公开(公告)号：US20210039950A1

公开(公告)日：2021-02-11

申请号：US16831327

申请日：2020-03-26

Applicant: YANSHAN UNIVERSITY

Inventor： Zhisheng Zhao ,  Kun Luo ,  Bing Liu ,  Wentao Hu ,  Lei Sun ,  Julong He ,  Dongli Yu ,  Yongjun Tian ,  Bo Xu ,  Zhongyuan Liu

IPC: C01B32/05 ,  B24D3/00 ,  H01L29/16

Abstract: The present disclosure belongs to the technical filed of new carbon materials and relates to a novel sp2-sp3 hybrid crystalline carbon named Gradia and its preparation process. A novel sp2-sp3 hybrid carbon named Gradia is synthesized using sp2 hybrid carbon as raw materials under high temperature and high pressure. The basic structural units of Gradia are composed of sp2 hybrid graphite-like structural units and sp3 hybrid diamond-like structural units. Gradia disclosed in the present disclosure is a class of new sp2-sp3 hybrid carbon allotrope, whose crystal structure can vary with the widths and/or crystallographic orientation relationships of internal sp2 and/or sp3 structural units.

公开(公告)号：US20150158727A1

公开(公告)日：2015-06-11

申请号：US14407017

申请日：2013-08-02

Applicant: YANSHAN UNIVERSITY

Inventor： Yongjun Tian ,  Dongli Yu ,  Bo Xu ,  Julong He ,  Zhongyuan Liu ,  Wentao Hu ,  Kun Luo ,  Yufei Gao ,  Zhisheng Zhao

IPC: C01B21/064 ,  B01J3/06

CPC classification number: C01B21/0648 ,  B01J3/062 ,  B01J2203/0645 ,  B01J2203/066 ,  B82Y30/00 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2004/02 ,  C01P2004/04 ,  C01P2004/64 ,  C04B35/5831 ,  C04B35/645 ,  C04B2235/52 ,  C04B2235/5409 ,  C04B2235/5454 ,  C04B2235/723 ,  C04B2235/781 ,  C04B2235/96

Abstract: 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.

Abstract translation: 本发明涉及一种超硬纳米结晶氮化硼体材料及其合成方法。 特别地，本发明公开了一种含有高密度双胞胎的纳米晶体立方氮化硼体材料及其合成方法，其中由纳米球形氮化硼体系由纳米球形氮化硼颗粒（优选尺寸为5-70nm）与洋葱 - 通过使用高温高压合成作为原料。 与现有技术相比，根据本发明获得的纳米结晶氮化硼体积具有比正常立方氮化硼单晶高得多的硬度。 纳米结晶氮化硼体积在精密和超精密加工，磨料，拉丝模，特殊光学以及其他领域的应用前景广阔。

公开(公告)号：US11708268B2

公开(公告)日：2023-07-25

申请号：US17039194

申请日：2020-09-30

Applicant: YANSHAN UNIVERSITY

Inventor： Zhisheng Zhao ,  Kun Luo ,  Lei Sun ,  Bing Liu ,  Wentao Hu ,  Julong He ,  Dongli Yu ,  Yongjun Tian ,  Bo Xu ,  Zhongyuan Liu

IPC: C01B21/064

CPC classification number: C01B21/0648 ,  C01P2002/01 ,  C01P2002/76 ,  C01P2002/77

Abstract: The present disclosure relates to a novel sp2-sp3 hybrid crystalline boron nitride and its preparation process. A novel sp2-sp3 hybrid crystalline boron nitride allotrope, named Gradia BN, is synthesized using sp2 or sp3 hybridized boron nitride as raw materials under high-temperature and high-pressure. The basic structural units of Gradia BN are composed of sp2 hybridized graphite-like structural units and sp3 hybridized diamond-like structural units. Gradia BN disclosed in the present disclosure is a class of new sp2-sp3 hybrid boron nitride allotrope, whose crystal structure can vary with the widths and/or crystallographic orientation relationships of internal sp2 and/or sp3 structural units, and may have variable physical properties.

公开(公告)号：US20210323822A1

公开(公告)日：2021-10-21

申请号：US17039194

申请日：2020-09-30

Applicant: YANSHAN UNIVERSITY

Inventor： Zhisheng Zhao ,  Kun Luo ,  Lei Sun ,  Bing Liu ,  Wentao Hu ,  Julong He ,  Dongli Yu ,  Yongjun Tian ,  Bo Xu ,  Zhongyuan Liu

IPC: C01B21/064

Abstract: The present disclosure relates to a novel sp2-sp3 hybrid crystalline boron nitride and its preparation process. A novel sp2-sp3 hybrid crystalline boron nitride allotrope, named Gradia BN, is synthesized using sp2 or sp3 hybridized boron nitride as raw materials under high-temperature and high-pressure. The basic structural units of Gradia BN are composed of sp2 hybridized graphite-like structural units and sp3 hybridized diamond-like structural units. Gradia BN disclosed in the present disclosure is a class of new sp2-sp3 hybrid boron nitride allotrope, whose crystal structure can vary with the widths and/or crystallographic orientation relationships of internal sp2 and/or sp3 structural units, and may have variable physical properties.

