含能材料2025，Vol.33Issue(3)：246-255,10.DOI:10.11943/CJEM2024100
三元活性金属燃料Al/B/Mg和Al/B/MgH2的燃烧特性
Combustion Characteristics of Ternary Reactive Metal Fuels Al/B/Mg and Al/B/MgH2
摘要
Abstract
To investigate the combustion characteristics of ternary active metal fuels Al/B/Mg(ABM)and Al/B/MgH2(ABM-H),the heat of combustion and minimum ignition energy were studied by using an oxygen bomb calorimeter and a Hartmann tube,respectively.The sub-transient process of flame propagation and the spatiotemporal distribution characteristics of temperature fields were determined by using a high-speed camera system and a high-speed infrared camera system.The results indicate that the calorific values of ABM and ABM-H are 34.1 and 32.2 MJ·kg-1,respectively,exhibiting increases of 14.4%and 8.1%over pure Al(29.8 MJ·kg-1).The minimum ignition energies of ABM,ABM-H,and Al are 160-170,100-110,and 20-30 mJ,re-spectively.Compared to pure Al,the combustion duration of ABM and ABM-H increase by 65.5%,34.5%and the peak flame propagation velocities increase by 12.6%,23.0%,respectively,at a mass concentration of 625 g·m-3.At a mass concentration of 500 g·m-3,ABM-H and ABM exhibit the largest peak flame propagation velocities by 45.05,38.7 m·s-1,and the maximum temperatures peak of flame surface by 1856,1717℃,respectively,where ABM-H shows a 7.6%improvement on temperatures peak of flame surface and a faster heating-rate compared to ABM.It suggests that the ABM and ABM-H formulations significantly reduce the explosion risk of the dust/air mixture,and significantly improving the combustion performance.ABM demonstrates su-perior thermal effects in calorific value and duration of combustion,whereas ABM-H exhibits higher reactivity in terms of mini-mum ignition energy,flame propagation speed,and temperature rise rate.关键词
三元活性金属燃料/最小点火能/火焰传播特性/温度场分布Key words
ternary reactive metallic fuels/minimum ignition energy/flame propagation characteristics/temperature field distribu-tion分类
军事科技引用本文复制引用
程志鹏,夏语,罗一民,马腾,徐飞扬,张宇,吴星亮,徐森..三元活性金属燃料Al/B/Mg和Al/B/MgH2的燃烧特性[J].含能材料,2025,33(3):246-255,10.基金项目
国家自然科学基金(12272184) National Natural Science Foundation of China(No.12272184) （12272184）
