Study Of Chemical Reactions Sequence And Calculation Of Self-Propagating Front Velocity In Multilayer Al-Ni Thermite Structures
PROCEEDINGS OF THE 2017 IEEE RUSSIA SECTION YOUNG RESEARCHERS IN ELECTRICAL AND ELECTRONIC ENGINEERING CONFERENCE (2017 ELCONRUS)(2017)
摘要
In recent years multilayer structures replaced traditional powder thermite mixtures and opened up new possibilities for nano-and micro-scale surfaces, materials and devices joining processes. This paper presents the results of experimental studies of the thermal wave propagation velocity in multilayered thermite materials. For experimental studies Al-Ni based multilayer structures were formed on various substrates using magnetron sputtering. Evaluation of the wave propagation rate was performed using high-speed video camera. For freestanding foils propagation rate was about 4 m/s, and for a multilayer structure on ABS plastic surface about 2 m/s. In addition, mathematical modeling of the heat release process allowed to theoretically estimate the speed of a chemical reaction front propagation. For example, the calculated value of the front propagation rate for structure on monocrystalline Si with 60 nm aluminium and a 15 nm nickel layers was about 0,52 m/s.
更多查看译文
关键词
multilayer thermite,thermal explosion,wave combustion
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要