This article is cited in 22 papers

Ignition and combustion of pyrotechnic compositions based on microand nanoparticles of aluminum diboride in air flow in a two-zone combustion chamber

D. A. Yagodnikov^a, A. V. Voronetskii^a, V. I. Sarab'ev<sup>b

a</sup> Bauman Moscow State Technical University, Moscow, 105005, Russia
^b Federal Research and Production Center "Research Institute of Applied Chemistry", Sergiyev Posad, 141313, Russia

Abstract: This paper presents the experimental study of ignition and combustion of micro- and nanoparticles of aluminum diboride as part of pyrotechnic energy-saturated compositions in a gas generator with an air afterburner chamber and the thermodynamic calculations of combustion of pyrotechnic compositions based on aluminum diboride in air. The discharge of the combustion products from the afterburner chamber is recorded on video. It is shown that replacing micron aluminum diboride by powdered diboride with a mass-average diameter of particles equal to $\approx$ 270 nm in the pyrotechnic composition and increasing the pressure in the afterburner chamber cause the combustion efficiency in air to increase by 5–20%.

Keywords: combustion, nanoscale aluminum diboride, pyrotechnic composition, air, dual-zone working region, combustion efficiency.

UDC: 536.46

Received: 08.05.2015
Revised: 25.11.2015

DOI: 10.15372/FGV20160307

 English version: Combustion, Explosion and Shock Waves, 2016, 52:3, 300–306

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