Sweep through process for making polycrystalline compacts

Details Sweep through process for making polycrystalline compacts Sweep through process for making polycrystalline compacts

1983-09-23

1985-05-21

Padgett, Ben R.

Stock material or miscellaneous articles

Metal continuous phase interengaged with nonmetal continuous...

75231, 75243, 75244, 51307, 51309, 156DIG68, 423290, 423446, 419 2, 419 11, 419 13, 419 26, 419 47, B24D 310, C01B 2164, B01J 306

Patent

active

045186596

ABSTRACT:
The high pressure/high temperature catalyst sweep through process for making diamond and cubic boron nitride compacts has been improved by adding an intermediate metal or metal alloy. The added metal (whether alone or contained in an alloy) has a melting point below that of the catalyst (e.g. cobalt), is miscible with the catalyst, and preferably sweeps through the mass of abrasive crystals first. This modification has reduced flaw formation in such compacts.

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