PCD materials comprise a diamond body having bonded diamond crystals and interstitial regions disposed among the crystals. The diamond body is formed from diamond grains and a catalyst material at high pressure/high temperature conditions. The diamond grains have an average particle size of about 0.03...http://www.google.com.au/patents/US20060266559?utm_source=gb-gplus-sharePatent US20060266559 - Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance
