Study on theoretical model for electrical explosion resistivity of Al/Ni reactive multilayer foil  

作　　者：Zehao Wang Tao Wang Pengfei Xue Mingyu Li Qingxuan Zeng 

机构地区：[1]State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China [2]China Ship Development and Design Center,Wuhan 430064,China

出　　处：《Defence Technology（防务技术）》2024年第2期348-356,共9页Defence Technology

基　　金：National Natural Science Foundation of China(Grant No.11872013)for supporting this project.

摘　　要：Al/Ni reactive multilayer foil(RMF)possesses excellent comprehensive properties as a promising substitute for traditional Cu bridge.A theoretical resistivity model of Al/Ni RMF was developed to guide the optimization of EFIs.Al/Ni RMF with different bilayer thicknesses and bridge dimensions were prepared by MEMS technology and electrical explosion tests were carried out.According to physical and chemical reactions in bridge,the electrical explosion process was divided into 5 stages:heating of condensed bridge,vaporization and diffusion of Al layers,intermetallic combination reaction,intrinsic explosion,ionization of metal gases,which are obviously shown in measured voltage curve.Effects of interface and grain boundary scattering on the resistivity of film metal were considered.Focusing on variations of substance and state,the resistivity was developed as a function of temperature at each stage.Electrical explosion curves were calculated by this model at different bilayer thicknesses,bridge dimensions and capacitor voltages,which showed an excellent agreement with experimental ones.

关 键 词：Al/Ni reactive multilayer foil Electrical explosion Resistivity model Phase transition CALCULATION 

分 类 号：TJ410.34[兵器科学与技术—火炮、自动武器与弹药工程]