发明名称 |
Polycrystalline Diamond Composite Construction Comprising Thermally Stable Diamond Volume |
摘要 |
<p>PCD composite constructions comprise a diamond body bonded to a substrate. The diamond body comprises a thermally stable diamond bonded region that is made up of a single phase of diamond crystals bonded together. The diamond body includes a PCD region bonded to the thermally stable region and that comprises bonded together diamond crystals and intcrstitial regions interposed between the diamond crystals. The PCD composite is prepared by combining a first volume of PCD with a second volume of diamond crystal-containing material consisting essentially of a single phase of bonded together diamond crystals. A substrate is positioned adjacent to or joined to the first volume. The first and second volumes are subjected to high pressure/high temperature process conditions, during process the first and second volumes form a diamond bonded body that is attached to the substrate, and the second volume forms the thermally stable diamond bonded region.</p> |
申请公布号 |
EP1760165(A2) |
申请公布日期 |
2007.03.07 |
申请号 |
EP20060118267 |
申请日期 |
2006.08.01 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
MIDDLEMISS, STEWART |
分类号 |
C22C26/00;B22F7/06;B24D3/06;E21B10/56 |
主分类号 |
C22C26/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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