Opto-mechanical characterization of hydrogen storage properties of Mg-Ni thin film composition spreads

被引：32
作者：
Ludwig, A. [1 ,2 ]
Cao, J. [1 ]
Dam, B. [3 ]
Gremaud, R. [3 ]
机构：
[1] Combinat Mat Sci Grp, Ctr Adv European Studies & Res Caeser, D-53175 Bonn, Germany
[2] Ruhr Univ Bochum, Fac Mech Engn, Inst Mat, D-44780 Bochum, Germany
[3] Vrije Univ Amsterdam, Condensed Matter Phys, Amsterdam, Netherlands
来源：
APPLIED SURFACE SCIENCE | 2007年 / 254卷 / 03期
关键词：
Mg-Ni; thin films; hydrogen storage; high-throughput characterization;
D O I：
10.1016/j.apsusc.2007.05.093
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：
Thin film composition spreads of Mg-Ni were deposited by co-sputtering on micromachined Si-cantilevers. The investigated compositions range from about Mg(60)Ni(40) to about Mg(80)Ni(20). Structural properties as well as mechanical stress before and after hydrogenation were measured with X-ray diffraction (XRD) and laser profilometry, respectively. The composition spreads were hydrogenated in a special pressure vessel, which allows measuring optically the hydrogen-induced deflection (stress-change) of 16 cantilevers as a function of hydrogen pressure and/or temperature. It was found that the hydrogen-induced stress is correlated with the composition and microstructure of the films. Highest hydrogen-induced stress changes were found for compositions close to the crystalline Mg(2)Ni phase. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：682 / 686
页数：5
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