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Publication Citation: Rapid-Heating of Ionic Energetic Materials using a Micro-Differential Scanning Device

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Author(s): Nicholas W. Piekiel; Richard E. Cavicchi; Michael R. Zachariah;
Title: Rapid-Heating of Ionic Energetic Materials using a Micro-Differential Scanning Device
Published: July 10, 2011
Abstract: We employ a microcalorimeter device to study the thermal decomposition of organic energetic materials at very high heating rates. The compact size of this device enables rapid heating rates and sensitive detection of thermal loads from very small samples. Calibration for the device was done by heating 3 samples with known thermal properties, Sn, KNO3, and KClO4 at the desired heating rates to determine the temperature profile for each rate. The samples: 5-amino-1H-tetrazole, 5-amino-1-methyl-1H-tetrazolium dinitramide, 1,5-diamino-4-methyl-1H-tetrazolium dinitramide, and 1,5-diamino-4-methyl-1H-tetrazolium azide, were all tested at four heating rates ranging from ~1,300-29,000 oC/s. These heating rates are orders of magnitude greater than those used in traditional DSC experiments, and the unique thermal signatures can be compared in the different heating regimes. Comparison at high and low heating rates shows that the activation energies at these vey high heating rates are significantly lower than those observed in traditional DSC ( low heating rate) measurements.
Citation: Thermochimica ACTA
Keywords: explosives, energetic materials, calorimetry, microcalorimeter, nanocalorimeter, microhotplate, microheater, mems, microelectromechanical systems, differential scanning calorimeter
Research Areas: Thermophysics, Chemistry
DOI: http://dx.doi.org/10.1016/J.Tca.2011.04.015  (Note: May link to a non-U.S. Government webpage)
PDF version: PDF Document Click here to retrieve PDF version of paper (625KB)