Shock-Induced the Ignition Mechanism of Micrometer Aluminum/Propylene Oxide

Abstract

An incident shock tube technique has been used to measure the ignition delay time for propylene oxide-oxygen-nitrogen mixtures in the temperature range of 900 to 1250K. Ignition delay times of CO*(460.3nm) and AlO (470.5nm) were measured using pressure sensors under series of shock strength. The ignition time of AlO was linearly decreased as the induced shock wave strength was increased. The spectral intensities of AlO under corresponding to shock wave strength were evaluated by intensity CCD(ICCD) spectral system triggered by optic signal.