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首页> 外文会议>American Physical Society Topical Conference on Shock Compression of Condensed Matter >Shock-Induced Chemical Reactions in Structural Energetic Materials
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Shock-Induced Chemical Reactions in Structural Energetic Materials

机译：结构能量材料中的冲击诱导的化学反应

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Various powder mixtures like intermetallic mixtures and mixtures of metals and metal oxides have potential applications as structural energetic materials (SEMs). Technologies of varying the compositions and the powder sizes and their synthesis are being investigated to provide multiple desirable characteristics, like high strength and high energy content. In this paper, we formulate a model for SEMs for their application in shock conditions, in the framework of nonequilibrium thermodynamics and continuum mechanics. A mixture of Al and KClO4 is selected as the example for SEMs. A mixture, pore collapse and chemical reaction model are included. By adapting energy barriers for reaction as a function of temperature, particle size and pressure and introducing a relaxation mechanism in the reaction model, a shock-induced chemical reaction model is developed. The variation of the relaxation mechanism is also modeled. The initiation and propagation of chemical reactions are studied. The time and spatial dependency of chemical reaction on the shock wave conditions are investigated.
机译：各种粉末混合物等金属间混合物和金属和金属氧化物的混合物具有潜在的应用，作为结构能量材料（SEM）。正在研究改变组合物和粉末尺寸的技术及其合成以提供多种理想的特性，如高强度和高能量含量。在本文中，我们在非奇铸热力学和连续式机械框架中为SEMS提供了SEM的应用。选择Al和KclO4的混合物作为SEM的实施例。包括混合物，孔隙塌陷和化学反应模型。通过将能量屏障适应反应作为温度，粒度和压力的函数，并在反应模型中引入弛豫机制，开发了冲击诱导的化学反应模型。还建模了松弛机制的变化。研究了化学反应的起始和传播。研究了化学反应对冲击波条件的时间和空间依赖性。

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