发明名称 |
Highly wear resistant diamond insert with improved transition structure |
摘要 |
An insert for a drill bit may include a metallic carbide body; an outer layer of polycrystalline diamond material on the outermost end of the insert, the polycrystalline diamond material comprising a plurality of interconnected first diamond grains and a first binder material in interstitial regions between the interconnected first diamond grains; and at least one transition layer between the metallic carbide body and the outer layer, the at least one transition layer comprising a composite of second diamond grains, first metal carbide particles, and a second binder material, wherein the second diamond grains have a larger grain size than the first diamond grains. |
申请公布号 |
AU2010279295(A1) |
申请公布日期 |
2012.03.01 |
申请号 |
AU20100279295 |
申请日期 |
2010.08.06 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
MOURIK, NEPHI A.;CARIVEAU, PETER T.;BELLIN, FEDERICO;FANG, YI |
分类号 |
E21B10/56;E21B10/08;E21B10/36;E21B10/46;E21B10/48;E21B10/50 |
主分类号 |
E21B10/56 |
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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