摘要
采用反应球磨法使 Ｍｇ在 ＺｒＦｅ１．４Ｃｒ０．６的催化作用下直接氢化生成纳米结构的 ＭｇＨ２和ｒ－ＭｇＨ２利用 Ｘ射线衍射及热重分析对氢化相的生成进行分析和表征．在反应球磨过程中存在动态的氢化平衡．
Magnesium could be directly hydrided into nanostructure MgH2 and 7-MgH2 under the action of catalyst ZrFel.4Cr0.6 by reaction ball milling (RBM). During certain period, the hydrogen content in the sample increases along with the grinding time, and finally reaches up to 3.5%. A dynamic hydrogenation equilibrium exists in the course of RBM. The continuous and dynamic peeling off the Mg matrix for the hydride layer, and composite of the catalytic phase, associated with the. providence of accumulated mechanical energy, are the main reasons for the hydrogenation of Mg at room temperature.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2000年第10期1118-1120,共3页
Acta Metallurgica Sinica
基金
国家自然科学基金!59671027
关键词
镁
催化相
反应球磨
直接氢化
储氢材料
Mg, catalytic phase, hydrogenation, reaction ball milling (RBM)
