ULTRAHARD AND SUPERHARD CARBON PHASES PRODUCED FROM C-60 BY HEATING AT HIGH-PRESSURE - STRUCTURAL AND RAMAN STUDIES
ULTRAHARD AND SUPERHARD CARBON PHASES PRODUCED FROM C-60 BY HEATING AT HIGH-PRESSURE - STRUCTURAL AND RAMAN STUDIES
复制标题
DOI：
10.1016/0375-9601(95)00564-j
复制
发表时间：
1995-09-11
影响因子：
2.6
通讯作者：
POPOV, MY
中科院分区：
文献类型：
--
作者：
BLANK, VD;BUGA, SG;POPOV, MY
研究了富勒石样品在9.5和13 Gpa非静水压力下经1830K热处理后的X射线衍射谱、拉曼光谱、硬度等物理性能。在620-1830K温度范围内，从C-60中获得了超硬和超硬碳，材料的硬度超过了金刚石。X射线和拉曼光谱测量表明，在超硬和超硬状态下，富勒烯分子和晶体结构都保持不变，但在高温下，无序度逐渐增加，形成了无规的连接分子网络。
Investigations of X-ray diffraction patterns, Raman spectra, hardness and other physical properties were carried out for fullerite after a heat treatment up to 1830 K at 9.5 and 13 GPa nonhydrostatic pressure of bulk samples. Both superhard and ultrahard forms of carbon have been obtained from C-60 at 620-1830 K. The hardness of the materials exceeded that of diamond. The X-ray and Raman measurements have shown that both crystal structures and fullerene molecules were retained in superhard and ultrahard states, but a gradual increase of disorder occurred and a random network of linked molecules at high temperatures was formed.