HRTEM studies of cobalt-filled carbon nanotubes

被引：9

作者：

Blank, V. D. ^{[1
]}

Kulnitskiy, B. A. ^{[1
]}

Perezhogin, I. A. ^{[1
]}

Polyakov, E. V. ^{[1
]}

Batov, D. V. ^{[1
]}

机构：

[1] Technol Inst Superhard & Novel Carbon Mat TISNCM, Troitsk 142190, Moscow Region, Russia

来源：

ACTA MATERIALIA | 2010年 / 58卷 / 04期

关键词：

Transmission electron microscopy; Carbon; Graphite; Nanocrystalline materials; Deformation structure; PRESSURE; TRANSFORMATION; CAPILLARITY; DEFORMATION; NITROGEN; GROWTH;

D O I：

10.1016/j.actamat.2009.10.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cobalt-filled carbon nanotubes were synthesized at high temperature and high gas pressure. A high-resolution transmission electron microscopy study demonstrates that the product of the synthesis contains cylindrical carbon nanotubes whose cores are filled with cobalt nanoparticles or nanorods. It is shown that cobalt appears inside the nanotubes in three basic modifications: face-centered cubic (fcc) lattice, hexagonal close-packed (hcp) lattice and disordered polytypic structure. The fee lattice is often twinned, with two or more non-parallel twinning planes being observed. The orientations of the fcc and hcp cobalt particles with respect to the nanotubes were investigated. The authors believe that the variety of cobalt modifications inside the nanotubes is due to the process of segregation of the closely packed structures from the melt. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1293 / 1298

页数：6

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