A direct comparison is made between the effectiveness of Al, Mg, their alloy (Al₃Mg₄), and Si powders as additional fuels in explosives using the thermobaric effect. The experiment produced calorimetric measurements of the detonation heat and a record of the overpressure histories which were used to determine the quasistatic pressure (QSP) in an explosion chamber after the detonation of charges from mixtures containing 30 % fuel and 70 % RDX passivated with wax. The measured heat values indicate that Al−Mg alloy is a more effective additional fuel during anaerobic post‐detonation reactions than Al and Mg separately. Silicon also exothermically reacts with the detonation products, but the released heat only compensates for the lower amount of RDX in the charge. Similar to the calorimetric measurements, the lowest value of QSP was obtained for the mixture with Si powder. In contrast to anaerobic conditions, silicon proved to be an equally effective thermobaric additive as Al, Mg, and Al−Mg powders in air explosions.

中文翻译：

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镁，镁铝合金和硅在高温炸药中的性能–与铝的比较

使用热压效应直接比较了Al，Mg，它们的合金（Al ₃ Mg ₄）和Si粉作为炸药中其他燃料的有效性。实验产生了爆炸热的量热测量和超压历史记录，用于确定准静压（QSP）。），然后在爆炸室中将含30％燃料和70％RDX的混合物（用蜡钝化）引爆炸药。测得的热值表明，在厌氧后爆轰反应中，Al-Mg合金是比Al和Mg分别更有效的附加燃料。硅也会与爆炸产物发生放热反应，但释放出的热量只能补偿装料中较少的RDX。类似于量热法，对于含硅粉末的混合物，QSP的最小值最低。与厌氧条件相反，在空气爆炸中，硅被证明是与Al，Mg和Al-Mg粉末同等有效的热压添加剂。