Use of surface modified diamond to manufacture polycrystalline diamond

Abstract

A superabrasive blank and a method of making the superabrasive blank are disclosed. A superabrasive blank may comprise a plurality of polycrystalline superabrasive particles made of surface modified superabrasive particles. The surface modified superabrasive particles may have sphericity less than about 0.70. The substrate attached to a superabrasive volume formed by the polycrystalline superabrasive particles.

We claim: 
     
         1 . A superabrasive blank, comprising:
 a plurality of polycrystalline superabrasive particles made of surface modified superabrasive particles, wherein the surface modified superabrasive particles have sphericity less than about 0.70; and   a substrate attached to a superabrasive volume formed by the polycrystalline superabrasive particles.   
     
     
         2 . The superabrasive blank of the  claim 1 , wherein the superabrasive particles are at least one of cubic boron nitride, diamond, and diamond composite materials. 
     
     
         3 . The superabrasive blank of the  claim 1 , wherein the surface modified superabrasive particles have a plurality of pits on the surface. 
     
     
         4 . The superabrasive blank of the  claim 1 , wherein the surface modified superabrasive particles have a plurality of spikes on the surface. 
     
     
         5 . The superabrasive blank of the  claim 1 , wherein the depth of the pits ranges in size from about 5% to about 70% of the longest length of the particle. 
     
     
         6 . The superabrasive blank of the  claim 1 , wherein the superabrasive particles have surface roughness less than about 0.89. 
     
     
         7 . A method of making superabrasive material, comprising:
 providing surface modified superabrasive particles, wherein the surface modified superabrasive particles have surface roughness less than about 0.89;   providing a substrate attached to a superabrasive volume formed by the plurality of superabrasive particles; and   subjecting the substrate and the superabrasive volume to conditions of elevated temperature and pressure suitable for producing the polycrystalline superabrasive material.   
     
     
         8 . The method of the  claim 7 , wherein the substrate is cemented tungsten carbide. 
     
     
         9 . The method of the  claim 7 , wherein the surface modified superabrasive particles have a plurality of pits on the surface. 
     
     
         10 . The method of the  claim 9 , wherein depth of the pits ranges in size from about 5% to about 70% of the longest length of the particle. 
     
     
         11 . The method of the  claim 7 , wherein the surface modified superabrasive particles have a plurality of spikes on the surface. 
     
     
         12 . The method of the  claim 7 , wherein the surface modified superabrasive particles have sphericity less than about 0.70. 
     
     
         13 . The method of the  claim 7 , wherein the superabrasive particles are at least one of cubic boron nitride, diamond, and diamond composite materials. 
     
     
         14 . A superabrasive blank, comprising:
 a plurality of polycrystalline superabrasive particles made of surface modified superabrasive particles, wherein the surface modified superabrasive particles have surface roughness less than about 0.89.   
     
     
         15 . The superabrasive blank of the  claim 14 , wherein the superabrasive particles are selected from a group of cubic boron nitride, diamond, and diamond composite materials. 
     
     
         16 . The superabrasive blank of the  claim 14 , wherein the surface modified superabrasive particles have a plurality of pits on the surface. 
     
     
         17 . The superabrasive blank of the  claim 14 , wherein the surface modified superabrasive particles have a plurality of spikes on the surface. 
     
     
         18 . The superabrasive blank of the  claim 14 , wherein the depth of the pits ranges in size from about 5% to about 70% of the longest length of the particle. 
     
     
         19 . The superabrasive blank of the  claim 14 , wherein the superabrasive particles have sphericity less than about 0.70. 
     
     
         20 . The superabrasive blank of the  claim 14 , further comprises a substrate attached to a superabrasive volume formed by the polycrystalline superabrasive particles.