Laser Ignition Properties of B/KNO3 Doped with Aluminum Nanoparticles
In this paper,we adjust laser ignition property of B/KNO3 by doping aluminum nanoparticles additives in B/KNO3 powder.The results indicated that the threshold and delay-time decreases first and then increases as the increasing of content of aluminum and when the content of aluminum is 1.0%,the threshold and delay-time is minimal(0.25 W,12 ms,respectively).Experiment shows that no obvious difference on la-ser absorption is found between pure B/KNO3 and B/KNO3 mixtures with additives.And the thermal conductivity increases linearly as the Al concentration increasing.The ignition threshold is synthetically affected by changes of thermal conductivity.
laser ignitionignition thresholddelay-timeB/KNO3 doped with aluminum nanoparticles
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