Author/Authors :
Zhu، نويسنده , , M. and Zhu، نويسنده , , W.H. and Gao، نويسنده , , Y. and Che Man، نويسنده , , X.Z. and Ahn، نويسنده , , J.H.، نويسنده ,
Abstract :
In this work high energy ball milling was used to prepare nanophase composite hydrogen storage alloys in MmNi3.5(CoAlMn)1.5–Mg system. Particle size distribution analyzer, X-ray diffractomoter, SEM and TEM were used to characterize microstructure of the composite. Hydrogen absorption PCT and kinetics of the composite were measured and compared with that of melted pure MmNi3.5(CoAlMn)1.5 alloys. The effect of Mg on the microstructure and hydrogen absorption properties was obtained by investigating the composites of different Mg contents. The result showed that nanophase composites were obtained. The hydrogen absorption properties measurement proved that forming nanophase composite is an effective method for improving hydrogen absorption properties of alloys.
Keywords :
Hydrogen storage alloys , Nanocrystalline materials , mechanical alloying , Nanophase composite
