发明名称 |
POLYCRYSTALLINE DIAMOND COMPOSITES |
摘要 |
<p>Polycrystalline diamond composites comprise a polycrystalline diamond body having a plurality of ultra-hard discrete regions dispersed within a polycrystalline diamond second region. The plurality of discrete regions has an density different from of the polycrystalline diamond second region. A metallic substrate can be joined to the body. The discrete regions can be relatively more thermal stable than, have a higher diamond density than, and/or may comprise a binder material that is different from the polycrystalline diamond second region. Polycrystalline diamond composites can be formed by combining already sintered granules with diamond grains to form a mixture, and subjecting the mixture to high pressure/high temperature conditions, wherein the granules form the plurality of discrete regions, or can be made by forming a plurality of unsintered granules, combining them with diamond grains to form a mixture, and then subjecting the mixture to first and second high pressure/high temperature conditions.</p> |
申请公布号 |
CA2603693(C) |
申请公布日期 |
2015.03.03 |
申请号 |
CA20072603693 |
申请日期 |
2007.09.21 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
SHEN, YUELIN;ZHANG, YOUHE;HUANG, SUJIAN;KESHAVAN, MADAPUSI K. |
分类号 |
C30B33/06;C01B31/06;C30B31/02;E21B10/46 |
主分类号 |
C30B33/06 |
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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