Physicochemical Transformations During Low-Temperature Synthesis of Zirconium Carbide

被引：2
|
作者：
Shishkin, R. A. [1 ]
Kudyakova, V. S. [1 ]
Zhirenkina, N. V. [1 ]
机构：
[1] Ural Fed Univ, Ekaterinburg, Russia
来源：
REFRACTORIES AND INDUSTRIAL CERAMICS | 2019年 / 60卷 / 01期
关键词：
joint reduction; magnesiothermy; zircon carbide ZrC; sodium carbonate Na2CO3; low-temperature synthesis; SOLID-STATE REACTION; SODIUM;
D O I：
10.1007/s11148-019-00317-x
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：
Joint reduction of zirconium dioxide and sodium carbonate to form zirconium carbide was studied. Magnesiothermic reduction of ZrO2 was shown to occur at 600 - 620 degrees C; Na2CO3, 590 - 610 degrees C. Thermodynamic calculations and x-ray phase analyses indicated the transformations occurring during the synthesis and the resulting reaction products. Use of graphite as the carbon source did not lead to ZrC formation at 700 - 900 degrees C, in contrast with Na2CO3.
引用
收藏
页码：105 / 108
页数：4
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