METHOD FOR PRODUCING A SINTERED, SUPPORTED POLYCRYSTALLINE DIAMOND COMPACT

摘要

A sintered supported polycrystalline diamond compact (PCD) having improved abrasion resistance properties is manufactured by subjecting diamond crystals placed in adjacency with a metal carbide support containing a catalyst/sintering aid to high pressure/high temperature (HP/HT) processing. Said PCD compact comprises: a) a body of diamond crystals comprising a mixture of about 60 wt.% to about 90 wt.% of coarse fraction having an average particle size ranging from about 15 to 70 mum and a fine fraction being about not substantially greater than about onr half of the average particle size of said coarse fraction; and b) a support body comprising about 20 vol. % or less of a catalyst/sintering aid.