Understanding and Quantifying the Reactivity of Energetic NanoParticles and NanoComposites.

摘要

The focus of this work was to under stand quantitatively, the nature of the reactivity of nanoparticles and nanocomposites for energetic materials applications. Our approach took two thrusts. 1. Single Particle Kinetics 2. Ensemble Fuel/Oxide Nanocomposite Kinetics. Our goal was to: A. Explore the size resolved reactivity of nanoparticles. B. Explain the behavior using phenomenological modeling and compare with bulk materials. C. Explore condensed state kinetics using a new type of mass-spectrometry tool. Approach Use novel diagnostic tools to probe reactivity of nanocomposites and tease out mechanisms: Including advanced ion-mobility and mass spectrometry tools. Conduct bulk powder measurements in combustion bombs and wires to extract combustion time scales and the role of mixtures and stoichiometry on burning. Use new high heating rate electron microscopy to visualize condensed state reactions between nanocomposites. Conduct Molecular Dynamics simulations to understand properties of nanoparticles.