Carbothermal reduction synthesis of near-stoichiometric ZrC whiskers via V-L-S and S-L-S growth mechanism

被引：9

作者：

Cheng, Shuo ^{[1
]}

Cheng, Laifei ^{[1
]}

Ye, Fang ^{[1
]}

Zhao, Kai ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Xian, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 17期

基金：

美国国家科学基金会;

关键词：

ZrC whiskers; Carbothermal reduction process; Vapor-liquid-solid and solid-liquid-solid growth mechanisms; ZIRCONIUM CARBIDE WHISKERS; SIC WHISKER; RICE HUSK; SILICON; MIXTURE;

D O I：

10.1016/j.ceramint.2020.07.234

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：

Near-stoichiometric zirconi um carbide (ZrC) whiskers, which were efficiently synthesized from the mixture of ZrO2, C, Ni and NaF by carbothermal reduction at 1500 degrees C in Ar atmosphere, are about 1 mu m in diameter and 30-50 mu m in length with smooth surfaces. Near-stoichiometric ZrC whiskers were prepared by regulating the concentration of precursors (carbon black, catalyst Ni), subsequently vapor-liquid-solid (V-L-S) and solid-liquid-solid (S-L-S) growth mechanisms of ZrC whiskers were clearly revealed and related models were established.

引用

页码：27463 / 27468

页数：6

共 20 条

[1] Selection, processing, properties and applications of ultra-high temperature ceramic matrix composites, UHTCMCs - a review [J].