摘要
用PDSC、SEM、EDS和XRD研究了含Mg/Al合金粉和Al粉CMDB的热分解特性、熄火表面和固体燃烧产物组成。探讨了Mg/Al合金对燃烧机理的影响,建立了燃烧物理模型。结果表明,用等质量的Mg/Al合金粉替代Al粉,可提高推进剂的燃速、凝聚相热分解的剧烈程度和Al的燃烧效率;同时推进剂压强指数降低、凝聚相热分解放热量减少且其熄火表面上存在大直径Al熔凝颗粒团的现象消失。
The thermal decomposition performances,flameout surface characteristics and condensed combustion products of composite modified double-base propellant(CMDB) containing reactive metals such as aluminum(Al) and magnesium/aluminum(Mg/Al) mechanical alloy were investigated by pressure differential scanning calorimetry(PDSC),scanning electron microscope(SEM),energy dispersive spectrometry(EDS) and quantitative X-ray diffraction analysis(XRD).The effect of Mg/Al mechanical alloy on the combustion mechanism was discussed.The combustion physical model of propellant was established.The results show that the substitution of Mg/Al mechanical alloy in propellant for Al powder makes the burning rate increase,pressure index decrease,combustion efficiency of Al increase,thermal decomposition sensitivity enhance,decomposition enthalpy decrease and the agglomerate of Al disappear.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2012年第6期81-85,共5页
Chinese Journal of Explosives & Propellants
关键词
应用化学
Mg
AL合金
CMDB推进剂
燃烧性能
燃烧效率
物理模型
applied chemistry
Mg/Al mechanical alloy
composite modified double-base propellant
combustion characteristics
combustion efficiency
physical model
