Hydrogen absorption/desorption properties of MmNi(4.5)Cr(0.5-x)Zr(x) alloys

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	Hydrogen absorption/desorption properties of MmNi(4.5)Cr(0.5-x)Zr(x) alloys
	S. L. Li; W. Chen; D. M. Chen; K. Yang
	2009
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	471 期号:1-2 页码:78-82
摘要	Hydrogen absorption/desorption properties of MmNi(4.5)Cr(0.5-x)Zr(x) alloys ( x = 0, 0.05, 0.1) were investigated in the present work. The Pressure-Composition ( PC) isotherms and absorption kinetics were measured in the temperature range of 273 <= T <= 303 K by the volumetric method. XRD patterns showed that the as-annealed MmNi(4.5)Cr(0.5-x)Zr(x) alloys had CaCu(5) type hexagonal structure and could keep the same single phase after 16 cycles of absorption/desorption. It was found that with the increase of x in MmNi(4.5)Cr(0.5-x)Zr(x) alloys, the dissociation plateau pressure increased, the hysteresis was diminished, the hydrogen uptake capacity was reduced and the absorption kinetics was improved. The absorption plateau pressure increased when x was increased to 0.05, but decreased when x increased to 0.1. It was also found that the dissociation plateau pressure increased linearly with increasing cell volume V and the lattice parameter a, and the hydrogen uptake capacity decreased linearly with increasing Zr content. (c) 2008 Elsevier B.V. All rights reserved.
部门归属	[li, s. l.; chen, w.; chen, d. m.; yang, k.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [li, s. l.; chen, w.] chinese acad sci, grad sch, beijing 100049, peoples r china.;chen, dm (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;demin.chen.1@imr.ac.cn
关键词	Metal Hydride Hydrogen Absorbing Materials Gas-solid Reactions Thermodynamic Properties Absorption-desorption Characteristics Storage Properties Intermetallic Compounds Hydriding Properties Mischmetal System Ni Improvement Aluminum Mmni5
URL	查看原文
WOS记录号	WOS:000265086300031
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32032
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. L. Li,W. Chen,D. M. Chen,et al. Hydrogen absorption/desorption properties of MmNi(4.5)Cr(0.5-x)Zr(x) alloys[J]. Journal of Alloys and Compounds,2009,471(1-2):78-82.
APA	S. L. Li,W. Chen,D. M. Chen,&K. Yang.(2009).Hydrogen absorption/desorption properties of MmNi(4.5)Cr(0.5-x)Zr(x) alloys.Journal of Alloys and Compounds,471(1-2),78-82.
MLA	S. L. Li,et al."Hydrogen absorption/desorption properties of MmNi(4.5)Cr(0.5-x)Zr(x) alloys".Journal of Alloys and Compounds 471.1-2(2009):78-82.