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| 快淬AB5型稀土储氢合金的微结构与电化学性能 | |
| 引用本文： | 田晓,刘向东,姚占全,海山.快淬AB5型稀土储氢合金的微结构与电化学性能[J].内蒙古大学学报(自然科学版),2011,42(6):671-676. |
| 作者姓名： | 田晓 刘向东 姚占全 海山 |
| 作者单位： | 1. 内蒙古师范大学物理与电子信息学院,功能材料物理与化学自治区重点实验室,呼和浩特010022 2. 内蒙古工业大学材料科学与工程学院,呼和浩特,010051 3. 内蒙古工业大学材料科学与工程学院,呼和浩特010051;内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018 |
| 基金项目： | 内蒙古自然科学基金资助项目(2010MS0804); 内蒙古高等学校科学研究资助项目(NJZY11036); 内蒙古师范大学科研基金资助项目(ZRYB09007) |
| 摘 要： | 采用磁悬浮感应熔炼法和快淬法制备了Mm0.3Ml0.7Ni3.55Co0.75Mn0.4Al0.3稀土储氢合金,系统研究了快淬速度对合金微结构和电化学性能的影响.X射线衍射(XRD)及扫描电镜(SEM)分析表明,快淬态合金中出现了新相LaNi3和La2Ni3,且LaNi3和La2Ni3相含量随快淬速度的增大而增大.电化学性能测试表明,合金的放电特性和最大放电容量随快淬速度的增大呈现出先变好后变坏的变化规律,15m/s快淬态合金的放电特性和最大放电容量达到最佳.此外,恰当的快淬速度能明显改善合金的循环稳定性. |
| 关 键 词： | AB5型储氢合金 快淬 微结构 电化学性能 |
Microstructures and Electrochemical Properties of AB_5-type Rare Earth Hydrogen Storage Alloys Prepared by Rapid Quenching |
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| TIAN Xiao,LIU Xiang-dong,YAO Zhan-quan,Hai Shan.Microstructures and Electrochemical Properties of AB_5-type Rare Earth Hydrogen Storage Alloys Prepared by Rapid Quenching[J].Acta Scientiarum Naturalium Universitatis Neimongol,2011,42(6):671-676. | |
| Authors: | TIAN Xiao LIU Xiang-dong YAO Zhan-quan Hai Shan |
| Institution: | TIAN Xiao1,LIU Xiang-dong2,YAO Zhan-quan2,3,Hai Shan1(1.Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials,College of Physics and Electronic Information,Inner Mongolia Normal University,Hohhot 010022,China,2.School of Materials Science and Engineering,Inner Mongolia University of Technology,Hohhot 010051,3.School of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University,Hohhot 010018,China) |
| Abstract: | The as-cast and rapidly quenched Mm0.3Ml0.7Ni3.55Co0.75Mn0.4Al0.3 hydrogen storage alloys were prepared by induction melting with the magnetic levitation and rapidly quenching technique,and the effects of the quenching rate on microstructures and electrochemical properties of the alloys were investigated systematically.XRD and SEM analysis showed that the LaNi3and La2Ni3new phases appeared in quenched alloys.The content of LaNi3 and La2Ni3phases in the alloy increased with increasing quenching rate.Electroc... |
| Keywords: | AB5-type hydrogen storage alloy rapid quenching microstructure electrochemical property |
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