Numerical Modeling Of Self-Propagating Reactions In Ru/Al Nanoscale Multilayer Foils

摘要: The Ru/Al system integrates high energy density and product ductility serves as an alternative for utilization nanoscale reactive multilayer. We present a modeling study that relates the Ru-Al phase transformations occurring during self-propagating reactions with macroscopic reaction parameters such net front velocity temperature. coupled equations mass thermal transport used numerical scheme to solve differential equations. calculated temporal evolution of temperature distribution in function multilayer bilayer thickness. velocities were between 4.2 m/s 10.8 m/s, maximal temperatures up 2171 K, good agreement measured data. Interfacial premixing, estimated be around 4 nm, had large influence on reaction velocities at smaller thicknesses. Finally, theoretical results help explain experimental findings guide tailoring properties multilayers applications.