Preferentially binder enriched cemented carbide bodies and...

Details Preferentially binder enriched cemented carbide bodies and... Preferentially binder enriched cemented carbide bodies and...

C - Chemistry, Metallurgy

22

C

25/140

C22C 29/08 (2006.01) C22C 29/04 (2006.01) C22C 29/06 (2006.01) C23C 30/00 (2006.01)

Patent

CA 1174438

TITLE OF THE INVENTION PREFERENTIALLY BINDER ENRICHED CEMENTED CARBIDE BODIES AND METHOD OF MANUFACTURE ABSTRACT OF THE DISCLOSURE 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.

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