摘要
基于定容燃烧系统,通过对比火焰结构,燃烧室内温度和动态压力的变化,以及对燃烧产物显微结构及组分分析,研究了不同压力对纳米铝粉燃烧性能的影响。结果表明,纳米铝粉和空气反应生成复杂的氧化铝、氮化铝多型体,随着压力的增大,反应速率不断增大,峰值压力升高,且达到峰值压力的时间缩短,但总放热量大致相同。
Based on the constant volume combustion system, through contrasting the flame structure, the changes of temperature and dynamic pressure in combustion chamber, and analyzing the micro-structures and ingredients of the combustion products, the influence of different pressures on the combustion performance of nano-Al powder was investigated. The results show that the nano-Al powder reacts with air to produce complex alumina and aluminum nitride polytype, as increase of pressure, the reaction rate continuously increases, the peak pressure rises, and the time to reach the peak pressure decreases. However, the total releasing heat is approximately same.
出处
《化学推进剂与高分子材料》
CAS
2015年第3期53-58,62,共7页
Chemical Propellants & Polymeric Materials
基金
国家自然科学基金(51376116)
上海航天技术研究院–上海交大航天先进技术联合研究中心资助项目
航天基金
关键词
定容燃烧系统
纳米铝粉
初始压力
燃烧性能
constant volume combustion system
nano aluminum powder
initial pressure
combustion performance
