Design and Electrical Explosion Performance Study of Al-based Energetic Thin Films
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摘要:为探究不同材料Al基含能薄膜在低能爆炸箔起爆系统中的电爆性能，对Al基含能薄膜的厚度、桥区形状和尺寸进行了仿真设计，优选出最佳桥区形状，在此基础上通过电爆试验及高速摄影对Al/Ni、Al/Ti、Al/Cu、Al/CuO 4种Al基含能薄膜的电爆性能及发火过程进行了对比研究。结果表明：Al/Ti薄膜综合性能最佳，具有较大的沉积能量、能量利用率和桥区电流密度，同时最佳起爆电压适中、火焰高度较高、持续时间较长；Al/Ni薄膜所需最佳起爆电压最小，但作用能力较差；Al/CuO薄膜具有最佳作用能力，但所需最佳起爆电压较大；Al/Cu薄膜的电爆性能最不突出。
Abstract:In order to explore the electric explosion performance of different materials of Al based energetic thin films in low-energy explosive foil initiation system, the thickness, bridge shape and size of Al based energetic thin films were designed through simulation and the optimal bridge shape was selected. On this basis, a comparative study was conducted on the electrical explosion performance and ignition process of four Al based energetic thin films including Al/Ni, Al/Ti, Al/Cu, and Al/CuO through electrical explosion test and high-speed photography. The study shows that the Al/Ti film has the best overall performance with larger deposition energy, energy utilisation and bridge current density, as well as moderate optimum initiation voltage, higher flame height and longer flame duration; The optimum initiation voltage of Al/Ni film is the smallest, but its action capability is relatively poor; The Al/CuO film has the best action capability, but the required optimum initiation voltage is relatively high; The electrical explosion performance of Al/Cu film is the least aggressive.
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