火炸药学报2026，Vol.49Issue(5)：524-531,8.DOI:10.14077/j.issn.1007-7812.202512016
硼与碳化硼单颗粒在高压空气中的燃烧特性
Combustion Characteristics of Boron and Boron Carbide Single Particles in High-Pressure Air
摘要
Abstract
To elucidate the combustion mechanism of boron-based fuels under high-pressure conditions,the comparative study on the combustion characteristics of B and B4C particles was conducted in the air at 7 MPa using a self-developed laser-induced single-particle ignition and combustion experimental platform.The system integrates high-speed imaging,spectroscopic diag-nostics,and three-color pyrometry,enabling synchronous acquisition of key parameters,including flame morphology evolution,characteristic emission spectra,combustion temperature,and ignition delay time.The results show that B particles ignite rapid-ly and form a stable gas-phase diffusion flame,with an ignition delay time only 16％of that of B4C,accompanied by strong BO2 characteristic emission during combustion.In contrast,B4C exhibits significantly delayed ignition and predominantly sur-face-controlled combustion due to the high dissociation energy of B—C bonds and mass transfer limitations imposed by the car-bon-containing molten oxide layer,resulting in weak gas-phase radiation.Although the combustion temperature of B4C can reach approximately 80％of that of B,its overall reaction intensity remains lower.Under high-pressure conditions,enhanced oxygen diffusion promotes gas-phase chain reactions of boron,whereas the presence of carbon in B4C alters the reaction path-ways,transforming nitrogen from an inhibitor into a reactive participant.These findings provide experimental evidence and mechanistic insights for the efficient utilization of boron-based fuels in high-pressure propulsion systems.关键词
物理化学/硼/碳化硼/含能材料/燃烧特性/金属燃料Key words
physical chemistry/boron/boron carbide/energetic materials/combustion characteristics/metal fuel分类
军事科技引用本文复制引用
黄厚业,刘延琦,黄雪峰,李盛姬,李辉,赵凤起..硼与碳化硼单颗粒在高压空气中的燃烧特性[J].火炸药学报,2026,49(5):524-531,8.基金项目
国家自然科学基金重大科研仪器研制项目(No.52027809) （No.52027809）
