发明名称 |
POLYCRYSTALLINE COMPACTS INCLUDING GRAINS OF HARD MATERIAL, EARTH BORING TOOLS INCLUDING SUCH COMPACTS, AND METHODS OF FORMING SUCH COMPACTS AND TOOLS |
摘要 |
<p>Polycrystalline compacts include a polycrystalline superabrasive material comprising a first plurality of grains of superabrasive material having a first average grain size and a second plurality of grains of superabrasive material having a second average grain size smaller than the first average grain size. The first plurality of grains is dispersed within a substantially continuous matrix of the second plurality of grains. Earth-boring tools may include a body and at least one polycrystalline compact attached thereto. Methods of forming polycrystalline compacts may include coating relatively larger grains of superabrasive material with relatively smaller grains of superabrasive material, forming a green structure comprising the coated grains, and sintering the green structure. Other methods include mixing diamond grains with a catalyst and subjecting the mixture to a pressure greater than about five gigapascals (5.0 GPa) and a temperature greater than about 1,300° C. to form a polycrystalline diamond compact.</p> |
申请公布号 |
EP2766554(A1) |
申请公布日期 |
2014.08.20 |
申请号 |
EP20120840811 |
申请日期 |
2012.10.12 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
SCOTT, DAN E.;DIGIOVANNI, ANTHONY A.;AGRAVAL, GAURAV;CHAKRABORTY, SOMA |
分类号 |
E21B10/46;B01J3/06;B24D3/10;C01B31/06 |
主分类号 |
E21B10/46 |
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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