Deflagration to detonation transition in mechanoactivated mixtures of ammonium perchlorate with aluminum

31st International Conference on Equations of State for Matter

Shevchenko, A.A.^1,2 ; Dolgoborodov, A. Yu^1,2,3 ; Kirilenko, V.G.^2 ; Brazhnikov, M.A.^2

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe Shosse 31, Moscow

115409, Russia^1

Semenov Institute of Chemical Physics, Russian Academy of Sciences, Kosygina 4, Moscow

119991, Russia^2

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13, Moscow

125412, Russia^3

关键词: Ammonium perchlorates;    Deflagration to detonation transition;    Different stages;    Ignition points;    Nichrome wire;    Process development;    Steady-state detonation velocities;    Steel tube;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012068/pdf
DOI  :  10.1088/1742-6596/774/1/012068

来源: IOP

【 摘 要 】

Deflagration-to-detonation transition (DDT) in aluminum-ammonium perchlorate (Al/AP) loose-packed charges (80% porosity) has been studied. The charges were manufactured from preliminary mechanoactivated mixtures. The mixtures placed in steel tubes 10 mm in diameter were ignited by Nichrome wire. It was found that it is possible to distinguish three parts corresponding to different stages of DDT process development. Steady-state detonation velocity reached the level of 2500 m/s at the distance of 90 mm from the ignition point.