Study of thermite mixture consolidated by the cold gas dynamic spray process

18th APS-SCCM; 24th AIRAPT

Bacciochini, A.^1 ; Maines, G.^1 ; Poupart, C.^1 ; Akbarnejad, H.^1 ; Radulescu, M.^1 ; Jodoin, B.^1 ; Zhang, F.^2 ; Lee, J.J.^2

University of Ottawa, Department of Mechanical Engineering, 161 Louis Pasteur, Ottawa

ON

K1N 6N5, Canada^1

Defence Research and Development Canada-Suffield, PO Box 4000, Stn Main, Medicine Hat

AB

T1A 8K6, Canada^2

关键词: Arbitrary shape;    Cold gas dynamic spray;    Deflagration tests;    Flame propagation;    High reactivity;    Metal oxides;    Powder mixtures;    Thermite mixtures;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/5/052003/pdf
DOI  :  10.1088/1742-6596/500/5/052003

来源: IOP

【 摘 要 】

The present study focused on the cold gas dynamic spray process for manufacturing porosity free, finely structured energetic materials with high reactivity and structural integrity. The experiments have focused the reaction between the aluminium and metal oxide, such as Al-CuO system. The consolidation of the materials used the cold gas dynamic spray technique, where the particles are accelerated to high speeds and consolidated via plastic deformation upon impact. Reactive composites are formed in arbitrary shapes with close to zero porosity and without any reactions during the consolidation phase. Reactivity of mixtures has been investigated through flame propagation analysis on cold sprayed samples and compacted powder mixture. Deflagration tests showed the influence of porosity on the reactivity.