摘要
利用高能球磨法,制备了Al/CuO复合物,结合扫描电镜(SEM)、粒径分析仪、X射线衍射(XRD)等分析测试手段观察了Al/CuO复合物的相结构和组织形貌,同时采用热失重-差热分析仪(TG-DSC),对其热性能进行了系统的研究。结果表明,Al/CuO复合物呈片状,颗粒粒径变大,但晶粒细化至微米级。球磨制备的Al/CuO复合物与空气的热反应性能得到显著提高,且在3h制备条件时最优。其增重率和铝反应率分别提高到74.33%和92.91%,最大放热热流率提高了53W/g,热反应焓变增加到3095.62J/g,活化能仅为202.7kJ/mol。在含能材料中具有很重要的应用价值。
Al/CuO composite was fabricated by high-energy ball milling.Phase structure and morphology were inspected using scanning electron microscopy （SEM）, particle size analyzer, X-ray diffraction （XPtD）, and thermal properties were investigated by thermogravimetry-differential scanning calorimetry （TG-DSC）.The results show that microscopic morphology of Al/CuO composite is sheet, particle size increases while grain size is refined into micrometer scale.Moreover,thermal properties of Al/CuO composite reacted with air are significantly improved,and reach a peak value when Al/CuO was milled for 3 h.The weight increase of Al/CuO composite and reactivity of Al is up to 74.33% and 92.91% ,respectively.The maximum heat flow rate （ Qmax ） is increased by 53 W/ g.Al/CuO-O2 system exhibits an intense exothermic peak with reaction heat of 3 095.62 J/g.Finally, A low activation energy merely with 202.7 kJ/mol can be obtained, Which shows important values in the application of energetic materials.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2016年第6期784-788,796,共6页
Journal of Solid Rocket Technology
基金
国防086专项(00401020201-1)
