【摘要】 为探究不同硅Si含量对铝硅合金/四氧化三铅（Al-Si/Pb₃O₄）复合含能材料燃烧特性的影响,分别针对不同体系开展了差示热分析、点火延迟时间、定容燃烧和恒压燃烧等测试表征,利用非接触式光学手段对复合含能材料的点火燃烧过程进行了观察。通过分析测得的光电信号和燃面推移图像可得到,随着Al-Si合金中Si含量的增加,Si的质量分数为20%的Al-20Si/Pb₃O₄复合含能材料具有最短的点火延迟时间和最快的能量释放速率,可在维持较高燃温的基础上有效增强能量释放;而当Si的质量分数增加到30%时,复合含能材料的燃速减慢,表现出更偏向于点火药的燃烧特性。更多还原

【Abstract】 In order to explore the effects of different silicon （Si） contents on the combustion characteristics of AlSi/Pb₃O₄ composite energetic materials,differential thermal analysis,ignition delay time,constant volume combustion and constant pressure combustion were carried out for different composite energetic materials.And the ignition combustion processes of the composite energetic materials were observed by non-contact optical methods.By analyzing the measured photoelectric signals and the burn-up images,it can be concluded that the Al-Si/Pb₃O₄ energetic material withw（Si）=20% has the shortest ignition delay time and the fastest energy release rate,which can effectively enhance the energy release performance on basis of maintaining a higher combustion temperature.While when the mass fraction of Si increases to 30%,the combustion rate of the energetic system slows down,showing a reaction characteristic that is more inclined to that of the ignition powder.更多还原