| 退火方式对La_(0.75)Mg_(0.25)Ni_(3.44)Co_(0.2)Al_(0.03)Ti_(0.03)合金的电化学性能影响 |
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| 引用本文： | 董小平,杨丽颖,李小亭,马力辉,林玉芳,赵栋梁.退火方式对La_(0.75)Mg_(0.25)Ni_(3.44)Co_(0.2)Al_(0.03)Ti_(0.03)合金的电化学性能影响[J].材料热处理学报,2010,31(1). |
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| 作者姓名： | 董小平 杨丽颖 李小亭 马力辉 林玉芳 赵栋梁 |
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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“863"计划(2007AA03Z230,2007AA03Z227);;河北大学博士基金(2009-152) |
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| 摘 要： | 为了研究不同退火方式对La0.75Mg0.25Ni3.44Co0.2Al0.03Ti0.03铸态合金的电化学性能影响,设计最终退火温度为1223K,并采用不同保温程序对合金进行退火处理。X射线衍射(XRD)与扫描电镜(SEM)分析一段、两段保温法退火后合金的结构与性能结果表明,铸态及退火后合金由LaNi5,(La,Mg)2(Ni,Co,Al)7相以及少量LaNi2、TiNi3相组成,且退火后合金中(La,Mg)(Ni,Co,Al)3相出现。前者微观组织较后者均匀,并且前者的放电容量、放电效率好于后者。一段保温法更有利于改善合金的循环稳定性。
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| 关 键 词： | 退火方式 保温程序 微观组织 电化学性能 |
Influence of annealing way on electrochemical property of La_(0.75)Mg_(0.25)Ni_(3.44)Co_(0.2)Al_(0.03)Ti_(0.03) |
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| DONG Xiao-ping,YANG Li-ying,LI Xiao-ting,MA Li-hui,LIN Yu-fang,ZHAO Dong-liang.Influence of annealing way on electrochemical property of La_(0.75)Mg_(0.25)Ni_(3.44)Co_(0.2)Al_(0.03)Ti_(0.03)[J].Transactions of Materials and Heat Treatment,2010,31(1). |
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| Authors: | DONG Xiao-ping YANG Li-ying LI Xiao-ting MA Li-hui LIN Yu-fang ZHAO Dong-liang |
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| Affiliation: | 1.College of Quality and Technical Supervision;Hebei University;Baoding;071002;China;2.Department of Functional Material Research;Central Iron and Steel Research Institute;Beijing 100081;China |
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| Abstract: | In order to investigate the effect of different annealing way on electrochemical property of the as-cast La_(0.75)Mg_(0.25)Ni_(3.44)Co_(0.2)Al_(0.03)Ti_(0.03) alloy,the alloy was annealed at 1223K by one-step and two-step holding temperature process,respectively.The microstructure and property of the annealed alloy were examined by XRD and SEM.The results show that the microstructue of the as-cast alloy is composed of LaNi_5,(La,Mg)_2(Ni,Co,Al)_7 phase and a small amount of LaNi_2,TiNi_3 phases.After anneal... |
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| Keywords: | annealing way holding temperature process microstructure electrochemical property |
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