Improved Exploding Properties of Al/Cu Multilayer Initiators,Propellants, Explosives, Pyrotechnics

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Improved Exploding Properties of Al/Cu Multilayer Initiators
Propellants, Explosives, Pyrotechnics ( IF 1.7 ) Pub Date : 2020-08-13 , DOI: 10.1002/prep.202000047
Yao Wang ₁ , Fei Guo ₁ , Wanjun Wang ₁ , Yong Li ₁ , Qin Zhou ₁ , Zongren Xing ₁ , Liang Wang ₁ , Yuan Gao ₁

Affiliation

Reactive multilayer films (RMFs) are widely used for energetic initiator applications, the reaction behavior and mechanism are systematically researched for ignition. Recently, Investigation into exploding plasma fields has been carried out based on Al/Ni RMFs. However, few papers are concerned about Al/Cu multilayers for exploding initiators. In this paper, an investigation on the influence of Al/Cu multilayers additives on initiators is described in detail. The Al/Cu multilayers are deposited by magnetron sputtering technology and their structure is confirmed by scanning electron microscopy. The periodic multilayer structure with controlled thickness is visible. The initiator containing Al/Cu multilayers exhibits improved exploding properties with a short exploding time, low matching charging voltages, and high flyer velocities in comparison with Cu layers or Al layer‐based initiators. Meanwhile, the flyer kinetic energy increase of up to 30 mJ indicates that this improvement could not come from the Al−Cu alloying reaction alone. The 1‐D non‐stationary acceleration model confirms that the composite electrical behavior is a factor contributing to improved flyer kinetic energy. The ultra‐high‐speed camera system is employed to observe the flyer launching process accelerated by the exploding plasma. The smaller barrel diameter is beneficial for controlling the shearing process to keep good integrity of the flyer. Overall, the electrical exploding properties of initiators can be enhanced substantially based on Al/Cu multilayers.

中文翻译：

Al / Cu多层引发剂的改进爆炸性能

反应性多层膜（RMF）广泛用于高能引发剂应用，系统地研究了反应行为和机理以进行点火。近来，已经基于Al / Ni RMF对爆炸的等离子体场进行了研究。但是，很少有论文涉及用于爆炸引发剂的Al / Cu多层膜。在本文中，详细描述了铝/铜多层添加剂对引发剂影响的研究。通过磁控溅射技术沉积Al / Cu多层膜，并通过扫描电子显微镜确认其结构。具有可见厚度的周期性多层结构是可见的。含Al / Cu多层引发剂的爆炸性能提高，爆炸时间短，匹配充电电压低，与基于Cu层或基于Al层的引发剂相比，飞轮速度更高。同时，高达30 mJ的飞行器动能增加表明，这种改善不能仅来自Al-Cu合金化反应。一维非平稳加速度模型证实，复合电行为是有助于改善飞行器动能的因素。超高速相机系统用于观察由爆炸的等离子体加速的传单飞行过程。较小的机筒直径有利于控制剪切过程，以保持飞轮的良好完整性。总体而言，基于Al / Cu多层可以大大提高引发剂的电爆炸性能。飞行器动能最多增加30 mJ，表明这种改善不能仅来自Al-Cu合金化反应。一维非平稳加速度模型证实，复合电行为是有助于改善飞行器动能的因素。超高速相机系统用于观察由爆炸的等离子体加速的传单飞行过程。较小的机筒直径有利于控制剪切过程以保持飞轮的良好完整性。总体而言，基于Al / Cu多层可以大大提高引发剂的电爆炸性能。飞行器动能最多增加30 mJ，表明这种改善不能仅来自Al-Cu合金化反应。一维非平稳加速度模型证实，复合电行为是有助于改善飞行器动能的因素。超高速相机系统用于观察由爆炸的等离子体加速的传单飞行过程。较小的机筒直径有利于控制剪切过程以保持飞轮的良好完整性。总体而言，基于Al / Cu多层可以大大提高引发剂的电爆炸性能。超高速相机系统用于观察由爆炸的等离子体加速的传单飞行过程。较小的机筒直径有利于控制剪切过程，以保持飞轮的良好完整性。总体而言，基于Al / Cu多层可以大大提高引发剂的电爆炸性能。超高速相机系统用于观察由爆炸的等离子体加速的传单飞行过程。较小的机筒直径有利于控制剪切过程以保持飞轮的良好完整性。总体而言，基于Al / Cu多层可以大大提高引发剂的电爆炸性能。

更新日期：2020-08-13

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