Characterization of a nanocrystalline Mg-Ni alloy processed by high-pressure torsion during hydrogenation and dehydrogenation

被引：22
作者：
Gajdics, Marcell [1 ]
Calizzi, Marco [2 ]
Pasquini, Luca [2 ]
Schafler, Erhard [3 ]
Revesz, Adam [1 ]
机构：
[1] Eotvos Lorand Univ, Dept Mat Phys, POB 32, H-1518 Budapest, Hungary
[2] Univ Bologna, Dept Phys & Astron, Alma Mater Studiorum, I-40127 Bologna, Italy
[3] Univ Vienna, Fac Phys, Phys Nanostruct Mat, A-1090 Vienna, Austria
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2016年 / 41卷 / 23期
关键词：
Hydrogen; Magnesium; Deformation; High pressure torsion; Absorption; STORAGE PROPERTIES; MICROSTRUCTURAL EVOLUTION; METAL-HYDRIDES; MAGNESIUM;
D O I：
10.1016/j.ijhydene.2015.12.224
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：9803 / 9809
页数：7
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