ULTRAHARD AND SUPERHARD CARBON PHASES PRODUCED FROM C-60 BY HEATING AT HIGH-PRESSURE - STRUCTURAL AND RAMAN STUDIES

被引：153

作者：

BLANK, VD ^{[1
]}

BUGA, SG ^{[1
]}

SEREBRYANAYA, NR ^{[1
]}

DENISOV, VN ^{[1
]}

DUBITSKY, GA ^{[1
]}

IVLEV, AN ^{[1
]}

MAVRIN, BN ^{[1
]}

POPOV, MY ^{[1
]}

机构：

[1] SCI & TECH CTR SUPERHARD MAT,TROITSK 142092,RUSSIA

来源：

PHYSICS LETTERS A | 1995年 / 205卷 / 2-3期

关键词：

D O I：

10.1016/0375-9601(95)00564-J

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

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页码：208 / 216

页数：9

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