Modification of diamond feeds for improving polycrystalline diamond cutter

Abstract

A superabrasive compact and a method of making the superabrasive compact are disclosed. A superabrasive compact may comprise a superabrasive volume and a substrate. The substrate may be attached to the superabrasive volume via an interface. The superabrasive volume may be formed by a plurality of polycrystalline superabrasive particles. The superabrasive particles may have nano or sub-micron scale surface texture.

1 . A superabrasive compact, comprising:
 a plurality of milled diamond polycrystalline superabrasive particles formed into a superabrasive volume, the plurality of milled diamond particles having nano or sub-micron scale surface texture prior to formation of the superabrasive volume, the plurality of milled diamond particles being treated at a pre-determined temperature and a pre-set atmosphere to introduce the nano or sub-micron scale surface texture to the exterior surfaces of the milled diamond particles; and   a substrate attached to the superabrasive volume formed by the polycrystalline superabrasive particles via along an interface.   
     
     
         2 . The superabrasive compact of the  claim 1 , wherein the interface on the substrate has an uneven interface. 
     
     
         3 . The superabrasive compact of the  claim 1 , wherein the surface texture is irregular fluctuant. 
     
     
         4 . The superabrasive compact of the  claim 1 , wherein the surface texture comprises at least one of peaks, valleys, channels, concave indentations, pits, or half-ellipsoids. 
     
     
         5 . The superabrasive compact of the  claim 1 , wherein the surface texture comprises at least a pattern comprising one of blisters, dots, bumps, or fish scales. 
     
     
         6 . The superabrasive compact of the  claim 1 , wherein the superabrasive particles comprise at least one of diamond, cubic boron nitride, diamond composite materials. 
     
     
         7 . (canceled) 
     
     
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         13 . (canceled) 
     
     
         14 . (canceled) 
     
     
         15 . (canceled) 
     
     
         16 . (canceled) 
     
     
         17 . A superabrasive compact, comprising:
 a plurality of polycrystalline superabrasive particles having nano-scale or sub-micron surface texture, wherein the surface texture comprises at least of one of peaks, valleys, channels, concave indentations, pits and half-ellipsoids.   
     
     
         18 . The superabrasive compact of the  claim 17 , wherein the superabrasive particles are selected from a group of cubic boron nitride, diamond, and diamond composite materials. 
     
     
         19 . The superabrasive compact of the  claim 17 , wherein the surface texture comprises at least a pattern comprising one of blisters, dots, bumps, or fish scales. 
     
     
         20 . The superabrasive compact of the  claim 17  further comprises a substrate attached to a superabrasive volume formed by the polycrystalline superabrasive particles. 
     
     
         21 . The superabrasive compact of the  claim 20 , wherein the substrate is cemented tungsten carbide. 
     
     
         22 . The superabrasive compact of the  claim 20 , wherein the substrate has at least two layers with a first layer having an amount of catalyst less than a second layer. 
     
     
         23 . The superabrasive compact of the  claim 22 , wherein the catalyst is an iron group transitional metal.