Detonation velocity of mechanically activated mixtures of ammonium perchlorate and aluminum

The detonation properties of mechanically activated mixtures of ammonium perchlorate and aluminum were studied. The transition from combustion of low-density charges to detonation was investigated. Dependences of the detonation velocity of compacted charges with various types of aluminum on the activation time, the charge density and diameter were obtained. For compositions with nanosized aluminum, the detonation velocity was found to depend nonmonotonically on the reverse charge diameter, remaining almost unchanged in a certain range of charge diameters. It is shown that the joint use of mechanical activation and nanosized components of the composite explosive significantly increases the detonation capacity, reduces the critical diameter, and shifts the maximum on the detonation velocity vs. density curve to the highest charge densities.