- 专利标题: Methods of forming polycrystalline diamond
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申请号: US14291862申请日: 2014-05-30
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公开(公告)号: US09945185B2公开(公告)日: 2018-04-17
- 发明人: Marc W. Bird
- 申请人: Baker Hughes Incorporated
- 申请人地址: US TX Houston
- 专利权人: Baker Hughes Incorporated
- 当前专利权人: Baker Hughes Incorporated
- 当前专利权人地址: US TX Houston
- 代理机构: TraskBritt
- 主分类号: E21B10/567
- IPC分类号: E21B10/567 ; B24D18/00 ; B24D99/00 ; E21B10/55
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.