Exothermic Properties and Damage Effects of Multilayered Al/Ni Energetic Structural Materials

In order to obtain high mechanical properties and release energy density, multilayered Al/Ni energetic structural materials were prepared by electrodeposition and hot pressing method. The effect of hot pressing temperature on the exothermic properties of Al/Ni energetic structural materials was studied. The damage effect of the energetic fragment on double-layered target boards at various impact velocities was obtained through shooting experiments. The results show that with the increase of the hot pressing temperature, the diffusion reaction at Al/Ni interfaces becomes intense, leading to a decrease of exothermic heat from 898 J/g to 782 J/g. Under high-speed impact, the Al/Ni energetic fragment experiences a violent deflagration reaction, which has a significant damage effect on the double-layered target boards. When the impact velocity of the energetic fragment increases from 1241 m/s to 1478 m/s, the perforation size of the main target plate is almost unchanged, however the damage area of the rear target plate increases significantly.