کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
207832 461227 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thermal decomposition of pyrotechnic mixtures containing either aluminum or magnesium powder as fuel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Thermal decomposition of pyrotechnic mixtures containing either aluminum or magnesium powder as fuel
چکیده انگلیسی

Thermal behavior of energetic materials is critical to safe production, storage, handling or even demilitarization. In this work, the thermal behavior of Al, Mg, CuO, KMnO4 and also three mixtures containing Al + CuO, Mg + CuO and Mg + KMnO4 were studied experimentally using differential scanning calorimetry and thermogravimetry. These mixtures are sometimes used as pyrotechnic mixtures in military industries. Also, the influence of different heating rates (5, 10, 15 and 20 °C/min) on the DSC behavior of the mixtures was verified. The results showed that as the heating rate was increased, melting points and ignition temperatures of the mixtures were increased. On the other hand, TG–DSC analysis for Mg + KMnO4 mixture indicates that this mixture melts at 283.0 °C and decomposed at 292.1 °C. By replacing KMnO4 with CuO as the oxidizer of the magnesium, these temperatures enhanced to 368.7 °C and 408.3 °C, respectively. However, replacing Mg with Al in the Mg/CuO mixture decreases the melting and ignition temperatures of the mixture to 231.4 °C and 271.9 °C, respectively. The activation energy for each pyrotechnic mixture was computed. Also, the values of ΔS#, ΔH# and ΔG# of their reaction were calculated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 87, Issue 2, February 2008, Pages 244–251
نویسندگان
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