Diamond and CBN cutting tools

Details Diamond and CBN cutting tools Diamond and CBN cutting tools

1993-10-29

1995-08-15

Walsh, Donald P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428548, 428552, B22F 314

Patent

active

054418178

ABSTRACT:
There is provided a method for making diamond and CBN composites, under HP/HT conditions, which comprises bonding a thin refractory material layer on the planar face of the tungsten carbide substrate proximate the diamond or CBN layer. There is also provided a small quantity of fine particles of yet another refractory material admixed in the diamond or CBN layer. The cooperation of these two systems greatly aid in regulating the flow of molten carbide bond metal from the substrate into the diamond or CBN layer, which minimizes abnormal grain growth and bond metal depletion at the diamond/substrate interface.

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patent: 4766040 (1988-08-01), Hillert
patent: 5022894 (1991-06-01), Vagarali
patent: 5022894 (1991-06-01), Vagarali et al.
patent: 5326380 (1994-07-01), Yao et al.

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