铝粉点火微观机理的光谱研究  

The Spectro-Studies on Micro-Mechanism of Shock Ignition for Aluminium

作　　者：胡栋[1] 叶松[2] 吴旌贺[2] 炎正馨[2] 李萍[2] 孙珠妹[1] 

机构地区：[1]中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室,四川绵阳621900 [2]四川大学高温高压物理研究所,四川成都610065

出　　处：《高压物理学报》2006年第3期237-242,共6页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(10172076)

摘　　要：铝粉是一种含能高的材料,它被广泛地添加到含能材料中。利用3台单色谱仪和OMA谱仪等多种谱仪技术,研究了铝粉在几种不同环境下的快速反应微观特性。研究表明:铝粉冲击波点火的临界条件和铝粉的物理状态相关。微米铝粉点火的临界温度为2 100 K,它接近Al2O3的熔化温度。它表明,在空气中容易氧化的微米铝粉点火,必须使铝粉表面的氧化层熔化。在气相反应中,微米铝粉和氧的反应是主要的;和水的反应是次要的。减小微米铝粉的颗粒尺寸,可以明显提高快速反应温度。含铝复合燃料中的液体燃料反应后的铝粉才能参与反应;铝粉添加至气相反应介质后将明显提高反应温度。The aluminum powder is a high energetic material. It is added into energetic materials. The results show that the critical conditions of shock ignition for micrometer-aluminum powder relate with physical behaviour for aluminum powder. The micro-behaviour of the fast reaction for micrometer-aluminum powder are studied by means of some spectrometer techniques-three monochromaters techniques and OMA spectral techniques. The critical temperature for the micrometer-aluminum powder is about 2100 K,and it is closed to the melting temperature of Al2O3. It is show that the Al2O3 layer must be melted,if the micrometer-aluminum powder may be ignited. It is important that the reaction of micrometer-aluminum powder with oxygen. It is not important that the reaction of micrometer-aluminum powder with water. The micrometer-aluminum powder may react,after a liquid fuel in compound fuel reacts. The reaction temperature is increased when micrometer-aluminum powder is added into energetic material and the particle size of micrometer-aluminum powder is decreased.

关 键 词：铝粉 点火 微观机理 光谱技术 

分 类 号：O657.3[理学—分析化学] TQ038.1[理学—化学]