Thermal imaging of nickel-aluminum and aluminum-polytetrafluoroethylene impact initiated combustion

Abstract

Articles you may be interested inThe role of microstructure refinement on the impact ignition and combustion behavior of mechanically activated Ni/Al reactive composites Bottom-up modeling of Al/Ni multilayer combustion: Effect of intermixing and role of vacancy defects on the ignition process Investigations on the self propagating reactions of nickel and aluminum multilayered foils Combustion temperatures from impact initiated nickel-aluminum (NiAl) and aluminumpolytetrafluoroethylene (Al-PTFE) materials have been measured using a high-speed two-camera imaging pyrometer. The materials were launched with a nominal velocity of 1700 m/s into a sealed chamber. Upon impact into a steel anvil chemical reactions were initiated and a flame propagated through the chamber. The measured temperature after impact was 3600 K (NiAl) and 3300 K (Al-PTFE).

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