摘要
提出了＂介电式复合薄膜点火桥＂的概念,并以Al膜作电极,CuO膜作电介质层,用微细加工技术制备了介电式Al/CuO复合薄膜点火桥样品,尺寸为2000μm×2000μm×2.6μm,电阻值约4Ω。用60 V以上恒压源可激发点火桥发生电爆炸,电爆过程中Al/CuO复合薄膜发生了氧化还原反应,生成的单质Cu使点火桥产生了延迟放电效应。用原子发射光谱双谱线法测试了60 V和80 V激发时点火桥的电爆炸温度和持续时间。60 V激发时点火桥电爆炸温度主要分布在2500~3500 K,持续时间约0.35 ms;80 V激发时点火桥电爆炸温度主要分布在3500~4000 K,持续时间约0.55 ms。
A novel ＂dielectric structure pyrotechnic initiator＂was proposed by integrating reactive multilayer films.The initiator sample prepared by Al/CuO-based reactive multilayer films was fabricated using standard micro electrical mechanical techniques.The dimensions of sample are of 2000 μm×2000 μm×2.6 μm and the resistances is about 4 Ω.It is found that the sample will explode completely after constant voltage has run over 60 V in open-air.The exothermic reaction of Al/CuO multilayer films was proved through analyzing the histories of current,meanwhile Cu produced by exothermic reaction results in＂delayed-time discharge＂of the initiator.A system based on the double-line atomic emission spectroscopy was used to obtain electrical-explosion temperatureand its duration of the pyrotechnic initiators.The electrical-explosion temperature covers from 2500 K to 3500 K and its duration is 0.35 ms when the pyrotechnic initiator is discharged in 60 V.Furthermore,the electrical-explosion temperature covers from 3500 K to 4000 K and its duration is 0.55 ms when the pyrotechnic initiator is discharged in 80 V.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2011年第4期366-369,共4页
Chinese Journal of Energetic Materials
基金
国防科技重点实验室基金资助(9140C3701020901)
关键词
军事化学与烟火技术
介电式
Al/CuO复合薄膜
点火桥
电爆性能
military chemistry and pyrotechnic technology
dielectric structure
Al/CuO multilayer film
pyrotechnic initiator
electrical-explosion performance
