Effect of Aluminum Powder on the Luminous Intensity of an Illuminant

Abstract:

The particle diameter and luminous intensity of aluminum powder were measured by laser analyzer and photo-effect tester. The luminous intensity of [Ba(NO3)2＋Al] illuminant were studied for different shape and diameter of aluminum powder as well as ultra-fine powder prepared by chemical method. The results show that the luminous intensity increases with particle size reduced, and luminous intensity of non-spherical aluminum is more than that of spherical aluminum. The change rate of luminous intensity increases rapidly when particle diameter was less than 2μm. It’s change rate in [0.6，2.13] is 4.37 times that in [2.13，4.24] interval.The ultra-fine aluminum powder and the submicron aluminum powder can effectively enhance the luminous performance of pyrotechnics.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 2689-2692
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.2689
• Online since: May 2012
• Authors: Jia Hui Qu, Hai Xia Duan, Xue Feng Du
• Keywords: Aluminum Powder, Illuminant, Luminous Intensity, Ultra-Fine Powder

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