曹大力,陈德敏,孙文声,吕曼祺,杨柯

• 1:沈阳化工学院材料科学与工程学院
• 2:中国科学院金属研究所

摘要(Abstract)：

采用熔体旋淬法制备了LaNi4.25Al0.75合金,用XRD、SEM及吸氢PCT曲线(压力-组成等温线)和动力学测试等方法,研究了退火处理对合金结构和储氢性能的影响。XRD测试结果表明,退火后,合金保持CaCu5结构,但晶粒变大。PCT和动力学测试结果表明,经过退火处理的合金与快淬态相比,吸氢量增加,吸氢平台变宽,吸氢速度变快。

关键词(KeyWords)： LaNi4.25Al0.75;储氢合金;熔体旋淬;退火

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50276063)

作者(Author): 曹大力,陈德敏,孙文声,吕曼祺,杨柯

DOI: 10.13289/j.issn.1009-6264.2010.03.005

参考文献(References)：

• [1]Marshall H,Mendelsohn Y,Dieter M G,et al.LaNi5-xAlx is a versatile alloy system for metal hydride applications[J].Nature,1977,269(9):45-47.
• [2]Cheng H H,Yang H G,Li S L,et al.Effect of hydrogen absorption/desorption cycling on hydrogen storage performance of LaNi4.25Al0.75[J].Journal of Alloys and Compounds,2008,453(1-2):448-452.
• [3]Kirk L,Shanahan J,Holder S.Tritium aging effects in LaNi4.25Al0.75[J].Journal of Alloys and Compounds,2003,356-357(7):382-385.
• [4]Zhang X Y,Chen Y G,Tao M D,et al.Effect of electrolyte concentration on low-temperature electrochemical properties of LaNi5alloy electrodes at233K[J].Journal of Rare Earths,2008,26(7):402-408.
• [5]Wang Z M,Chi Ying Vanessa Li,Zhou Huaiying,et al.Electrochemical hydrogen storage in LaNi4.25Al0.75alloys:A comparative study between film and powder materials[J].Materials Characterization,2008,59:468-472.
• [6]Friedlmeier G,Arakawa M,Hiria T.Preparation and structural,thermal and hydriding characteristics of melt-spun Mg-Ni alloys[J].Journal of Alloys and Compounds,1999,292(1-2):107-117.
• [7]万伟华,唐有根,卢周广.LaNi4.25Al0.75储氢合金的改性[J].中南大学学报:自然科学版,2007,38(7):107-111.WAN Wei-hua,TANG You-gen,LU Zhou-guang,et al.Modification of LaNi4.25Al0.75hydrogen storage alloys[J].Journal of Center South University:Science and Technology,2007,38(7):107-111.
• [8]大角泰章.金属氢化物的性质与应用[M].北京:化学工业出版社,1990.
• [9]王富耻.材料现代分析测试方法[M].北京:化学理工大学出版社,2006.
• [10]李守英,李全安,李克杰,等.退火对稀AB5低钴贮氢合金的影响[J].材料热处理学报,2006,27(6):32-35.LI Shou-ying,LI Quan-an,LI Ke-jie,et al.Effects of annealing treatment on the rare earth AB5based low Co hydrogen storage alloy[J].Transactions of Materials and Heat Treatment,2006,27(6):32-35.
• [11]Klug H P,Alexander L.X-ray Diffraction Procedure for Polycrystalline and Amorphous Materials[M].New York:Willey Press,1974.

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