公开(公告)号：US20230159336A1

公开(公告)日：2023-05-25

申请号：US17847440

申请日：2022-06-23

Applicant: YANSHAN UNIVERSITY

Inventor： Zhisheng Zhao ,  Bing Liu ,  Zihe Li ,  Yingju Wu ,  Kun Luo ,  Lei Sun ,  Baozhong Li ,  Julong He ,  Dongli Yu ,  Zhongyuan Liu ,  Wentao Hu ,  Bo Xu ,  Yongjun Tian

IPC: C01B32/25 ,  C01B32/05

CPC classification number: C01B32/25 ,  C01B32/05 ,  C01P2002/02 ,  C01P2006/40

Abstract: The present application discloses a conductive high-strength diamond/amorphous carbon composite material and a preparation process thereof. The diamond/amorphous carbon composite material is composed of an amorphous carbon continuous phase and multiple separate diamond phases embedded in the amorphous carbon continuous phase, wherein the diamond phases exhibit an ordered sp3 hybrid state, and the amorphous carbon continuous phase exhibits a disordered sp2 hybrid state. The present application further discloses a process for preparing the above diamond/amorphous carbon composite material. The process comprises using sp3 carbon powder or glassy carbon as a raw material to obtain the above-mentioned material by sintering. The diamond/amorphous carbon composite material shows good electrical conductivity, good electrical discharge machining ability, good chemical stability and light weight, and has broad application prospects in aerospace, automobile industry and biomedical equipment.

公开(公告)号：US11634327B2

公开(公告)日：2023-04-25

申请号：US16831327

申请日：2020-03-26

Applicant: YANSHAN UNIVERSITY

Inventor： Zhisheng Zhao ,  Kun Luo ,  Bing Liu ,  Wentao Hu ,  Lei Sun ,  Julong He ,  Dongli Yu ,  Yongjun Tian ,  Bo Xu ,  Zhongyuan Liu

IPC: C01B32/05 ,  B24D3/00 ,  H01L29/16

Abstract: The present disclosure belongs to the technical filed of new carbon materials and relates to a novel sp2-sp3 hybrid crystalline carbon named Gradia and its preparation process. A novel sp2-sp3 hybrid carbon named Gradia is synthesized using sp2 hybrid carbon as raw materials under high temperature and high pressure. The basic structural units of Gradia are composed of sp2 hybrid graphite-like structural units and sp3 hybrid diamond-like structural units. Gradia disclosed in the present disclosure is a class of new sp2-sp3 hybrid carbon allotrope, whose crystal structure can vary with the widths and/or crystallographic orientation relationships of internal sp2 and/or sp3 structural units.

公开(公告)号：US09422161B2

公开(公告)日：2016-08-23

申请号：US14407017

申请日：2013-08-02

Applicant: YANSHAN UNIVERSITY

Inventor： Yongjun Tian ,  Dongli Yu ,  Bo Xu ,  Julong He ,  Zhongyuan Liu ,  Wentao Hu ,  Kun Luo ,  Yufei Gao ,  Zhisheng Zhao

IPC: B01J3/06 ,  B82Y30/00 ,  C01B21/064 ,  C04B35/645 ,  C04B35/5831

CPC classification number: C01B21/0648 ,  B01J3/062 ,  B01J2203/0645 ,  B01J2203/066 ,  B82Y30/00 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2004/02 ,  C01P2004/04 ,  C01P2004/64 ,  C04B35/5831 ,  C04B35/645 ,  C04B2235/52 ,  C04B2235/5409 ,  C04B2235/5454 ,  C04B2235/723 ,  C04B2235/781 ,  C04B2235/96

Abstract: 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.

Abstract translation: 本发明涉及一种超硬纳米结晶氮化硼体材料及其合成方法。 特别地，本发明公开了一种含有高密度双胞胎的纳米晶体立方氮化硼体材料及其合成方法，其中由纳米球形氮化硼体系由纳米球形氮化硼颗粒（优选尺寸为5-70nm）与洋葱 - 通过使用高温高压合成作为原料。 与现有技术相比，根据本发明获得的纳米结晶氮化硼体积具有比正常立方氮化硼单晶高得多的硬度。 纳米结晶氮化硼体积在精密和超精密加工，磨料，拉丝模，特殊光学以及其他领域的应用前景广阔。