Investigation on the exploding foil initiators ignition enhanced by explosion-electricity coupling  

作　　者：Songmao Zhao Haotian Jian Ke Wang Zheng Ning Peng Zhu Ruiqi Shen 

机构地区：[1]School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing,210094,China [2]Science and Technology on Applied Physical and Chemistry Laboratory,Shanxi Applied Physics and Chemistry Research Institute,Xi'an,710061,China [3]Micro-Nano Energetic Devices Key Laboratory,Ministry of Industry and Information Technology,Nanjing,210094,China [4]Xi'an Modern Chemistry Research Institute,Xi'an,710061,China

出　　处：《Defence Technology（防务技术）》2024年第12期1-11,共11页Defence Technology

基　　金：the Science and Technology on Applied Physical Chemistry Laboratory, China (Grant No.6142602220101) to provide fund for conducting experiments。

摘　　要：Explosion-electricity coupling(EEC) is a technical method to induce electric energy into the plasma material produced by explosion to improve the output of explosion.Exploding foil initiator(EFI) which could produce plasma during electric explosion can serve as a good carrier for studying the EEC.To investigate the enhancement ability and mechanism of EEC in EFI ignition performance,a kind of EFI chips which could realize the EEC effect was designed and fabricated to observe the characteristics of current and voltage,flyer and plasma temperature during Boron Potassium Nitrate(BPN) ignition of the EFI.It was found that the EEC could enhance EFI ignition in terms of energy utilization,ignition contact surface,and high-temperature sustainability of plasma:firstly,the EEC prolonged the late time discharge(LTD) phase of the electric explosion,making the energy of capacitor effectively utilized;secondly,the EEC could create a larger area of ignition contact surface;last of all,the EEC effect enhanced its hightemperature sustainability by sustaining continuous energy input to plasma.It also was found that the ignition voltage of BPN could be reduced by nearly 600 V under the condition of 0.4 μF capacitance.The research has successfully combined EEC with EFI,revealing the behavioral characteristics of EEC and demonstrating its effective enhancement of EFI ignition.It introduces a new approach to improving EFI output,which is conducive to low-energy ignition of EFI,and expected to take the ignition technology of EFI to a new level.

关 键 词：Exploding foil initiator Explosion-electricity coupling PLASMA Ignition mechanism Boron potassium nitrate 

分 类 号：TJ450[兵器科学与技术—火炮、自动武器与弹药工程] TQ560.1[化学工程—炸药化工]