| 制备工艺对La_(0.80)Mg_(0.20)Ni_(3.75)合金电极性能的影响 |
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| 引用本文： | 董小平,杨丽颖,林玉芳,张羊换,王新林.制备工艺对La_(0.80)Mg_(0.20)Ni_(3.75)合金电极性能的影响[J].稀有金属与硬质合金,2010,38(1). |
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| 作者姓名： | 董小平 杨丽颖 林玉芳 张羊换 王新林 |
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| 作者单位： | 1. 河北大学质量技术监督学院,河北,保定,071002
2. 钢铁研究总院功能材料研究所,北京,100081 |
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| 基金项目： | 国家自然科学基金项目，国家"863"计划项目，河北大学博士基金项目 |
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| 摘 要： | 采用中频感应真空熔炼(IM)和放电等离子烧结(SPS)工艺制备La0.80Mg0.20Ni3.75合金。XRD分析表明,这两种工艺制备的合金均含有LaNi5和(La,Mg)2Ni7主相,而中频感应真空熔炼法制备的合金(IMLa合金)还含有(La,Mg)Ni3相,放电等离子烧结法制备的合金(SPSLa合金)还含有Ni及La2Mg17相。电化学性能测试结果表明,作为镍氢电池负极材料,IMLa合金的放电容量、损耗角及极限电流密度均较大;而SPSLa合金的循环性能较好,这归因于SPSLa合金晶粒细小,组织均匀,Ni和La2Mg17相弥散分布,可减弱其电极脱落程度。
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| 关 键 词： | 电极性能 中频感应真空熔炼 放电等离子烧结 |
Influence of Preparation Technology on the Performance of La_(0.80)Mg_(0.20)Ni_(3.75) Alloy Electrode |
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| DONG Xiao-ping,YANG Li-ying,LIN Yu-fang,ZHANG Yang-huan,WANG Xin-lin.Influence of Preparation Technology on the Performance of La_(0.80)Mg_(0.20)Ni_(3.75) Alloy Electrode[J].Rare Metals and Cemented Carbides,2010,38(1). |
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| Authors: | DONG Xiao-ping YANG Li-ying LIN Yu-fang ZHANG Yang-huan WANG Xin-lin |
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| Affiliation: | DONG Xiao-ping1,YANG Li-ying1,LIN Yu-fang2,ZHANG Yang-huan2,WANG Xin-lin2 (1.College of Quality , Technical Supervision,Hebei University,Baoding 071002,China,2.Department of Functional Material Research,Central Iron , Steel Research Institute,Beijing 100081,China) |
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| Abstract: | La0.80Mg0.20Ni3.75 alloy was prepared by intermediate frequency induction vacuum melting(IM) or spark plasma sintering(SPS).The results from XRD show that both the alloys prepared by the two technologies contain the main phases of LaNi5 and(La,Mg)2Ni7.In addition,the alloy from IM technology(IMLa alloy) contains(La,Mg)Ni3 phase,and the alloy from SPS technology(SPSLa alloy) contains Ni and La2Mg17 phases.The results of electrochemical performance test indicate that IMLa alloy is of higher discharge capacity... |
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| Keywords: | La_(0 80)Mg_(0 20)Ni_(3 75) La_(0 80)Mg_(0 20)Ni_(3 75) electrode performance intermediate frequency induction vacuum melting spark plasma |
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