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Fundamental investigation on the micro-explosion of aluminum-lithium alloy particle

文献类型：期刊论文

作者Zhou, Yintao3; Mao, Qian3; Ing, N. G. Shao; Chu, Qingzhao2; Liao LJ(廖丽涓)1; Shi, Baolu3
刊名COMBUSTION AND FLAME
出版日期2025-04-01
卷号274页码:12
关键词Al-Li alloy particle High-pressure combustion Molecular dynamics simulation Micro-explosion
ISSN号0010-2180
DOI10.1016/j.combustflame.2025.113983
通讯作者Mao, Qian(maoqian@bit.edu.cn) ; Liao, Lijuan(liaohuanxin@hotmail.com)
英文摘要The aluminum-lithium (Al-Li) alloy particle is considered to be a promising alternative for conventional aluminum particles to enhance energy release in solid propellants, owing to its tendency to undergo micro- explosions during combustion processes. In this study, both laser-induced ignition/combustion experiments and reactive molecular dynamics (RMD) simulations were performed to comprehensively capture the complete micro-explosion sequence of Al-Li alloy particles under a high-pressure oxygen condition. In combustion experiments, higher heating rates and Li concentrations effectively increase the probability of micro-explosions and shorten both the ignition delay time and the combustion time of Al-Li alloy particles. Meanwhile, RMD results reveal the micro-explosion mechanism from atomic scale, highlighting that the aggregation, melting, boiling and growth of Li cluster are the prerequisites for micro-explosion. The competition of stresses in the outer shell and inner Li cluster determine the micro-explosion phenomenon. In addition, influences of heating rates and Li concentrations on the micro-explosion were well clarified and their dependence was summarized. A high heating rate provides more energy to atoms within the Al-Li alloy particle through reactions and collisions, thereby shortening the duration of the atomic diffusion stage before micro-explosion. Furthermore, a high Li concentration enhances the expansion stress of the Li cluster to shorten the cluster growth stage. This systematic study establishes a fundamental understanding of the intricate mechanisms governing the micro-explosion of Al-Li alloy particles, offering potential insights for guiding practical applications.
分类号一类/力学重要期刊
WOS关键词REACTIVE FORCE-FIELD ; COMBUSTION CHARACTERISTICS ; SOLID-PROPELLANTS ; IGNITION ; AGGLOMERATION ; TEMPERATURE ; REAXFF ; SIZE ; NANOPARTICLES ; PERFORMANCE
资助项目National Talent Program of the National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China[U20B200266] ; Startup Fund of Beijing Institute of Technology
WOS研究方向Thermodynamics ; Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:001408580900001
资助机构National Talent Program of the National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China ; Startup Fund of Beijing Institute of Technology
其他责任者Mao, Qian ; Liao, Lijuan
源URL[http://dspace.imech.ac.cn/handle/311007/98261]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China
2.Beijing Inst Technol, State Key Lab Explos Sci & Technol, 5 Zhongguancun South St, Beijing 100081, Peoples R China;
3.Beijing Inst Technol, Sch Aerosp Engn, 5 Zhongguancun South St, Beijing 100081, Peoples R China;
推荐引用方式
GB/T 7714		 Zhou, Yintao,Mao, Qian,Ing, N. G. Shao,et al. Fundamental investigation on the micro-explosion of aluminum-lithium alloy particle[J]. COMBUSTION AND FLAME,2025,274:12.
APA Zhou, Yintao,Mao, Qian,Ing, N. G. Shao,Chu, Qingzhao,廖丽涓,&Shi, Baolu.(2025).Fundamental investigation on the micro-explosion of aluminum-lithium alloy particle.COMBUSTION AND FLAME,274,12.
MLA Zhou, Yintao,et al."Fundamental investigation on the micro-explosion of aluminum-lithium alloy particle".COMBUSTION AND FLAME 274(2025):12.

入库方式： OAI收割

来源：力学研究所

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