The role of transitional phase formation during ignition of reactive multilayers
The role of transitional phase formation during ignition of reactive multilayers
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DOI：
10.1063/1.4930022
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发表时间：
2015-09
影响因子：
4
通讯作者：
C. Pauly;K. Woll;Benjamin Bax;F. Mücklich
中科院分区：
文献类型：
--
作者：
C. Pauly;K. Woll;Benjamin Bax;F. Mücklich
研究了反应性Ru/Al多层膜的着火过程，测量了反应性Ru/Al多层膜的着火温度，计算了反应性Ru/Al多层膜的着火活化能。部分反应的样品的微观结构的调查表明，晶粒边界占主导地位的形成的过渡Al6Ru相点火过程中起着重要的作用，通过触发更多的放热形成的最终产品相。热板点火的模型，提出了一个设计的三组分Ru/Al/Cu多层显示出强烈降低的点火温度与其二元对应物的基础上，并进行了测试。结果表明，在点火过程中的过渡相的形成的作用，并提供了进一步的手段来修改反应系统的着火温度。
The ignition processes of sputter-deposited reactive Ru/Al multilayers were studied, measuring temperatures and calculating activation energy of ignition for bilayer thicknesses between 22 nm and 222 nm. Microstructural investigations of a partially reacted sample show that the grain boundary-dominated formation of a transitional Al6Ru phase plays an important role during ignition by triggering a more exothermic formation of the final product phase. A model of hot-plate ignition is proposed, based and tested on a designed three-component Ru/Al/Cu multilayer showing a strongly reduced ignition temperature versus its binary counterpart. The results demonstrate the role of transitional phase formation during ignition and provide a further means to modify ignition temperatures of reactive systems.