Synthesis of titanium nitride whiskers from hexafluorotitanates(IV)

被引：4

作者：

Kanawa, T ^{[1
]}

Sugimoto, A ^{[1
]}

Kaneko, Y ^{[1
]}

机构：

[1] RITSUMEIKAN UNIV, FAC ENGN SCI, DEPT CHEM, KUSATSU, SHIGA 52577, JAPAN

来源：

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 1997年 / 105卷 / 01期

关键词：

titanium nitride; whisker; sodium fluorotitanate (IV); vapor-solid mechanism; thermodynamic interpretation;

D O I：

10.2109/jcersj.105.11

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：

Titanium nitride [TiN] whiskers were formed on the outer surface of the graphite tube by heating sodium fluorotitanate (N) (Na2TiF6) at 1300 degrees C or higher in a stream of nitrogen gas. The shape of whiskers was observed by SEM. The cross section of mostly whiskers was square. It was assumed that these whiskers grew in the [100] direction by Vapor-Solid (VS) mechanism. The lattice constant of TiN obtained in this work was determined by XRD as 0.4243-0.4246 nm, which was larger than 0.4242 nm for that of stoichiometric TIN. This fact showed that TiN obtained in this study contained a trace of carbon. A thermodynamic interpretation of the formation of TiN is considered. It is found that the existence of C, NaF and Al2O3 in a stream of N-2 gas is necessary for the formation of TiN from Na2TiF6.

引用

页码：11 / 14

页数：4

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