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"The Effect of Slow Heating Rates on the Reaction Mechanisms of Nano and Micron Composite Thermite Reactions "

J. J. Granier and M. L. Pantoya

Journal of Thermal Analysis and Calorimetry, v 85, n 1, July, 2006, p 37-43

Thermal analyses were performed on Al+MoO3 thermite reactions as a function of Al particle size (ranging from 50 to 20 µm) and heating rate (from 2.5 to 15 K per min). Results include ignition (onset) temperatures and heats of reaction. The nano-thermites initiate prior to reactant phase changes and at least 300C below micron-thermites. The differences in ignition temperatures are suggestive of different ignition mechanisms. Nano-thermites display higher heats of reaction that are dependent on experimental conditions.