发明名称 |
Ultrahard Nanotwinned Boron Nitride Bulk Materials and Synthetic Method Thereof |
摘要 |
The invention relates to an ultrahard nanotwinned boron nitride bulk material and synthetic method thereof. Particularly, the invention discloses a nanocrystalline cubic boron nitride bulk material containing high density of twins and synthetic method thereof, in which a nanotwinned boron nitride bulk are synthesized from nanospherical boron nitride particles (preferably with a size of 5-70 nm) with onion-like structure as raw materials by using high temperature and high pressure synthesis. As compared with the prior arts, the nanotwinned boron nitride bulk obtained according to the invention has a much higher hardness than that of a normal cubic boron nitride single crystal. The nanotwinned boron nitride bulk has great prospects in applications, such as precision and ultra-precision machining, abrasives, drawing dies, and special optics as well as other fields. |
申请公布号 |
EP2879990(A4) |
申请公布日期 |
2016.04.20 |
申请号 |
EP20130825107 |
申请日期 |
2013.08.02 |
申请人 |
YANSHAN UNIVERSITY |
发明人 |
TIAN, YONGJUN;YU, DONGLI;XU, BO;HE, JULONG;LIU, ZHONGYUAN;HU, WENTAO;LUO, KUN;GAO, YUFEI;ZHAO, ZHISHENG |
分类号 |
C01B21/064;C04B35/5831;C04B35/645 |
主分类号 |
C01B21/064 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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