Title of article :
Effect of amorphous Mg50Ni50 on hydriding and dehydriding behavior of Mg2Ni alloy
Author/Authors :
Guzmلn، نويسنده , , D. and Ordoٌez، نويسنده , , S. and Fernلndez، نويسنده , , J.F. and Sلnchez، نويسنده , , C. and Serafini، نويسنده , , D. and Rojas، نويسنده , , P.A. and Aguilar، نويسنده , , C. and Tapia، نويسنده , , P.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Abstract :
Composite Mg2Ni (25 wt.%) amorphous Mg50Ni50 was prepared by mechanical milling starting with nanocrystalline Mg2Ni and amorphous Mg50Ni50 powders, by using a SPEX 8000 D mill. The morphological and microstructural characterization of the powders was performed via scanning electron microscopy and X-ray diffraction. The hydriding characterization of the composite was performed via a solid gas reaction method in a Sievertʹs-type apparatus at 363 K under an initial hydrogen pressure of 2 MPa. The dehydriding behavior was studied by differential thermogravimetry. On the basis of the results, it is possible to conclude that amorphous Mg50Ni50 improved the hydriding and dehydriding kinetics of Mg2Ni alloy upon cycling. A tentative rationalization of experimental observations is proposed.
Keywords :
Amorphous materials , X-ray diffraction , mechanical alloying , Hydriding and dehydriding processes , Hydrogen storage materials
Journal title :
Materials Characterization
Journal title :
Materials Characterization
