A simple and efficient route to synthesize hafnium carbide nanowires by catalytic pyrolysis of a polymer precursor

被引：18

作者：

Li, Jinhua ^{[1
]}

Zhang, Yulei ^{[2
]}

Fu, Yanqin ^{[2
]}

Fei, Tian ^{[2
]}

Xi, Zengzhe ^{[1
]}

机构：

[1] Xian Technol Univ, Sch Mat & Chem Engn, Xian 710032, Shaanxi, Peoples R China

[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 11期

基金：

美国国家科学基金会;

关键词：

HfC nanowires; Catalyst-assisted; Pyrolysis of polymeric precursors; SLS mechanism; SILICON-NITRIDE NANOWIRES; IN-SITU SYNTHESIS; SIC NANOWIRES; OXIDATION RESISTANCE; CARBON NANOTUBES; GROWTH; COMPOSITES; WHISKERS; ENHANCEMENT; MORPHOLOGY;

D O I：

10.1016/j.ceramint.2018.04.165

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

One-dimensional hafnium carbide (HfC) nanowires were synthesized on carbon fiber by catalyst-assisted pyrolysis of organometallic polymer precursor. The effects of the pyrolysis temperature and the concentration of catalyst on the formation and morphologies of HfC nanowires were investigated, the growth mechanism was explained by thermodynamic calculation. The results show that the diameter of HfC nanowires increases with the pyrolysis temperature increasing; the yield of HfC nanowires was increased by increasing the concentrations of catalyst. The obtained nanowires were randomly oriented around the carbon fibers with the diameters of 50-200 nm and the length of several micrometers, and the product has perfect single crystalline structure. The growth mechanism of the as-prepared HfC nanowires can be explained by solid-liquid-solid (SLS) mechanism.

引用

页码：13335 / 13340

页数：6

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