کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1277030 | 1497402 | 2016 | 7 صفحه PDF | دانلود رایگان |
• Mg2Ni powders were subjected to high pressure torsion.
• Partial hydrogenation and dehydrogenation states were obtained.
• Microstructure was monitored during hydrogen cycling.
• Nanostructure is preserved during the entire hydrogenation–dehydrogenation process.
Ball-milled Mg-Ni powder has been cold-compacted and subsequently processed by severe shear deformation under high-pressure torsion. The effect of high pressure torsion on morphology and microstructure of the disk-shape samples has been characterized by scanning electron microscopy and X-ray diffraction, respectively. In order to achieve partially hydrogenated and dehydrogenated states of deformed samples, the hydrogen uptake or release was interrupted at 25%, 50% and 75% hydrogen contents in a Sieverts' type apparatus. In this paper we present the characterization of the microstructure during a full absorption-desorption cycle of the nanocrystalline Mg–Ni alloy.
Journal: International Journal of Hydrogen Energy - Volume 41, Issue 23, 22 June 2016, Pages 9803–9809