六角相B-C-N化合物的高压相变研究

杨洁; 李明; 林鹏; 于栋力; 何巨龙

doi:10.11858/gywlxb.2011.02.005

六角相B-C-N化合物的高压相变研究

doi: 10.11858/gywlxb.2011.02.005

杨洁^1,4,,
李明^1,2,
林鹏¹,
于栋力³,
何巨龙³

1.
吉林大学超硬材料国家重点实验室，吉林长春 130012；
2.
河南理工大学物理化学学院，河南焦作 454000；
3.
燕山大学亚稳材料制备技术与科学国家重点实验室，河北秦皇岛 066004；
4.
空军航空大学基础部，吉林长春 130012

详细信息

通讯作者:
杨洁

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出版历程
- 收稿日期: 2010-03-22
- 修回日期: 2010-07-05
- 刊出日期: 2011-04-15

Study on High-Pressure Phase Transition of Hexagonal B-C-N Compound

YANG Jie^{1,4
,},
LI Ming^1,2,
LIN Peng¹,
YU Dong-Li³,
HE Ju-Long³

1.
State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
2.
Department of Physics and Chemistry, Henan Polytechnic University, Jiaozuo 454000, China;
3.
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;
4.
Fundamental Department, Aviation University of Air Force, Changchun 130012, China

More Information

Corresponding author: YANG Jie

摘要

摘要: 采用原位高压同步辐射能散X射线衍射和金刚石压砧技术，实验研究了新型超硬材料六角相B0.47C0.23N0.30的高压相变及物理特性，压力范围为1.4~30 GPa。实验结果表明，六角相B0.47C0.23N0.30在14.9 GPa压力下发生了相变，形成的新相为六方纤锌矿结构。计算得到了具有六方纤锌矿结构的B0.47C0.23N0.30的晶格常数、晶胞体积随压力的变化关系，并与六角相B0.47C0.23N0.30进行了对比分析。根据布里奇曼方程，计算得到了具有六方纤锌矿结构的B0.47C0.23N0.30的体模量K0=(27526)GPa，非常接近立方相BC2N的体模量(28215)GPa。
- 高压 /
- 相变 /
- 压缩率
Abstract: Using in situ high-pressure synchrotron X-ray diffraction and diamond anvil cell (DAC) techniques, the phase transition and physical characteristics of B0.47C0.23N0.30 compound were observed in the pressure range of 1.4~30 GPa. The experimental results showed that the B-C-N compound experiences a phase transition from hexagonal structure to wurtzite phase at 14.9 GPa. The pressure dependences of the lattice parameters and volume of wurtzite-type B-C-N were calculated. By fitting the Brich-Murnaghan equation of state to the pressure-volume data, the bulk modulus of wurtzite-type B-C-N compound was obtained as (27526)GPa, which is very close to the value of (28215)GPa for the cubic BC2N.
- high pressure /
- phase transition /
- compressibility

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参考文献(12)

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