发明名称 Polycrystalline diamond constructions having improved thermal stability
摘要 Polycrystalline diamond (PCD) constructions include a PCD body comprising a polycrystalline matrix region, a first region that includes a replacement material positioned remote from a body surface, and a second region that is substantially free of the replacement material and that extends a depth from the body surface. The PCD construction can further include a substrate that is attached to the body. The PCD body is formed by removing a solvent catalyst material used to form the body, replacing the removed solvent catalyst material with a replacement material, and then removing the replacement material from a region of the body to thereby form the second region. The replacement material can be introduced into the PCD body during a HPHT process, and the substrate may or may not be the source of the noncatalyzing material. <Figure 4>
申请公布号 IE86199(B1) 申请公布日期 2013.06.05
申请号 IE20080000214 申请日期 2008.03.20
申请人 SMITH INTERNATIONAL, INC. 发明人 RONALD K. EYRE;ANTHONY GRIFFO;PETER THOMAS CARIVEAU;MADAPUSI K. KESHAVAN
分类号 C04B41/88;C04B41/91;E21B10/46 主分类号 C04B41/88
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