Synthesis of silicon carbide nanowires by CVD without using a metallic catalyst

被引:81
作者
Fu, Qian-Gang [1 ]
Li, He-Jun [1 ]
Shi, Xiao-Hong [1 ]
Li, Ke-Zhi [1 ]
Wei, Jian [1 ]
Hu, Zhi-Biao [1 ]
机构
[1] Northwestern Polytech Univ, CC Composites Res Ctr, Lab Superhigh Temp Composites, Xian 710072, Shaanxi, Peoples R China
基金
中国国家自然科学基金;
关键词
chemical vapor deposition (CVD); nanostructure; crystal growth;
D O I
10.1016/j.matchemphys.2005.12.014
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Using CH3SiCl3 (NITS) and H as the precursors, large quantities of SiC nanowires with homogeneous diameter have been fabricated by a simple chemical vapor deposition process without using a metallic catalyst. The as-grown SiC nanowires were identified by TEM and XRD as single crystal beta-SiC structure, with diameters of about 70 nm. As the increasing of deposition temperature, or as the decreasing of H-2/MTS mol ratio, the SiC crystal dimensions increase and the morphologies of the as-grown SiC crystal change from nanowires to grains. beta-SiC coaxial nanocables with a amorphous wrapping layer have also been obtained by the oxidation of SiC nanowires. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:108 / 111
页数:4
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