高能球磨法制备Al/B/Fe_2O_3纳米复合含能材料  

Preparation of Al/B/Fe_2O_3 nano-composite energetic materials by high energy ball milling

作　　者：申连华 李国平[1] 罗运军[1] 高坤[1] 柴春鹏[1] 葛震[1] 

机构地区：[1]北京理工大学材料学院,北京100081

出　　处：《固体火箭技术》2014年第2期233-237,共5页Journal of Solid Rocket Technology

基　　金：总装预研项目(51328050211)

摘　　要：为了减少无定形硼粉表面的B2O3、H3BO3等杂质,以提高硼粉的燃烧效率,采用NaOH对硼粉进行了提纯;通过设计正交试验,优化了高能球磨制备Al/B复合材料工艺参数,在二元Al/B的基础上制备了Al/B/Fe2O3纳米复合含能材料,并采用XPS、SEM、XRD及TG/DSC等对其进行了表征。结果表明,提纯后表面硼元素的含量提高了15%;Al/B二元复合材料实现了纳米级复合,对其粒径的影响程度依次是球磨时间>球磨转速>混粉比>球料比,并获得了较佳的球磨参数:球磨时间12 h,球料比20∶1,转速300 r/min;制备的Al/B/Fe2O3纳米复合含能材料的宏观粒径达3.89μm,且随着硼含量的增加,复合含能材料放热量也增加。In order to reduce the acidic impurity of B2O3 and H3BO3 on the surface of amorphous boron powder and improve the efficiency in the use of boron powder, sodium hydroxide（NaOH） was firstly used to modify the amorphous boron.Then the orthogonal experiment was carried out to optimize the parameters of high energy ball milling for the formation of the Al/B composite.On the ba- sis of Al/B binary nano-eomposite ,the Al/B/Fe2O3 nano-composite energetic materials were prepared through the high energy ball milling.X-Ray Diffraction （ XRD ）, Scanning Electron Microscopy （ SEM ）, Differential scanning calorimetry, X-ray photoelectron spectroscopy were used to characterize the microstrueture of composite materials.The results show the content of boron element on the surface of boron particles is increased by 15% ,and the influencing order of parameters on the average particle diameter of the composite is as follows：milling time〉milling speed〉quantity ratio of Al to B〉weight ratio of ball to powder.And the optimal HEBM parameters are milling time 12 h, ball-to-powders ratio 20 ： 1, milling speed 300 r/min respectively.The macro-particle size of Al/ B/Fe2O3 nano-composite is 3.89 μm ,with the increasing content of the boron in the Al/B/Fe2O3 composite ,the exothermic heat al- so increases.

关 键 词：纳米复合含能材料 硼提纯 高能球磨法 正交试验 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]