Combustion of Aluminum and Boron Agglomerates Free Falling in Air. II. Experimental Results
O. G. Glotov, G. S. Surodin
Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: алюминий, бор, частица, агломерат, горение, время горения, конденсированные продукты горения, остаток горения, морфология, масса остатка, цериметрический химический анализ, неполнота сгорания, сканирующий электронный микроскоп, энергодисперсионный анализ (EDS), элементный состав, aluminum, boron, particle, agglomerate, burning, burning time, condensed combustion products, combustion residue, morphology, mass of residue, cerimetric chemical analysis, incomplete combustion, scanning electron microscope, energy dispersive analysis (EDS), elemental composition
Abstract
The combustion of Al/B agglomerates (0.81/0.19) with a diameter of 320-780 m in free fall in air was first studied by the method of model monodisperse agglomerates method. The dependence of the burning time on size was determined. Burning residue particles were subjected to morphological, chemical, mass, particle size, and elemental (EDS method) analyses. It has been found that the essential features of the combustion mechanism of Al/B agglomerates compared to aluminum are long combustion; the specific core-shell structure of the particles, with boron present in the core and absent in the shell; a slight change in mass and diameter of particles during combustion.
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