Structure and phase composition of a catalyst for carbon nanotiber formation

被引：13

作者：

Blank, V. D.

Alshevskiy, Yu. L.

Zaitsev, A. I.

Kazennov, N. V.

Perezhogin, I. A.

Kulnitskiy, B. A.

机构：

[1] TISNCM, Troitsk 142190, Moscow Region, Russia

[2] IP Bardin Cent Ferrous Met Res Inst, FSTUE, Moscow 105005, Russia

来源：

SCRIPTA MATERIALIA | 2006年 / 55卷 / 11期

关键词：

carbon; graphite; carbides; high resolution electron microscopy (HREM); twinning;

D O I：

10.1016/j.scriptamat.2006.08.007

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Novel carbon nanofibers (CNFs) consisting of graphite layers crossed by two systems of stripes are formed on an iron catalyst using the chemical vapor deposition method under conditions close to the phase equilibrium of the iron carbides Fe3C and Fe5C2. The formation of these CNFs is explained by the deformation caused by the decay of the carbides. It is shown that the catalyst particle, often twinned, consists of Fe3C, Fe5C2 or both. The crystallographic peculiarities of alpha-Fe -> Fe3C Fe5C2 transformation are discussed. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1035 / 1038

页数：4

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