Effect of Annealing Temperature on Hydrogen Storage Properties of LaNi3.8Al1.0Mn0.2 Alloy

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	Effect of Annealing Temperature on Hydrogen Storage Properties of LaNi3.8Al1.0Mn0.2 Alloy
	Han Xingbo 1,2; Yang Xiaojun 3; Wang Pei 3; Chen Wei 1,2; Lin Zifeng 1,2; Liu Guoliang 1,2; Chen Demin 1; Yang Ke 1
刊名	RARE METAL MATERIALS AND ENGINEERING
	2016-04-01
卷号	45 期号:4 页码:820-827
关键词	hydrogen storage alloy annealing metal hydride
ISSN号	1002-185X
通讯作者	Chen Demin(demin.chen.1@imr.ac.cn)
英文摘要	The LaNi3.8Al1.0Mn0.2 hydrogen storage alloy annealed at different temperatures (T=1173, 1223, 1273, 1323 K) was investigated to examine the effect of annealing temperature on the crystal structure, the activation and the hydrogen absorption/desorption performance. It is found that the non-CaCu5 phases becomes tinier and more dispersive after annealing. All the alloys consist of the same matrix phase with CaCu5 type structure. Although it is more difficult to activate the annealed alloy than the as-cast alloy, the activation becomes easier with the increase of annealing temperature for the annealed alloy. The plateau pressure decreases at first with the increase of annealing temperature, when T <= 1223 K and then increases. Changes in both the lattice strain and the pressure plateau slope factor of Sf in the alloys show the same trends with that of the annealing temperature, exhibiting a maximum at T=1223 K. It is also found that the absolute value of the enthalpy increases with the increase of annealing temperature, when T <= 1223 K and then decreases, showing the same change trend as that of the cell volume. Moreover, the pulverization resistance and kinetics of the alloy are improved by annealing. The pulverization resistance is weakened at first with the increase of annealing temperature when T <= 1223 K and then increases, but the kinetics of the alloy is almost not influenced by the annealing temperature.
资助项目	National Natural Science Foundation of China[51271176] ; National Basic Research Program of China[2010CB631305]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000375490600001
资助机构	National Natural Science Foundation of China ; National Basic Research Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/122147]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen Demin
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Natl Nucl Corp, Ltd 404, Lanzhou 732850, Peoples R China
推荐引用方式 GB/T 7714	Han Xingbo,Yang Xiaojun,Wang Pei,et al. Effect of Annealing Temperature on Hydrogen Storage Properties of LaNi3.8Al1.0Mn0.2 Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2016,45(4):820-827.
APA	Han Xingbo.,Yang Xiaojun.,Wang Pei.,Chen Wei.,Lin Zifeng.,...&Yang Ke.(2016).Effect of Annealing Temperature on Hydrogen Storage Properties of LaNi3.8Al1.0Mn0.2 Alloy.RARE METAL MATERIALS AND ENGINEERING,45(4),820-827.
MLA	Han Xingbo,et al."Effect of Annealing Temperature on Hydrogen Storage Properties of LaNi3.8Al1.0Mn0.2 Alloy".RARE METAL MATERIALS AND ENGINEERING 45.4(2016):820-827.