Effect of Ultrafine Al/B, Ti/B, and Fe/B Powders on the Ignition and Combustion Characteristics of High-Energy Materials

IF 0.9 4区工程技术 Q4 ENERGY & FUELS

Combustion, Explosion, and Shock Waves Pub Date : 2024-01-22 DOI:10.1134/s0010508223060072

I. V. Sorokin, A. G. Korotkikh

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Abstract

This paper describes a study of the ignition and combustion characteristics of a high-energy material containing ammonium perchlorate, butadiene rubber, and an ultrafine powder mixture of aluminum, titanium, or iron with amorphous boron. An experimental stand based on a CO₂ laser and a constant-pressure bomb is used to measure the ignition delay time and burning rate of the high-energy material while varying the heat flux density and the chamber pressure. It is shown that replacing amorphous boron with ultrafine Al/B, Ti/B, or Fe/B in a high-energy material reduces the heating time and the moment at which a flame appears on the propellant surface due to an increase in the reaction rate and a decrease in the oxidation temperature of these mixtures on the surface of the reaction layer. In this case, the burning rate of the high-energy materials with Me/B at excess pressures increases significantly (up to 240% for Al/B-HEM and up to 120% for Ti/B-HEM at a pressure of 5.0 MPa).

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超细 Al/B、Ti/B 和 Fe/B 粉末对高能材料点火和燃烧特性的影响

摘要本文介绍了对含有高氯酸铵、丁二烯橡胶以及铝、钛或铁与无定形硼的超细粉末混合物的高能材料的点火和燃烧特性的研究。利用基于二氧化碳激光器和恒压炸弹的实验台，在改变热通量密度和腔室压力的同时，测量高能材料的点火延迟时间和燃烧速率。结果表明，在高能材料中用超细 Al/B、Ti/B 或 Fe/B 取代无定形硼，可以缩短加热时间，并减少推进剂表面出现火焰的时刻，这是因为这些混合物在反应层表面的反应速率增加，氧化温度降低。在这种情况下，高能材料与 Me/B 在超压下的燃烧率显著增加（在 5.0 兆帕压力下，Al/B-HEM 的燃烧率可达 240%，Ti/B-HEM 的燃烧率可达 120%）。

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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来源期刊

Combustion, Explosion, and Shock Waves 工程技术-材料科学：综合

CiteScore

1.60

自引率

16.70%

发文量

审稿时长

5.7 months

期刊介绍： Combustion, Explosion, and Shock Waves a peer reviewed journal published in collaboration with the Siberian Branch of the Russian Academy of Sciences. The journal presents top-level studies in the physics and chemistry of combustion and detonation processes, structural and chemical transformation of matter in shock and detonation waves, and related phenomena. Each issue contains valuable information on initiation of detonation in condensed and gaseous phases, environmental consequences of combustion and explosion, engine and power unit combustion, production of new materials by shock and detonation waves, explosion welding, explosive compaction of powders, dynamic responses of materials and constructions, and hypervelocity impact.