Synthesis of new Diamond-like B-C Phases under High Pressure and Temperatures

Ming, L. C.¹  Zinin, P. V.¹  Sharma, S. K.¹ 

[1] University of Hawaii

关键词: High-pressure synthesis;    BCx;    Cubic BC3;    laser-heated diamond anvil cell;    Raman spectroscopy;    TEM;    EELS;    Laser ultrasonic;    XRD;    Electron diffraction;   

DOI  :  10.2172/1129049
RP-ID  :  Final Report
PID  :  OSTI ID: 1129049

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

A cubic BC3 (c-BC3) phase was synthesized by direct transformation from graphitic phases at a pressure of 39 GPa and temperature of 2200 K in a laser-heated diamond anvil cell (DAC). A combination of x-ray diffraction (XRD), electron diffraction (ED), transmission electron microscopy (TEM) imaging, and electron energy loss spectroscopy (EELS) measurements lead us to conclude that the obtained phase is hetero-nano-diamond, c-BC3. The EELS measurements show that the atoms inside the cubic structure are bonded by sp3 bonds.