Structure and properties of superelastic hard carbon phase created in fullerene-metal composites by high temperature-high pressure treatment

被引：19

作者：

Chernogorova, O. ^{[1
]}

Drozdova, E. ^{[1
]}

Ovchinnikova, I. ^{[1
]}

Soldatov, A. V. ^{[2
,4
]}

Ekimov, E. ^{[3
]}

机构：

[1] Russian Acad Sci, Baikov Inst Met & Mat Sci IMET, Moscow 119991, Russia

[2] Lulea Univ Technol, Dept Engn Sci & Math, SE-97187 Lulea, Sweden

[3] RAS, Vereshchagin Inst High Pressure Phys, Troitsk, Moscow Region, Russia

[4] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2012年 / 111卷 / 11期

关键词：

C-60; SUPERHARD;

D O I：

10.1063/1.4726155

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Treatment of a fullerene soot extract and metal (Co) powder mixture under pressure of 5 and 8 GPa at 1000 degrees C leads to the transformation of fullerites into superelastic hard phase (SHP) and to simultaneous sintering of the powder mixture to nonporous composite material reinforced by the SHP particles. The structure of the SHP particles reveals a topological relation to the initial fullerite crystal morphology. Upon indentation, the SHP particles demonstrate an elastic recovery of up to 96%. The universal microhardness of the SHP particles HU = 26 GPa, and their microhardness HV = 35 GPa. A high ratio between the microhardness and elastic modulus (HV/E = 0.19-0.21) of the SHP particles makes them perspective candidates for design of materials with superior wear resistance and tribological properties. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4726155]

引用

页数：5

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