Thermodynamics of hydrogenation for Ti1-xZrxMnCr Laves phase alloys
文献类型：期刊论文
| 作者 | M. Guo ; E. Wu |
| 刊名 | Journal of Alloys and Compounds
 |
| 出版日期 | 2008 |
| 卷号 | 455期号:1-2页码:191-196 |
| 关键词 | hydrogen storage materials Laves phase P-C isotherms thermodynamics storage properties timn2-based alloys hydride formation absorption system equilibrium pressure |
| ISSN号 | 0925-8388 |
| 中文摘要 | The thermodynamics of hydrogenation for the Ti1-xZrxMnCr (x = 0, 0.1, 0.2, 0.32, 0.5, 0.7, 0.9, 1.0) alloys, which are characterized by the XRD Rietveld analysis as C14-type Laves phase, are evaluated by P-C isotherms measurements at different temperatures. Along with the increase of Zr content in the alloys, the pressure of the absorption/desorption plateau decreases monotonously; the average value of vertical bar Delta H vertical bar increases linearly, and the average value of vertical bar Delta S vertical bar decreases slightly; on the other hand, the hysteresis of hydrogenation reduces to a minimum at x = 0.32, and then rises again; the slope of the plateau increases first, then decreases, forming a maximum at x = 0.5. For the hydride formation of the Ti1-xZrxMnCr alloys, the values of vertical bar Delta H vertical bar and vertical bar Delta S vertical bar increase with the hydrogen concentration, except for that of the Ti0.8Zr0.2MnCr, where an opposite trend occurs, but all the vertical bar Delta H vertical bar values in the Ti1-xZrxMnCr-H-2 system are considerably lower than those in most Laves phase hydride systems. As combined effects of these trends, the Ti0.5Zr0.5MnCr alloy with the highest microstrain induced from the greatest mismatch of different atoms in the lattice, possesses the greatest plateau slope and the smallest variation width of vertical bar Delta H vertical bar for the hydride formation; on the other hand, the Ti0.68Zr0.32MnCr alloy exhibits the best hydrogen storage properties, with a reversible hydrogen capacity of 216 ml/g, and good plateau characteristics. (c) 2007 Published by Elsevier B.V. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32783]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | M. Guo,E. Wu. Thermodynamics of hydrogenation for Ti1-xZrxMnCr Laves phase alloys[J]. Journal of Alloys and Compounds,2008,455(1-2):191-196. |
| APA | M. Guo,&E. Wu.(2008).Thermodynamics of hydrogenation for Ti1-xZrxMnCr Laves phase alloys.Journal of Alloys and Compounds,455(1-2),191-196. |
| MLA | M. Guo,et al."Thermodynamics of hydrogenation for Ti1-xZrxMnCr Laves phase alloys".Journal of Alloys and Compounds 455.1-2(2008):191-196. |
入库方式： OAI收割
来源：金属研究所
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