新型钛钒系贮氢电极合金  

New type TiV-based hydrogen storage electrode alloy

作　　者：朱云峰[1] 潘洪革[1] 刘永锋[1] 李锐[1] 金勤伟[1] 王启东[1] 

机构地区：[1]浙江大学材料科学与工程系,杭州310027

出　　处：《中国有色金属学报》2003年第3期680-684,共5页The Chinese Journal of Nonferrous Metals

基　　金：全国优秀博士学位论文作者专项资金资助项目 (2 0 0 0 0 5 2 )

摘　　要：研究了新型钛钒系贮氢电极合金Ti0 .8Zr0 .2 V2 .665Mn0 .53 5Cr0 .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C14Laves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C14Laves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。The phase structure, microstructure and electrochemical properties of the new type TiV-based hydrogen storage electrode alloy Ti 0.8Zr 0.2V 2.665Mn 0.535Cr 0.8Ni 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.

关 键 词：钛钒系 贮氢电极合金 C14 LAVES相 TiNi相 电化学性能 XRD EDS 

分 类 号：TG139.7[一般工业技术—材料科学与工程]