放热反应
燃烧
冲击波
点火系统
材料科学
绝热过程
自燃温度
氩
热的
化学工程
热力学
复合材料
化学
物理化学
有机化学
物理
工程类
作者
I. V. Saikov,S. A. Seropyan,А. Yu. Malakhov,G. R. Saikova,И. В. Денисов,Е. В. Петров
出处
期刊:Metals
[MDPI AG]
日期:2021-08-29
卷期号:11 (9): 1355-1355
被引量:8
摘要
The parameters of combustion synthesis and shock-wave initiation of reactive W/PTFE/Al compacts are investigated. Preliminary thermodynamic calculations showed the possibility of combustion of the W/PTFE/Al system at high adiabatic temperatures (up to 2776 °C) and a large proportion of condensed combustion products. The effect of the Al content (5, 10, 20, and 30 wt%) in the W/PTFE/Al system on the ignition and development of exothermic reactions was determined. Ignition temperatures and combustion rates were measured in argon, air, and rarefied air. A correlation between the gas medium, rate, and temperature of combustion was found. The shock initiation in W/PTFE/Al compacts with different Al content was examined. The extent of reaction in all compacts was studied by X-ray diffraction. The compositions with 10 and 20 wt% Al showed the highest completeness of synthesis after combustion and shock-wave initiation.
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