Autowave synthesis of cast binary silicides of molybdenum, tungsten, niobium, and titanium from thermite mixtures

被引：1
|
作者：
Gorshkov, V. A. [1 ]
Miloserdov, P. A. [1 ]
Yukhvid, V. I. [1 ]
机构：
[1] Russian Acad Sci, Inst Struct Macrokinet & Mat Sci, Moscow 142432, Russia
来源：
COMBUSTION EXPLOSION AND SHOCK WAVES | 2014年 / 50卷 / 05期
基金：
俄罗斯基础研究基金会;
关键词：
combustion; thermite mixture; gas pressure; temperature and rate of combustion; melting; phase separation; cast silicides;
D O I：
10.1134/S0010508214050050
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The processes of combustion and phase separation in thermite SHS systems in the synthesis of cast composite materials based on the silicides of molybdenum, tungsten, niobium, and titanium in a wide range of ratios between them have been studied. Thermodynamic calculations for the hot MoO3/2Al/2Si and WO3/2Al/2Si systems have shown that the pressure has a the strong effect on the combustion temperature and yield of gaseous products, and for the cold 3Nb(2)O(5)/10Al/12Si and 3TiO(2)/4Al/6Si systems, this effect has not been found. The effect of the ratio of the initial reagents and the activating high-temperature additive (CaO2 + Al) on the combustion and phase-separation parameters have been studied experimentally.
引用
收藏
页码：527 / 531
页数：5
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