Melt Dispersion Mechanism for Fast Reaction of Nanothermites

摘要

The theoretically predicted relationship tor the relative flame rate versus relative particle size based on the melt dispersion mechanism MDM, which was previously confirmed for oxidation of 40-120 nanometer diameter aluminum particles, is found 10 be in agreement with experiments for 1-3 micrometer diameter Al particles and fluorination. The main physical parameters for MDM pressure in molten particle, cavitation threshold, and nanoclusters' velocity have been estimated for micron scale particles. The results suggest parameters that could be controlled during particle synthesis that would enable micron scale Al particles to react and achieve the performance of nanoscale Al particles.