СКОРОСТЬ ГОРЕНИЯ ВЫСОКОЭНЕРЕЕТИЧЕСКИХ МАТЕРИАЛОВ, СОДЕРЖАЩИХ МЕТАЛЛИЧЕСКОЕ ГОРЮЧЕЕ НА ОСНОВЕ AL И B

Александр Геннадьевич Коротких, И. В. Сорокин, Е. А. Селихова, Владимир Афанасьевич Архипов
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Abstract

An effective method of increasing the energy characteristics of high-energy materials (HEMs) is the use of boron and metal borides powders which have high values of specific energy released during oxidation and its combustion. This study investigates the powders of amorphous boron and aluminum borides which are used to the composition of solid propellant based on ammonium perchlorate, ammonium nitrate, and an active fuel-binder. Aluminum borides powders were obtained at RI AMM TSU (Tomsk) using the self-propagating high temperature synthesis (SHS) method. We carried out a~series of combustion measurements for the metallized HEM compositions in the range of nitrogen pressure of 0.5—7.0~MPa. The burning rate and power exponent were determined for the test HEM compositions in a constant pressure bomb. It was established that the complete replacement of pure aluminum by amorphous boron powder in HEM increases the burning rate of the HEM sample by 1.9—3.2 times depending on pressure. In this case, the exponent in the combustion law increases from~0.58 to~0.84. The burning rate of the HEM samples containing aluminum borides AlB2 and AlB12 increases by 1.2—1.6 times but the exponent remains constant.
含金属燃料的高能材料燃烧速度
提高高能材料(hem)能量特性的有效方法是使用在氧化和燃烧过程中释放高比能的硼和金属硼化物粉末。研究了以高氯酸铵、硝酸铵和活性燃料粘合剂为基础的非晶态硼铝硼化物粉末,并将其用于固体推进剂的合成。采用自蔓延高温合成(SHS)法制备了硼化铝粉体。在0.5 ~ 7.0 MPa的氮气压力范围内,对金属化HEM进行了一系列的燃烧测试。测定了恒压弹中测试HEM成分的燃烧速率和功率指数。结果表明,用非晶硼粉完全取代纯铝后,HEM样品的燃烧速率随压力的变化提高了1.9 ~ 3.2倍。在这种情况下,燃烧规律的指数从~0.58增加到~0.84。含硼化铝AlB2和al12的HEM样品的燃烧速率提高了1.2 ~ 1.6倍,但指数保持不变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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