【作者】 项汛；

【导师】 叶迎华；

【作者基本信息】 南京理工大学 ， 军事化学与烟火技术， 2006， 硕士

【摘要】 本文设计了带导气管结构的锆系烟火药闪光灯，研究和分析了锆系烟火药闪光灯的极限装药量、压力变化和闪光持续时间。研究结果表明：锆系烟火药燃烧时产生大量的高温高压气体，并且由于导气管内径比较小、比较狭长，不能及时排出气体，限制了装药量的提高，所以加装了导气管的锆系烟火药闪光灯虽然确实能增加较大一部分装药量，但效果不理想，不适合作为固体激光器的泵浦源。 基于烟火药燃烧辐射的机理，设计并研究了Zr-O₂化学闪光灯，借助于Zr的差热分析实验，研究了Zr-O₂燃烧反应的机理，得到Zr在O₂中的着火点约为209℃。同时通过大量实验研究了锆条尺寸、充氧压力以及点火电压对Zr-O₂化学闪光灯性能的影响。研究结果表明：（1）锆条越细、充氧压力越高、点火电压越高越有利于Zr-O₂化学闪光灯的点火和燃烧过程；（2）Zr在氧气中的燃烧不仅没有气体产物生成，而且还因为消耗氧气，使闪光灯管内的压力降低，因此，Zr-O₂体系用于闪光灯更安全；（3）Zr-O₂闪光灯的发射光谱分布主要集中在近红外区的750nm～900nm范围内，可见光区比较少，比较符合激光工作介质Nd:YAG的吸收光谱（以750nm和810nm为中心的两个主要辐射带），可以作为Nd:YAG固体激光器的泵浦源。更多还原

【Abstract】 A Zirconium （Zr） type pyrotechnics flashlamp with an air hose was devised in this dissertation. The limit of charge mass, pressure history and flashing duration of it were also investigated. It limited the increase in charge mass that a great deal of gas with high pressure and temperature, which was produced from combustion of Zr type pyrotechnics, could not be vented from the long and narrow air hose in time. Therefore the Zr type pyrotechnics flashlamp with an air hose is not appropriate as a pump source of Nd:YAG laser.Based on the combustion-radiation theory of pyrotechnics, a Zr-O₂ chemical flashlamp was devised and studied. The reaction mechanism of Zr and O₂ was studied via differential thermal analysis of Zr. The ignition point of Zr in O₂ is about 209℃. The influences of the dimension of Zr strip, the pressure of O₂ and the voltage for ignition on the performances of the Zr-O₂ chemical flashlamp were investigated on the basis of a large number of experiments. The results were as follows: （1） The thinner Zr strip, higher pressure of O₂ and higher voltage for ignition make for ignition and combustion of the Zr-O₂ flashlamp. （2） The pressure in the flashlamp continues reducing since the combustion of Zr in O₂ consumes O₂ and produces no gas, which indicates Zr and O₂ can be used safely for flashlamp. （3） The emission spectrum of Zr-O₂ flashlamp distributes mainly in the range of 750 nm～900nm, which accords with the absorption spectrum of Nd:YAG, so it can be used as pump source of Nd:YAG laser.更多还原