Patent ID: 9089951
Filing Date: 2015-07-28
Classification: B22F,B24D,C22C,E21B

Abstract:
1. A method of fabricating a polycrystalline diamond material, comprising: placing a powder layer of nano-sized grain growth inhibitor particles next to a mixture of diamond particles, the mixture of diamond particles having an average particle size of about 1 micron or or less, the grain growth inhibitor layer comprising a plurality of titanium-containing particles being less than 800 nanometers in size; placing a substrate next to the powder layer; and sintering the mixture of diamond particles and the powder layer of grain growth inhibitor particles at high pressure and high temperature to create a polycrystalline structure of sintered diamond grains, wherein the sintered diamond grains have an average size of about 1 micron or or less and the grain growth inhibitor is bonded to the substrate and to the polycrystalline diamond at opposite sides and is about 20-100 microns in thickness.