借助扫描电镜、X- ray及吸氢性能测试装置研究了镁含量对机械合金化制备的 Mm Ni5- x ( Co Al Mn) x/Mg纳米晶复合储氢材料的性能的影响。结果表明 ,随着镁含量的增加 ,合金的活化性能表现出差 -好 -差的变化趋势。当镁含量达到50 wt%时 ,材料无法被活化。镁含量对吸氢量也有影响 ,具体表现为 ,随着镁含量的增加 ,材料的吸氢量增加。 The effect of magnesium content on the mechanical properties of Mm Ni5-x (Co Al Mn) x / Mg nanocrystalline composite hydrogen storage material prepared by mechanical alloying was investigated by means of SEM, X-ray and hydrogen absorption performance test equipment. The results show that with the increase of magnesium content, the activation performance of the alloy shows the trend of poor - good - poor. When the magnesium content reaches 50 wt%, the material can not be activated. The amount of magnesium also has an effect on the amount of hydrogen absorbed, specifically as the amount of hydrogen absorbed by the material increases as the magnesium content increases.