Method of making a diamond particle suspension and method of making a polycrystalline diamond article therefrom

摘要

A method of forming a polycrystalline diamond compact from_a substantially homogeneous suspension of nanodiamond particles and microdiamond particles is disclosed The method includes disposing a first functional group on a plurality of nanodiamond particles to form derivatized nanodiamond particles, and combining the derivatized nanodiamond particles with a plurality of microdiamond particles, metal solvent-catalyst particles and a solvent to form a substantially homogeneous suspension of these particles in the solvent. A method of making an article is also disclosed. The method includes forming a superabrasive polycrystalline diamond compact by combining: a plurality of derivatized nanodiamond particles, a plurality of derivatized microdiamond particles having an average particle size greater than that of the derivatized nanodiamond particles, and a metal solvent-catalyst.

主权项

1. A method of forming a polycrystalline diamond compact from a substantially homogeneous suspension of nanodiamond particles, microdiamond particles, and metal solvent-catalyst particles, comprising:
disposing a first functional group on a plurality of nanodiamond particles to form derivatized nanodiamond particles; combining the derivatized nanodiamond particles with a plurality of microdiamond particles, metal solvent-catalyst particles, and a solvent to form a substantially homogeneous suspension of the derivatized nanodiamond particles, microdiamond particle and metal solvent-catalyst particles in the solvent; and forming a polycrystalline diamond compact from the homogenous suspension of derivatized nanodiamond particles, microdiamond particles, and metal solvent catalyst particles, wherein forming comprises:
forming a polycrystalline diamond precursor by removing the solvent, andprocessing the polycrystalline diamond precursor under conditions of heating and pressure to form the polycrystalline diamond compact, the polycrystalline diamond compact comprising a superabrasive.