- 专利标题： CUBIC BORON NITRIDE POLYCRYSTAL, CUTTING TOOL, WEAR RESISTANT TOOL, GRINDING TOOL, AND METHOD FOR PRODUCING CUBIC BORON NITRIDE POLYCRYSTAL
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申请号： EP16748973申请日： 2016-01-18
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公开(公告)号： EP3257829A4公开(公告)日： 2018-07-25
- 发明人: ISHIDA YUH , ARIMOTO KEIKO , YAMAMOTO KATSUKO , SUMIYA HITOSHI
- 申请人： SUMITOMO ELECTRIC INDUSTRIES
- 专利权人： SUMITOMO ELECTRIC INDUSTRIES
- 当前专利权人： SUMITOMO ELECTRIC INDUSTRIES
- 优先权： JP2015023244 2015-02-09
- 主分类号： C04B35/583
- IPC分类号： C04B35/583 ; B23B27/14 ; B23B27/20 ; B23B51/00 ; B23C5/16 ; C04B35/645
摘要：
A cubic boron nitride polycrystal includes cubic boron nitride, the cubic boron nitride having an average grain size of not more than 150 nm, the cubic boron nitride polycrystal having a crack generation load of not less than 25 N in a breaking strength test in which an R200µm diamond indenter is used to apply a load at a rate of 100 N/min.
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