镁基贮氢合金是现在研究比较多也是最有应用前途的贮氢材料,其优点在于储氢容量大,重量轻,加之地球上镁和氢气的资源丰富而有广阔应用前景.研究了机械球磨对Mg-Ni-10%-G-5%镁基复合材料表面活性的影响.研究发现,通过高能球磨对该复合材料进行机械合金化,可以使材料的成分均匀化,颗粒细化,表面积增大,从而充分发挥镍的催化作用和石墨的表面活化作用.实验条件下,经 36h 机械珠磨,Mg-Ni-10%-G5%镁基复合材料的粉末平均粒径细化到1.44pμm,比表面积、表面活性增加显著.
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