Polycrystalline diamond body/silicon carbide or silicon...

Details Polycrystalline diamond body/silicon carbide or silicon... Polycrystalline diamond body/silicon carbide or silicon...

B - Operations, Transporting

24

D

18/1125, 25/133,

B24D 3/08 (2006.01)

Patent

CA 1111664

Abstract of the Disclosure A mass of diamond crystals in contact with a mass of eutectiferous silicon-rich alloy and a silicon carbide or silicon nitride ceramic substrate axe disposed in a container and placed within a pressure transmitting powder medium. Pressure in applied to the powder medium resulting in substantially isostatic pressure being applied to the container and its contents sufficient to dimensionally stabilize the container and its contents. The resulting shaped substantially isostatic system of powder-enveloped container is hot-pressed, whereby fluid eutectiferous sili- con rich alloy is produced which infiltrates through the interstices between the diamond crystals and contacts the contacting face of the substrate sufficiently to produce, upon cooling, an adherently bonded integral composite.

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