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运用Ｘ射线衍射、扫描电镜及粒度分析等方法表征了机械合金化制备Ｍｇ／ＭｍＮｉ５ － ｘ（ＣｏＡｌＭｎ）ｘ复合储氢合金的结构，通过ＰＣＴ曲线研究了其储氢性能。结果表明，在适当的球磨条件下能够获得纳米晶结构的Ｍｇ／ＭｍＮｉ５－ ｘ（ＣｏＡｌＭｎ） ｘ 复合储氢合金，与ＭｍＮｉ５－ ｘ（ＣｏＡｌＭｎ）ｘ 合金相比，复合储氢合金的活化性能及储氢量有明显提高。此外，还考察了Ｍｇ 含量对复合储氢合金的组织结构及储氢性能的影响。
The structure of Mg / MmNi5 - x (CoAlMn) x composite hydrogen storage alloy prepared by mechanical alloying was characterized by X - ray diffraction, scanning electron microscopy and particle size analysis. The hydrogen storage properties were studied by PCT curve. The results show that the nanocomposite Mg / MmNi5-x (CoAlMn) x hydrogen storage alloy can be obtained under appropriate ball milling conditions. Compared with MmNi5-x (CoAlMn) x alloy, Hydrogen has been significantly improved. In addition, the effect of Mg content on the microstructure and hydrogen storage properties of the composite hydrogen storage alloy was also investigated.