Bulk nanostructured carbon phases prepared from C60:: approaching the 'ideal' hardness

被引：18

作者：

Brazhkin, Vadim V. ^{[1
]}

Solozhenko, Vladimir L.

Bugakov, Vasilii I.

Dub, Sergei N.

Kurakevych, Oleksandr O.

Kondrin, Mikhail V.

Lyapin, Alexander G.

机构：

[1] RAS, Inst High Pressure Phys, Troitsk 142190, Moscow Reg, Russia

[2] Univ Paris 13, LPMTM, CNRS, F-93430 Villetaneuse, France

[3] NAS Ukraine, Inst Superhard Mat, UA-04074 Kiev, Ukraine

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 23期

关键词：

D O I：

10.1088/0953-8984/19/23/236209

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

New nanomaterials have been prepared by high- temperature treatment of fullerite C-60 at moderate ( 0.1 - 1.5 GPa) pressures attainable for large- volume pressure apparatus. The structure, EELS spectra, Raman spectra, hardness and elastic moduli of these carbon substances have been studied. The materials have a high ( 90%) elastic recovery, fairly high hardness H similar to 10 - 15 GPa and record values of the hardness- to- Young- modulus ratio H/ E similar to 0.22. The observed hardness is close to the ` ideal' limit, which is associated with the nanostructure of the materials. This structure represents a combination of interlinked curved fragments of C-60 molecules and nanographite nuclei.

引用

页数：7

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