快速固化的Mg-Ni-RE合金及其纳米结晶和氢气存储

Rapidly-solidified Mg-Ni-RE Alloys and Their Nanocrystallization and Hydrogen Storage

介绍了快速固化的镁基Mg-Ni-RE(RE=Y,Mm)合金内的氢气存储。指出快速固化即淬火状态的合金可通过将非晶态相或者由平均粒径为3nm的纳米晶体组成的纳米/非晶态相埋置在大量的非晶态相中而获得,并将Mg76Ni19Y5和Mg78Ni18Y4两种合金的氢化性能(储氢能力和氢化动力学)与Mg75Ni20Mm5(Mm为Ce和富La的混合稀土)的氢化性能做了对比。

Study is made of hydrogen storage in rapidly-solidified Mg-based Mg-Ni-RE(RE=Y,Mm) alloys.The as-quenched alloys were amorphous or nano-/amorphous,consisting of nanocrystals(with average size of 3 nm) embedded in large amounts of amorphous phase.The hydrogenation properties (hydrogen storage capacity and hydrogenation kinectics) of Mg_(76)Ni_(19)Y_5 and Mg_(18)Ni_(78)Y_4 alloys were compared with those of Mg_(75)Ni_(20)Mm_5(Mm=Ce, La-rich mischmetal).