发明授权
- 专利标题： Ultra hard/hard composite materials
- 专利标题（中）： 超硬/硬复合材料
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申请号： US13141042申请日： 2009-12-18
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公开(公告)号： US08789626B2公开(公告)日： 2014-07-29
- 发明人: Antionette Can , Geoffrey John Davies , Johannes Lodewikus Myburgh
- 申请人： Antionette Can , Geoffrey John Davies , Johannes Lodewikus Myburgh
- 代理机构： Bryan Cave LLP
- 优先权： GB0823328.0 20081222
- 国际申请： PCT/IB2009/055836 WO 20091218
- 国际公布： WO2010/073198 WO 20100701
- 主分类号： E21B10/46
- IPC分类号： E21B10/46
摘要：
The invention provides for an ultra hard or hard composite material comprising a primary ultra hard or hard particulate material and at least one secondary ultra hard or hard particulate material dispersed in a matrix material. The primary ultra hard or hard particulate material has a thermal expansion coefficient lower than that of the matrix material and the at least one secondary ultra hard or hard particulate material has a thermal expansion coefficient greater than that of the matrix material.
公开/授权文献
- US20110297450A1 ULTRA HARD/HARD COMPOSITE MATERIALS 公开/授权日：2011-12-08
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