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CN106457398A 形成聚晶金刚石的方法以及包括聚晶金刚石的切削元件和工具 有权

  • Patent Title: 形成聚晶金刚石的方法以及包括聚晶金刚石的切削元件和工具
  • Patent Title (English): Methods of forming polycrystalline diamond and cutting elements and tools comprising polycrystalline diamond
  • Application No.: CN201580028873.6
    Application Date: 2015-05-29
  • Publication No.: CN106457398A
    Publication Date: 2017-02-22
  • Inventor: M·W·伯德
  • Applicant: 贝克休斯公司
  • Applicant Address: 美国得克萨斯
  • Assignee: 贝克休斯公司
  • Current Assignee: 贝克休斯公司
  • Current Assignee Address: 美国得克萨斯
  • Agency: 中国国际贸易促进委员会专利商标事务所
  • Agent 秦振
  • Priority: 14/291862 2014.05.30 US
  • International Application: PCT/US2015/033223 2015.05.29
  • International Announcement: WO2015/184285 EN 2015.12.03
  • Date entered country: 2016-11-30
  • Main IPC: B22F3/12
  • IPC: B22F3/12 ;  B22F7/06 ;  E21B10/42
形成聚晶金刚石的方法以及包括聚晶金刚石的切削元件和工具
Abstract:
一种形成聚晶金刚石的方法包括将金刚石颗粒、一氧化碳和二氧化碳包封在容器中。使包封的金刚石颗粒、一氧化碳和二氧化碳经受至少4.5GPa的压力和至少1400℃的温度，以在金刚石颗粒之间形成晶间键。切削元件包括聚晶金刚石材料，所述聚晶金刚石材料包括相互键合的金刚石晶粒。聚晶金刚石材料基本上不含石墨碳和金属化合物。聚晶金刚石材料展示出至少约3.49g/cm3的密度和至少约1000GPa的模量。钻地工具可以包括这样一种固定到主体上的切削元件。
Abstract(English):

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 DEG 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.

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