- 专利标题: METHOD OF MAKING SUPER-HARD ARTICLES
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申请号: US15327047申请日: 2015-07-10
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公开(公告)号: US20170144936A1公开(公告)日: 2017-05-25
- 发明人: Santonu Ghosh
- 申请人: Element Six (UK) Limited
- 申请人地址: GB Oxfordshire
- 专利权人: Element Six (UK) Limited
- 当前专利权人: Element Six (UK) Limited
- 当前专利权人地址: GB Oxfordshire
- 优先权: GB1412809.4 20140718
- 国际申请: PCT/EP2015/065869 WO 20150710
- 主分类号: C04B35/5831
- IPC分类号: C04B35/5831 ; C04B35/632 ; B28B3/02 ; C04B35/638 ; C04B35/626 ; C04B35/622 ; C04B35/64
摘要:
A method of making a super-hard article comprising a super-hard structure (14) bonded to a substrate (18), the super-hard structure comprising a sintered plurality of super-hard grains. The method includes providing raw material powder suitable for sintering the super-hard structure. The raw material powder is combined with organic binder material in a liquid medium to form paste. The content of the raw material powder is more than 60 and less than 85 mass per cent of the paste and the composition of the paste is such that it has a shear rate of at most 25 inverse second (s-1). A substrate assembly is provided, which comprises the substrate, having a formation surface area configured for forming a boundary of the super-hard structure, the substrate comprising a recess coterminous with the formation surface area. The paste is extruded into contact with the formation surface area to provide a paste assembly. The paste assembly is heat treated to remove the binder material and provide a pre-sinter assembly. The pre-sinter assembly is subjected to a pressure and temperature sufficient to sinter the raw material powder and transform it into the super-hard structure bonded to the substrate at a boundary coterminous with the formation surface area. The super-hard material is diamond or cubic boron nitride.
公开/授权文献
- US11261133B2 Method of making super-hard articles 公开/授权日:2022-03-01
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