IMR OpenIR
Effect of Annealing Temperature on Hydrogen Storage Properties of LaNi3.8Al1.0Mn0.2 Alloy
Han Xingbo1,2; Yang Xiaojun3; Wang Pei3; Chen Wei1,2; Lin Zifeng1,2; Liu Guoliang1,2; Chen Demin1; Yang Ke1
Corresponding AuthorChen Demin(demin.chen.1@imr.ac.cn)
2016-04-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume45Issue:4Pages:820-827
AbstractThe 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.
Keywordhydrogen storage alloy annealing metal hydride
Funding OrganizationNational Natural Science Foundation of China ; National Basic Research Program of China
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51271176] ; National Basic Research Program of China[2010CB631305]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000375490600001
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/122148
Collection中国科学院金属研究所
Corresponding AuthorChen Demin
Affiliation1.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
Recommended Citation
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.
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