Novel (MnO 2 /Al) thermite colloid: an opportunity for energetic systems with enhanced performance
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Novel (MnO2/Al) thermite colloid: an opportunity for energetic systems with enhanced performance Sherif Elbasuney1,2,*, Gharieb S. El-Sayyad2,3,* M. Abd Elkodous4,5
, M. Yehia2, M. Gaber Zaky2, and
1
Head of Nanotechnology Research Centre, Military Technical College(MTC), Egyptian Armed Forces, Kobry Elkoba, Cairo, Egypt School of Chemical Engineering, Military Technical College (MTC), Egyptian Armed Forces, Kobry Elkoba, Cairo, Egypt 3 Drug Radiation Research Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt 4 Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8580, Japan 5 Center for Nanotechnology (CNT), School of Engineering and Applied Sciences, Nile University, Sheikh Zayed, Giza 16453, Egypt 2
Received: 13 June 2020
ABSTRACT
Accepted: 12 October 2020
The current study highlights a sustainable fabrication of nanoscopic thermite (MnO2/Al) system, composed of MnO2 nanoparticles with an average particle size of about 20.8 nm prepared by a hydrothermal processing technique. In addition, it contains aluminium particles having a combustion heat of 32,000 J/g, which is very attractive for advanced energetic systems. Plate-like aluminium nanoparticles with an average particle size of 100 nm were developed by wet milling. Our results revealed aluminium optimum solid loading in tri-nitrotoulene (TNT), which was found to be 8.0 wt%. At this optimum solid loading level, aluminium nanoparticles increased the destructive effect of TNT by 25.0%. While, stoichiometric colloidal mixture of both MnO2 and Al nanoparticles exhibited a 65.0% increase in the destructive effect of TNT. Our work presents an intimate mixing between nanothermite particles, where particle size and inter-particles’ distance are at the nanoscale. To sum up, TNT detonation wave was supported with one of the most potent thermite reactions occurring with maximum rate.
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Springer Science+Business
Media, LLC, part of Springer Nature 2020
1 Introduction Basically, the heat output of common explosives is limited to combustion of hydrocarbon elements (C, H) [1–3]. Reactive metal particles, with high
combustion enthalpies, can boost the heat output of common explosive materials [3–5]. Even though, trinitrotoluene (TNT) is a universal explosive material in terms of cost, stability, availability, applications. TNT can be melted at 80 °C and mixed with other explosive materials for filling all types of ammunition
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https://doi.org/10.1007/s10854-020-04653-4
J Mater Sci: Mater Electron
warheads. However TNT exposes limited performance; that could be correlated to its limited heat output as represented in Fig. 1. It is obvious that TNT low oxygen content leads to low performance. Interestingly, vigorous exothermic redox reactions can be obtained by a mixture of meta
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