TiW/Ni/Au爆炸箔制备及性能研究

Study on Preparation and Properties of TiW/Ni/Au Exploding Foil

爆炸箔起爆器因其高可靠性、高安全性而在各类战术武器中备受青睐,但其起爆需要较高的输入能量和电压,需配备专门的起爆线路,导致成本高、体积大,在常规武器中应用受限。为顺应爆炸箔起爆器低能化、小型化的发展趋势,获得充电电压在1.5 kV以下的爆炸箔起爆器,设计和制备一种采用TiW/Ni/Au复合薄膜的爆炸箔,并对其电爆性能和驱动能力进行了深入研究。研究结果表明:桥区尺寸为0.15 mm×0.15 mm的TiW/Ni/Au爆炸箔性能最佳,可在0.1μF储能电容、800 V充电电压下可靠发生电爆炸,使25μm厚的聚酰亚胺飞片,在直径350μm的加速膛剪切作用下,在0.4μs内加速到3 920 m/s;与Cu箔相比,800 V充电电压下,相同桥区尺寸的TiW/Ni/Au爆炸箔电爆炸能量利用效率从3.11%提高到了12.76%。

Exploding foil initiator is very popular in all kinds of tactical weapons because of its high reliability and security,but its initiation requires high input energy and voltage,so it needs to be equipped with special initiation circuit,which leads to high cost and large volume.Its application in conventional weapons is limited.In order to comply with the development trend of low energy and miniaturization of exploding foil initiator and obtain and exploding foil initiator with charging voltage below 1.5 kV,a kind of exploding foil with TiW/Ni/Au composite film was designed and prepared,and its electric explosion performance and driving ability were studied deeply.The results show that the TiW/Ni/Au exploding foil with bridge size of 0.15 mm×0.15 mm has the best performance.It can reliably explode when the charging voltage is 800 V and the energy storage capacitance is 0.1 μF,so that the 25 μm-thick polyimide flyer is accelerated to 3 920 m/s within 0.4 μs under the shear action of an accelerated bore with a diameter of 350 μm.Compared with Cu foil,the energy utilization efficiency of TiW/Ni/Au exploding foil is increased from 3.11% to 12.76% at 800 V charging voltage.