Abstract
Stabilization of a premixed boron—air flame at the Bunsen burner nozzle exit is studied. The normal burning velocity of the gaseous suspension of boron particles is determined by spectral zonal camera recording. Qualitative spectral analysis of the particle-gas flame showed the presence of fluctuation bands in the range of 508–600 nm due to the radiation from BO2 molecules, which confirms gas-phase combustion of the boron particles in the gaseous suspension. Chemical, particle-size, and morphological analyses of the condensed combustion products of powdered boron in air showed the presence of submicron and micron particles with number mean diameters of 100 nm and 14 fum, respectively.
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