INITIATION OF REACTIVE WAVES IN METALLIC POWDER MIXTURES USING A HIGH-EXPLOSIVE BOOSTER

被引:0
|
作者
Lee, Julian J. [1 ]
机构
[1] DRDC Suffield, Medicine Hat, AB T1A 8K6, Canada
来源
SHOCK COMPRESSION OF CONDENSED MATTER - 2009, PTS 1 AND 2 | 2009年 / 1195卷
关键词
titanium; silicon; boron; aluminum; CuO; MoO3; shock-induced reaction; shock-assisted reaction; gasless;
D O I
暂无
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Reactions were initiated in a number of metallic powder mixtures including titanium-silicon, titanium-boron, and aluminum with copper oxide or molybdenum trioxide. The reactions were initiated in long cylinders ten charge diameters in length filled with compacted powders of micron-size particles. The cylinders were fitted with a high explosive booster in a donor-acceptor configuration to initiate the reaction with a strong shock. Using embedded shock pins to detect the arrival of the shock and embedded fiber-optic cables to detect luminous reactions, the propagation of the transmitted shock and ensuing reaction was observed. The strong shock from the booster was found to transmit into the powder, then steadily decay until the end of the cylinder. A luminous front was found to follow the leading shock closely for two to four charge diameters, then gradually decouple and lag behind. Although the shock and reactive waves were found to propagate supersonically for a certain distance, self-sustained, reaction-driven waves were clearly not observed as the waves rapidly decayed and displayed behavior akin to shock-assisted reactions reaching completion long after the passage of the shock front.
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页码:173 / 176
页数:4
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