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Fabrication of gradient structured HMX/Al and its combustion performance.
- Source :
-
Combustion & Flame . Apr2021, Vol. 226, p222-228. 7p. - Publication Year :
- 2021
-
Abstract
- The incorporation of aluminum (Al) into explosives represents a facility and efficient way to enhance the energy output through the secondary reaction between Al and the detonation products of explosive. The Al/O ratio and microstructure of HMX/Al play critical roles in combustion performance and energy output. Herein, a gradient structured HMX/Al composite has been designed and fabricated via 3D printing technology using well-dispersed HMX/Al-based ink. For HMX/Al lines, the second reaction heat increases from 196.5 J/g to 1644.8 J/g and the burning rate would decrease from 14.6 to 12.0 mm/s with Al content increased from 10 to 30 wt%. For gradient structured HMX/Al, the burning rate could be controlled by varying the component ratio and the burning rate of each component in the gradient structure was higher than that of the normal HMX/Al counterpart. Furthermore, a gradient evolution of pressure output was monitored for gradient structured HMX/Al cylinder ignited by the laser. These results indicate that the gradient structure as an effective approach can tune combustion performance and energy output of HMX/Al. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HEAT of combustion
*HEAT of reaction
*COMBUSTION
*THREE-dimensional printing
Subjects
Details
- Language :
- English
- ISSN :
- 00102180
- Volume :
- 226
- Database :
- Academic Search Index
- Journal :
- Combustion & Flame
- Publication Type :
- Academic Journal
- Accession number :
- 149293548
- Full Text :
- https://doi.org/10.1016/j.combustflame.2020.12.003