发明名称 |
Methods for making polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance |
摘要 |
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 mm or greater. At least a portion of the diamond body has a high diamond volume content of greater than about 93 percent by volume. The entire diamond body can comprise high volume content diamond or a region of the diamond body can comprise the high volume content diamond. The diamond body includes a working surface, a first region substantially free of the catalyst material, and a second region that includes the catalyst material. At least a portion of the first region extends from the working surface to depth of from about 0.01 to about 0.1 mm |
申请公布号 |
GB2455425(B) |
申请公布日期 |
2009.12.09 |
申请号 |
GB20080023390 |
申请日期 |
2006.05.26 |
申请人 |
SMITH INTERNATIONAL INC |
发明人 |
MADAPUSI K KESHAVAN;YOUHE ZHANG;YUELIN SHEN;ANTHONY GRIFFO;MICHAEL JANSSEN |
分类号 |
C01B31/06;E21B10/46 |
主分类号 |
C01B31/06 |
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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