Preparation Of Energetic Multilayer Film And Study Of The Electrical Explosion Performance

With the development of modern technology and the application of high power equipments, a great deal of threats is caused by the application of traditional initiating explosive devices in high density of electromagnetic interference and radio-frequency interference. The electromagnetic attacks bring a great challenge to the traditional initiating explosive devices. Thus the slapper detonator arises at the historic moment, and explosion foil is the core of the slapper detonator. This thesis mainly discusses the electrical explosion properties of Al/Ni multilayer foils explosion, and the main contents and research results are as follow:(1) The preparation of Al/Ni multilayer film employ the multi-functional magnetron sputtering and the exploding bridge fabrication utilize the lithography. The Al/Ni multilayer foils include the uniform appearance and resistance.(2) Surface and cross-section morphology of Al/Ni multilayer films are observed with SEM and TEM. The EDS analyze the element distribution. The phase and phase evolution are studied by XRD. The DSC research heat release characteristics of the alloying reaction. The research results show that the Al/Ni multilayer films have smooth surface and the interface of layered structure is clear. There is no significant premixed phenomenon. The Al/Ni multilayer films have good crystal properties. After annealing treatment, the phase evolution rule form the Al3 Ni, Al3Ni2 and Al/Ni alloy. The Al/Ni multilayer films alloying reaction exists three exothermic peaks. The position and strength of exothermic peak change with the modulation cycle and Cu layer thickness.(3) The Al/Ni multilayer exploding foil has the electric explosion test by using self-made electric explosive circuits. The test results show that the initiating threshold arise with increasing modulation period,and initiating threshold increase at first and then decrease because of increasing the insert Cu layer thickness.(4) The Cu, Al, Al/Ni multilayer foils explosion are simulated by FIRESET model. The results show that the simulation results and experimental test have some certain error, especially in the initial time of the electrical explosion. This model has been revised according to the defects. The simulation results almost identical with the experimental tests.