摘要
高活性纳米金属粉具有热值高、密度大、点火和燃烧性能良好的优点,对提高固体推进剂的能量性能及燃烧性能具有非常重要的作用。采用SEM、EDS、XRD等手段对高活性金属粉进行了结构表征,采用静电火花感度评价方法研究了不同粒径Al和Zr对静电火花刺激响应特性,分析了不同金属形貌对静电火花刺激的响应特性,探讨了粒度对金属粉的静电火花感度的影响。结果表明,较之Al粉,Zr对静电刺激更为敏感,50%发火能仅为5.13 mJ;球形颗粒的金属粉较不规则形貌颗粒具有较低的发火能量,而随着纳米金属粒径的增大,其对静电火花刺激敏感程度呈下降趋势。研究成果为促进Al和Zr粉在固体推进剂中的安全使用提供了技术参考。
High reactive nanometer metals are of interest as an energetic material for its good combustion performance and high density,which afford the opportunity to use nanometer metals as fuel in solid propellants.The surface morphologies,structures and electrostatic properties of highly reactive nanometer metals were characterized by scanning electron microscope(SEM),energy dis persive spectrometer(EDS),X ray diffraction(XRD)and the electrostatic discharge sensitivity(ESD)instruments.The effects of metals(Al and Zr)granularity and morphologies on electrostatic characteristics are evaluated and discussed.The results show that compared with Al powder,Zr is more sensitive to electrostatic stimulation and the 50%firing energy(E50)of Zr is just 5.13 mJ.Spherical particle has lower electrostatic ignition energy than irregular particle,and the electrostatic ignition energy of metals gradu ally decreases with the increase of the particle size.This work provides technology support for their safety application in solid propel lants.
作者
姜菡雨
姚二岗
裴庆
徐司雨
李恒
李猛
JIANG Hanyu;YAO Ergang;PEI Qing;XU Siyu;LI Heng;LI Meng(Xi'an Modern Chemistry Research Institute,Xi'an 710065,China)
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2020年第1期101-106,共6页
Journal of Solid Rocket Technology
基金
国家自然科学基金(21473130)
陕西省科协企业创新争先青年人才托举计划项目
关键词
高活性金属粉
静电火花
发火能
粒径
high reactive nanometer metals
electronic spark
ignition energy
granularity
