氟化物包覆对镁铝合金与水催化反应效率的影响  

Effect of Fluoride Coating on Catalytic Reaction Efficiency of Magnesium Aluminum Alloy with Water

作　　者：黄海涛[1] 谢五喜[1] 刘运飞[1] 鲍远鹏 邹美帅[2] 王传华[2] 

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]北京理工大学材料学院,北京100081

出　　处：《火炸药学报》2017年第5期73-77,共5页Chinese Journal of Explosives & Propellants

基　　金：兵器集团高校协同创新项目资助(KH2016001)

摘　　要：为了提高镁铝合金与水的反应效率,采用氟化物对镁铝合金粉进行表面包覆,利用扫描电镜、X射线衍射仪和粒度分析仪对合金粉与高温水反应产物进行表征,对比研究了高温下不同比例的氟化物对镁铝合金与水催化反应效率的影响。结果表明,包覆氟化物的镁铝合金与高温水反应产物的粒径减小,分散性明显改善;固相燃烧产物中主要包含Al_2MgO_4、MgO和Al,表明Al未完全反应;合金粉包覆氟化物后铝的反应效率明显提高,其中,包覆质量分数2%氟橡胶和2%有机氟化物的合金粉反应效率高达89.7%,与未包覆样品相比提高了14.6%。To improve the reaction efficiency of aluminum in the Al/Mg alloy with water,the surface coating of Al/Mg alloy powder was performed with fluoride.The reaction products of the alloy powders with high temperature water were characterized by scanning electron microscopy（SEM）,X-ray diffraction（XRD）and laser particle size analyzer.The effect of different proportions of fluoride on the catalytic reaction efficiency of Al/Mg alloy with water at high temperature was compared and studied.The results show that the particle size of reaction products of Al/Mg alloy coated fluorides decrease and the dispersity was obviously improved.The combustion products in solid state mainly include MgO,Al2 MgO4 and Al,meaning that Al does not react completely.The reaction efficiency of aluminum in alloy powder coating with fluorides was significantly improved,in which,the reaction efficiency of alloy powder coating with 2% Viton and 2% organic fluoride is up to 89.7%,which is 14.6% higher than that of the uncoated sample.

关 键 词：镁铝合金粉 高温水 包覆 铝的反应效率 氟化物 水反应金属燃料 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512[航空宇航科学与技术—航空宇航推进理论与工程]