Зажигание борсодержащих высокоэнергетических материалов на основе окислителя и полимерного связующего

Abstract

\n The use of aluminum borides is a promising direction in the development of modern fuel compositions and aircraft. The paper presents experimental data on the kinetics of oxidation of micro-sized powders of aluminum, amorphous boron, aluminum borides AlB2 and AlB12 in air when heated at a constant rate of 10 °C/min., as well as the results of laser ignition of high-energy materials based on ammonium perchlorate, ammonium nitrate, inert and active combustible binders containing these metal powders. It was found that the use of boron-based powders makes it possible to reduce the temperatures of the onset and intensive oxidation, and to increase their completeness of oxidation in comparison with pure aluminum. The obtained dependences of the ignition delay time on the heat flux density showed that AlB2 and AlB12 powders included in the HEM based on ammonium perchlorate, ammonium nitrate, and an active binder are the most effective metal fuels in terms of reducing the ignition delay time and the heat input.\n