This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1016/j.jallcom.2008.05.029 in citations.
Interaction of Hydrogen with the Beta-Al3Mg2 Complex Metallic Alloy: Experimental Reliability of Theroretical Preditictions
Interaction of Hydrogen with the Beta-Al3Mg2 Complex Metallic Alloy: Experimental Reliability of Theroretical Preditictions
In this paper we report on some hydrogenation characteristics of beta-Al3Mg2. Pressure-composition-temperature (PCT) absorption curves were obtained in the temperature range 573-658 K up to 4 MPa of H-2-pressure. During the H-absorption process, (beta-Al3Mg2 disproportionates into MgH2 and the solid...
Saved in:
Personal Name(s): | Fernández, J.F. |
---|---|
Leardini, F. / Bodega, J. / Sánchez, C. / Joubert, J.M. / Cuevas, F. / Leroy, E. / Baricco, M. / Feuerbacher, M. | |
Contributing Institute: |
Mikrostrukturforschung; IFF-8 |
Published in: | Journal of alloys and compounds, 472 (2009) |
Imprint: |
Lausanne
Elsevier
2009
|
DOI: |
10.1016/j.jallcom.2008.05.029 |
Document Type: |
Journal Article |
Research Program: |
Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Journal of Alloys and Compounds
472 |
Subject (ZB): | |
Publikationsportal JuSER |
In this paper we report on some hydrogenation characteristics of beta-Al3Mg2. Pressure-composition-temperature (PCT) absorption curves were obtained in the temperature range 573-658 K up to 4 MPa of H-2-pressure. During the H-absorption process, (beta-Al3Mg2 disproportionates into MgH2 and the solid solution of Al(Mg). This reaction is reversible at the temperatures studied. The enthalpy and entropy of the reaction were determined from the Van't Hoff plot as -62(4) kJ/mol H-2 and -122(6)J/K mol H-2, respectively. A detailed analysis of the sample microstructure at several stages of the absorption and desorption processes has been carried out. The microstructure can be explained by hydrogen diffusion and the disproportionation/recombination reactions of the (3 phase. (C) 2008 Elsevier B.V. All rights reserved. |