Method for making polycrystalline sandwich compacts

Details Method for making polycrystalline sandwich compacts Method for making polycrystalline sandwich compacts

1988-11-30

1991-04-23

Hunt, Brooks H.

Abrasive tool making process, material, or composition

Miscellaneous

51307, 264125, B24D 1800

Patent

active

050096737

ABSTRACT:
Disclosed is a method for manufacturing a polycrystalline sandwich compact comprising a polycrystalline diamond or CBN core interposed between outer support layers. The method comprises providing an assembly comprising a mass of diamond or CBN particles, a pair of compression disks, and two metal layers, one of each of which is interposed between said mass and each said compression disk. When said mass comprises diamond particles, a source of sintering aid/catalyst for diamond sintering also is provided in the assembly and optionally for CBN particles a source of sintering aid/catalyst for CBN sintering is provided in said assembly. The assembly then is subjected to HP/HT sintering for forming a sintered polycrystalline diamond or CBN core having two metal-derived support layers adherently bound thereto.

REFERENCES:
patent: 4219339 (1980-08-01), Wilson
patent: 4764434 (1988-08-01), Aronsson et al.
patent: 4797326 (1989-01-01), Csillag
patent: 4906528 (1990-03-01), Cerceau
patent: 4907377 (1990-03-01), Csillag et al.
patent: 4944772 (1990-07-01), Cho

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