Influence of the Composition of HEMs Formulation on the Ignition Characteristics by Laser Radiation
The results of experimental study of ignition process of compositions of high-energy materials based on ammonium nitrate and energetic binder containing aluminum powders of various particle sizes by CO2-laser radiation in air (with ambient pressure) are presented. Partial or complete replacement of micron-sized aluminum powder on Alex ultrafine powder as part of high-energy materials leads to the reduction of ignition time by decrease the temperature of burning surface, thickness of reaction layer and by increase of the heating rate in condensed phase. It was found that the efficiency of ultrafine aluminum powder additives in formulations increasing with decreasing of laser radiation intensity. The temperature of the formulations burning surface at the ignition moment was measured by usage of the thermal imager. The average temperature of burning surface under ignition by radiant heat flux was 545℃ (formulations containing ultrafine aluminum powder) and 713-820℃ (formulations with micron-sized aluminum powder) for the radiation intensity 60 W/cm2.
ARKHIPOV Vladimir A. KOROTKIKH Alexander G. GROMOV Alexander A.
Research Institute of Applied Mathematics and Mechanics,Tomsk State University,Tomsk,Russia Tomsk Polytechnic University,Tomsk,Russia
国际会议
2011 International Autumn Seminar on Propellants,Explosives and Pyrotechnics(2011国际推进剂、炸药、烟火技术秋季研讨会)
南京
英文
487-490
2011-09-20（万方平台首次上网日期，不代表论文的发表时间）