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Synthesizing aluminum particles towards controlling electrostatic discharge ignition sensitivity |
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| Institution: | 1. School of Physics and Materials Engineering, Dalian Nationalities University, Dalian 116600, PR China;2. School of Aeronautics and Astronautics, Faculty of Vehicle Engineering and Mechanics, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, PR China;1. Univ. Paris Sud, LEMHE-ICMMO, CNRS UMR 8182, Bât. 410, 91405 Orsay Cedex, France;2. Université d''Evry Val d''Essonne, LAMBE, CNRS-CEA UMR 8587, Boulevard François Mitterrand, 91025 Evry Cedex, France |
| Abstract: | Aluminum particles were synthesized with shell thicknesses ranging from 2.7 to 8.3 nm and a constant diameter of 95 nm. These fuel particles were combined with molybdenum trioxide particles and the electrostatic discharge (ESD) sensitivity of the mixture was measured. Results show ignition delay increased as the alumina shell thickness increased. These results correlated with electrical resistivity measurements of the mixture which increased with alumina concentration. A model was developed using COMSOL for ignition of a single Al particle. The ignition delay in the model was consistent with the experimental results suggesting that the primary ESD ignition mechanism is joule heating. |
| Keywords: | Aluminum oxidation Joule heating Electrostatic discharge Energetic materials Ignition delay Electrical conductivity |
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