On the amorphization behavior and hydrogenation performance of high-energy ball-milled Mg2Ni alloys

摘要: Abstract Amorphous Mg 2 Ni alloy was prepared by high energy ball-milling starting with polycrystalline which the help of a metallurgy method using SPEX 8000D mill. The microstructural and phase structure characterization materials performed via scanning electron microscopy, transition microscope X-ray diffraction. thermal stabilities were investigated differential calorimetry. apparent activation energies determined means Kissinger method. first second crystallization reactions take place at ~ 255 °C ~ 410 °C, corresponding is E a1  = 276.9 a2  = 382.4 kJ/mol, respectively. At 3 MPa hydrogen pressure 250 °C, absorption capacities crystalline, partially fully amorphous are 2.0 wt.%, 3.2 wt.% 3.5 wt.% within 30 min,