【摘要】 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机械球磨,Mg-Ni-10%-G-5%镁基复合材料的粉末平均粒径细化到1.44μm,比表面积、表面活性增加显著。更多还原

【Abstract】 The magnesium-based hydrogen storage alloy is one of the most prospective hydrogen storage materials due to its high cell volume,light weight,etc.,and plus that the magnesium and hydrogen gas are abundant in the world.In this paper,the effect of mechanical milling on the surface activity of Mg-Ni-10%-G-5%magnesium matrix composite is investigated.The result shows that high-energy ball milling can uniform the material components,refine the particle,increase the surface area and can better perform the catalysis of Ni and surface activity of graphite.After mechanical milling for 36 hours,the powder grain is about 1.44μm,and the specific surface area and surface activity increase greatly.更多还原