Hydrogen storage of melt-spun amorphous Mg65Ni20Cu5Y10 alloy deformed by high-pressure torsion

被引：42

作者：

Revesz, A. ^{[1
]}

Kis-Toth, A. ^{[1
]}

Varga, L. K. ^{[2
]}

Schafler, E. ^{[3
]}

Bakonyi, I. ^{[2
]}

Spassov, T. ^{[4
]}

机构：

[1] Eotvos Lorand Univ, Dept Mat Phys, H-1518 Budapest, Hungary

[2] Hungarian Acad Sci, Res Inst Solid State Phys & Opt, H-1525 Budapest, Hungary

[3] Univ Vienna, Fac Phys, A-1090 Vienna, Austria

[4] Univ Sofia St Kl Ohridski, Dept Chem, Sofia 1164, Bulgaria

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2012年 / 37卷 / 07期

基金：

匈牙利科学研究基金会;

关键词：

H-storage; Mg-based alloys; High-pressure torsion; Deformation; X-RAY-DIFFRACTION; PARTICLE-SIZE; MG; MICROSTRUCTURE; MAGNESIUM; KINETICS; NI; HYDRIDES; SORPTION; NB2O5;

D O I：

10.1016/j.ijhydene.2011.12.160

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：

Rapidly quenched amorphous Mg65Ni20Cu5Y10 metallic glass compacts were subjected to heavy shear deformation by high-pressure torsion until different amounts of ultimate strain. High-resolution X-ray diffraction analysis and scanning electron microscopy revealed that high-pressure torsion resulted in a deformation dependent microstructure. High-pressure calorimetry measurements revealed that hydrogen uptake in the fully amorphous alloy occurs at a significantly lower temperature compared to the fully crystallized state, while the amount of absorbed hydrogen increased considerably after heavy shear deformation due to the formation of Mg2Ni crystals. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：5769 / 5776

页数：8

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