Boride coated cemented carbide

Details Boride coated cemented carbide Boride coated cemented carbide

B - Operations, Transporting

32

B

117/225, 117/74.

B32B 7/02 (2006.01) B23B 27/14 (2006.01) B24D 3/34 (2006.01) C23C 16/38 (2006.01) C23C 30/00 (2006.01)

Patent

CA 1149245

60MP-1068 ABSTRACT OF THE DISCLOSURE A coated cemented carbide article comprises a cemented carbide substrate, the surface regions thereof having diffused therein an element such as boron, silicon or aluminum. The article further comprises a coating disposed on the diffused substrate, the coating being a boride such as titanium boride, hafnium boride, zirconium boride or tantalum boride. In another embodiment the coated cemented article further includes an interlayer sandwiched between the diffused substrate and the boride coating, the interlayer being one or more layers formed from the carbides, nitrides or carbonitrides of elements from groups IVb and Vb of the Periodic Table of Elements, and combinations thereof.

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