Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第13卷    第3期    总第54期    2003年6月

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文章编号:1004-0609(2003)03-0680-05
新型钛钒系贮氢电极合金
朱云峰, 潘洪革, 刘永锋, 李 锐, 金勤伟, 王启东

(浙江大学 材料科学与工程系, 杭州 310027)

摘 要: 研究了新型钛钒系贮氢电极合金Ti0.8Zr0.2V2.665Mn0.535Cr0.8Ni的相结构、微观组织及电化学性能。 XRD及EDS分析表明: 铸态合金主要由C14 Laves相母体和树枝晶的钒基固溶体相组成,同时由于成分偏析的缘故, 合金中还存在少量的TiNi基的第三相。热处理使得合金中C14 Laves相及钒基固溶体相的晶胞参数和晶胞体积增大,促进合金成分的均匀化, 同时极大地改善了合金电极的综合电化学性能。 

 

关键词: 钛;钒; 贮氢电极合金; C14 Laves相; TiNi相;电化学性能

New type TiV-based hydrogen storage 
electrode alloy
ZHU Yun-feng, PAN Hong-ge, LIU Yong-feng, 
LI Rui, JIN Qin-wei, WANG Qi-dong

Department of Materials Science and Engineering,
Zhejiang University, Hangzhou 310027, China

Abstract:The phase structure, microstructure and electrochemical properties of the new type TiV-based hydrogen storage electrode alloy Ti0.8Zr0.2V2.665Mn0.535Cr0.8Ni were studied. It is found by XRD and EDS analysis that the as-cast alloy mainly consists of the C14 Laves phase matrix and the dendritic V-based solid solution phase. Besides, a small amount of third TiNi-based phase precipitates in the as-cast alloy due to the compositional segregation during solidification. Annealing treatment leads to the increaseing in lattice parameters and unit cell volumes of both the C14 Laves phase and the V-based solid solution phase, makes the alloy composition more homogeneous and improves greatly the overall electrochemical properties of the alloy electrode.

 

Key words: Ti; V; hydrogen storage electrode alloy; C14 Laves phase; TiNi-based phase; electrochemical pr

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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