Polycrystalline diamond body

Details Polycrystalline diamond body Polycrystalline diamond body

B - Operations, Transporting

24

D

18/1125, 57/16

B24D 3/06 (2006.01) B01J 3/06 (2006.01) B22F 3/14 (2006.01) B24D 3/08 (2006.01) C09K 3/14 (2006.01) C22C 26/00 (2006.01)

Patent

CA 1136428

Abstract of the Disclosure An adherently bonded polycrystalline diamond body is produced by forming a charge composed of a mass of diamond crystals in contact with a mass of eutectiferous silicon-rich alloy wherein the alloy is in contact or in association with hexagonal boron nitride, confining such charge within a reaction chamber, subjecting the confined charge to a pressure of at least 25 kilobars, heating the pressure-maintained charge to a temperature sufficient to melt the alloy and at which no signifi- cant graphitization of the diamond occurs whereby the alloy in- filtrates through the interstices between the diamond crystals producing said body.

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