通过高能球磨工艺制备了高活性球磨镁／铝合金粉，并制备了两组镁／铝基水反应金属燃料推进剂，用固体推进剂燃速测试系统测定了其燃速。采用氧弹量热仪测定了推进剂的爆热值，并收集推进剂的一次燃烧固相产物，将其放置于水蒸汽高温管式炉中模拟二次燃烧。采用 SEM、XRD 及化学分析方法表征了水反应金属燃料的一、二次燃烧固相产物。结果表明，高活性球磨镁／铝合金水反应金属燃料推进剂具有更高的燃速和爆热值；二次燃烧产物剩余铝含量更低，二次燃烧产物反应更彻底；高活性球磨镁／铝合金能够改善其水反应金属燃料推进剂的一次燃烧效果，可提高其在二次燃烧中铝的燃烧效率。%High active ball-milling Mg-Al alloy powders were prepared by a high-energy ball-milling process from Mg-Al alloy.Two groups of Mg-Al based hydro-reactive metal fuel propellants were prepared.The burning rate of the propellant was measured by a burning rate measuring system of solid propellants.The value of heat of explosion of the propellant was measured by an oxygen bomb calorimeter and the solid products of primary combustion were collected.The secondary combustion of the solid products of primary combustion was simulated in the water vapor high temperature tube furnace.The solid products of primary combustion and secondary combustion of hydro-reac-tive metal fuel propellants were characterized by SEM,XRD and chemical analysis method.Results show that high active ball-milling Mg-Al alloy hydro-reactive metal fuel propellants have higher burning rate and heat of explosion. The residual Al content in secondary combustion products is lower and the reaction of secondary combustion product is more thorough.High active ball-milling Mg-Al alloy can improve the primary combustion effect of hydro-reactive metal fuel propellants and the combustion efficiency of Al in secondary combustion.
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