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	Preparation and electrochemical properties of unidirectionally solidified Ml(NiCoMnTi)(5) alloys
	Lei, YQ ; Zhou, Y ; Luo, YC ; Yang, XG ; Wang, QD
	1997
关键词	unidirectional solidification mischmetal based alloy microstructure electrochemical properties HYDROGEN STORAGE ALLOYS BATTERIES
英文摘要	Mischmetal based alloy Ml(NiCoMnTi)(5) (Ml: La-rich mischmetal) was prepared by unidirectional solidification process at an ultra-high temperature gradient (around 1300 degrees C cm(-1)) and different growth rates (48-220 mu m s(-1)). The microstructures and electrochemical properties of these alloys have been investigated. It was shown that with increasing growth rate, the microstructure of unidirectional solidification alloy changed from cellular-columnar to columnar-dendritic structure and the primary columnar spacing lambda(1) increased, reached a maximum value and then decreased. Electrochemical measurement indicated that unidirectional solidification alloy with the fine cellular-columnar structure prepared at growth rate R=48 mu m s(-1) has significantly improved discharge capacity, high-rate dischargeability and cycling stability of the alloy.; Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; SCI(E); 15
语种	英语
DOI标识	10.1016/S0925-8388(96)02882-4
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/258307]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Lei, YQ,Zhou, Y,Luo, YC,et al. Preparation and electrochemical properties of unidirectionally solidified Ml(NiCoMnTi)(5) alloys. 1997-01-01.

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