New FCC Mg-Zr and Mg-Zr-ti deuterides obtained by reactive milling

被引：6

作者：

Guzik, Matylda N. ^{[1
]}

Deledda, Stefano ^{[1
]}

Sorby, Magnus H. ^{[1
]}

Yartys, Volodymyr A. ^{[1
]}

Hauback, Bjorn C. ^{[1
]}

机构：

[1] Inst Energy Technol, NO-2027 Kjeller, Norway

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2015年 / 226卷

关键词：

Hydrogen storage; Mechanical alloying; Reactive milling; Metal hydrides; Powder X-ray; Neutron diffraction; HYDROGEN STORAGE PROPERTIES; DESORPTION PROPERTIES; TRANSITION-METALS; TITANIUM HYDRIDE; PRESSURE METHOD; MAGNESIUM; SORPTION; TEMPERATURE; NB; ABSORPTION;

D O I：

10.1016/j.jssc.2015.03.005

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Results for binary Mg-Zr and ternary Mg-Zr-Ti mixtures ball milled at room temperature under reactive deuterium atmosphere (5.6-6.7 MPa) are reported. X-ray and neutron powder diffraction combined with Rietveld refinements show that two new cubic phases were formed during milling. Mg0.40Zr0.60D1.78 and Mg0.40Zr0.26Ti0.34D1.98 crystallize with disordered face centered cubic metal atom arrangements. Results of differential scanning calorimetry and termogravimetric measurements demonstrate that both deuterides desorb deuterium at lower temperatures than MgD2, ZrD2 or TiD2; 528 and 575 K in the Mg-Zr-D and Mg-Zr-Ti-D system, respectively. Interestingly, Mg0.40Zr0.26Ti0.34D1.98 stores deuterium reversibly at 673 K and 10 MPa of D-2. (C) 2015 Elsevier Inc. All rights reserved.

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页码：237 / 242

页数：6

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