched layer near its surface are described. A refractory oxide, nitride, boride, and/or carbide coating is deposited on the binder enriched surface of the substrate. Binder enrichment is achieved by incorporating Group IVB or VB transition elements. These elements can be added as the metal, the metal hydride, nitride or carbonitride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.