六盘水师范学院学报2026，Vol.38Issue(1)：26-38,13.DOI:10.16595/j.1671-055X.2026.01.003
CO2氛围下Mg对nAl着火及燃烧过程的影响
Effect of Mg on Ignition and Combustion Process of nAl in CO2 Atmosphere
摘要
Abstract
Aluminum(Al)and magnesium(Mg)are widely used in solid propellants for aerospace en-gines.However,Al readily forms alumina(Al2O3)during combustion in air,creating a film on the particle surface that severely hinders mixing between fuel particles and oxidizer,leading to incomplete combustion.In-situ resource utilization(ISRU)is considered a critical technology for space exploration programs.Uti-lizing the abundant CO2 in the Martian atmosphere as a power source for aerospace engines holds signifi-cant importance for reducing the costs of deep-space exploration.In this study,thermogravimetric analysis(TGA)and combustion experiments were conducted to investigate the thermal weight gain and combustion processes of Mg-blended nano-aluminum(nAl)mixed samples in a CO2 atmosphere;the microstructure and crystal structure of combustion products were analyzed using X-ray diffraction(XRD),scanning elec-tron microscopy(SEM),and energy-dispersive spectroscopy(EDS)to elucidate the regulatory mechanism of Mg on nAl combustion.The results showed that nAl and Mg exhibited significantly distinct combustion behaviors when burned individually.Blending 20%-30%Mg significantly improved the ignition perfor-mance of nAl,reducing its ignition delay time by 47.88%and increasing its combustion duration by 51.47%.However,Mg blending showed no significant promoting effect on the slow oxidation process of nAl.A weak synergistic effect was only observed within the temperature range of 800℃to 860℃and when the Mg blending ratio exceeded 30%,whereas mutual inhibition dominated under other conditions.Further-more,the agglomeration phenomenon of combustion products was not alleviated by Mg blending,suggest-ing that the regulatory effect of Mg on nAl combustion has inherent limitations.关键词
纳米铝/Mg/CO2氛围/掺混燃烧Key words
Nano-aluminum(nAl)/Magnesium(Mg)/CO2 atmosphere/Blended combustion分类
能源科技引用本文复制引用
周宇,魏凌刚,彭文国,马清旺,林其钊..CO2氛围下Mg对nAl着火及燃烧过程的影响[J].六盘水师范学院学报,2026,38(1):26-38,13.基金项目
国家重点研发计划"火电行业率先碳达峰关键技术标准研究"(2021YFF0601004) （2021YFF0601004）
贵州省科技厅科学技术基金"低热值煤层气掺混二甲醚扩散燃烧特性及其互换性研究"(黔科合基础-ZK[2021]一般280). （黔科合基础-ZK[2021]一般280）
