| 快凝对MmNi5-x(CoMn)x合金电化学性能的影响 |
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| 引用本文： | 张艳红,王培培,王仲民,倪成员,颜瑞.快凝对MmNi5-x(CoMn)x合金电化学性能的影响[J].桂林电子科技大学学报,2011,31(2):168-172. |
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| 作者姓名： | 张艳红 王培培 王仲民 倪成员 颜瑞 |
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| 作者单位： | 桂林电子科技大学材料科学与工程学院; |
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| 基金项目： | 国家自然科学基金(50961004); 广西人才专项基金(2007230) |
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| 摘 要： | 利用熔体淬冷法制备出不同速度下的4种合金薄带,研究了快凝对贮氢合金电化学性能的影响.合金的晶体结构采用XRD和SEM进行表征.结果显示,铸态和快凝合金都是单一的CaCu5相结构,快凝后的合金组织变得更加细密,晶粒变小而且更加均匀.电化学实验结果表明,快凝显著提高了合金的稳定性,但是降低了合金的放电容量和高倍率性能,铸态...
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| 关 键 词： | 晶体结构 快凝 快凝速率 电化学性能 |
Effect of melt-spinning on electrochemical performance of the MmNi_(5-x)(CoMn)_x hydrogen storage alloys |
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| Zhang Yanhong,Wang Peipei,Wang Zhongmin,Ni Chengyuan,Yan Rui.Effect of melt-spinning on electrochemical performance of the MmNi_(5-x)(CoMn)_x hydrogen storage alloys[J].Journal of Guilin Institute of Electronic Technology,2011,31(2):168-172. |
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| Authors: | Zhang Yanhong Wang Peipei Wang Zhongmin Ni Chengyuan Yan Rui |
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| Affiliation: | Zhang Yanhong,Wang Peipei,Wang Zhongmin,Ni Chengyuan,Yan Rui (School of Material Science and Engineering,Guilin University of Electronic Technology,Guilin 541004,China) |
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| Abstract: | The structural and electrochemical properties of the as-cast and melt-spun MmNi5-x(CoMn)x alloys were prepared and investigated.Crystal structure of alloys was characterized by XRD and SEM.The results indicated that as-cast and all the spun alloys have the same phase of CaCu5 structure,but the melt-spun alloys showed a homogenous structure of fine columnar grains instead of the loose structure with many defects in the large grains as observed in the as-cast alloy.The electrochemical measurements showed that... |
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| Keywords: | crystal structure melt-spun spinning rate electrochemical performance |
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