冲击引发Ti-Si活性粉体反应过程研究
发布时间：2019-01-22 21:23
【摘要】：采用二级轻气炮驱动飞片高速冲击样品管引发管中Ti-Si活性粉体的自蔓延反应,研究在冲击加载条件下,Ti-Si活性粉体中冲击波速度与燃烧反应速度的关系。在实验过程中,采用高速相机对自蔓延反应过程中燃烧波和冲击波的传播速度进行测量。实验结果表明:冲击波在活性粉体中的传播速度接近飞片运动的初始速度,并且随着传播距离的增加,冲击波速度明显减小,这一现象在冲击加载纯Si粉的过程中也得到验证;在冲击加载条件下,活性粉体中燃烧反应的燃烧波以每秒几厘米的速度传播,与冲击波在活性粉体中的传播速度相差巨大,未发现两者相互作用的过程,即未出现冲击波传播速度增加的现象。
[Abstract]:The self-propagating reaction of the Ti-Si active powder in the sample tube was driven by a two-stage light gas gun. The relationship between the shock wave velocity and the combustion reaction rate of the Ti-Si active powder was studied under the shock loading condition. In the process of experiment, high speed camera is used to measure the propagation velocity of combustion wave and shock wave in the process of self-propagating reaction. The experimental results show that the propagation velocity of shock wave in active powder is close to the initial velocity of flyer motion, and with the increase of propagation distance, the velocity of shock wave decreases obviously. This phenomenon is also verified in the process of shock loading pure Si powder. Under the shock loading condition, the combustion wave of the combustion reaction in the active powder propagates at a velocity of several centimeters per second, which differs greatly from the velocity of the shock wave propagating in the active powder. That is, there is no increase in the velocity of shock wave propagation.
【作者单位】： 北京理工大学爆炸科学与技术国家重点实验室;
【基金】：国家自然科学基金(11172043)
【分类号】：TB383.3
，
本文编号：2413567
[Abstract]:The self-propagating reaction of the Ti-Si active powder in the sample tube was driven by a two-stage light gas gun. The relationship between the shock wave velocity and the combustion reaction rate of the Ti-Si active powder was studied under the shock loading condition. In the process of experiment, high speed camera is used to measure the propagation velocity of combustion wave and shock wave in the process of self-propagating reaction. The experimental results show that the propagation velocity of shock wave in active powder is close to the initial velocity of flyer motion, and with the increase of propagation distance, the velocity of shock wave decreases obviously. This phenomenon is also verified in the process of shock loading pure Si powder. Under the shock loading condition, the combustion wave of the combustion reaction in the active powder propagates at a velocity of several centimeters per second, which differs greatly from the velocity of the shock wave propagating in the active powder. That is, there is no increase in the velocity of shock wave propagation.
【作者单位】： 北京理工大学爆炸科学与技术国家重点实验室;
【基金】：国家自然科学基金(11172043)
【分类号】：TB383.3
，
本文编号：2413567
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