发明名称 |
METHODS OF FORMING POLYCRYSTALLINE DIAMOND AND CUTTING ELEMENTS AND TOOLS COMPRISING POLYCRYSTALLINE DIAMOND |
摘要 |
A method of forming polycrystalline diamond includes encapsulating diamond particles, carbon monoxide, and carbon dioxide in a container. The encapsulated diamond particles, carbon monoxide, and carbon dioxide are subjected to a pressure of at least 4.5 GPa and a temperature of at least 1400° C. to form inter-granular bonds between the diamond particles. A cutting element includes polycrystalline diamond material comprising inter-bonded grains of diamond. The polycrystalline diamond material is substantially free of graphitic carbon and metallic compounds. The polycrystalline diamond material exhibits a density of at least about 3.49 g/cm3 and a modulus of at least about 1000 GPa. An earth-boring tool may include such a cutting element secured to a body. |
申请公布号 |
US2015345229(A1) |
申请公布日期 |
2015.12.03 |
申请号 |
US201414291862 |
申请日期 |
2014.05.30 |
申请人 |
Baker Hughes Incorporated |
发明人 |
Bird Marc W. |
分类号 |
E21B10/567;B24D99/00;E21B10/55;B24D18/00 |
主分类号 |
E21B10/567 |
代理机构 |
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代理人 |
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主权项 |
1. A method of forming polycrystalline diamond, comprising:
encapsulating diamond particles, carbon monoxide, and carbon dioxide in a container; and subjecting the encapsulated diamond particles, carbon monoxide, and carbon dioxide to a pressure of at least 4.5 GPa and a temperature of at least 1400° C. to form inter-granular bonds between the diamond particles. |
地址 |
Houston TX US |