Ti掺杂ZrV_2合金的相组成及贮氢性能研究  

Phase Composition and Hydrogen Absorption Property of Ti Doped ZrV_2 Alloy

作　　者：王旭峰[1] 胡锐[1] 薛祥义[1] 杨晓伟[1] 张铁邦[1] 李金山[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《稀有金属材料与工程》2011年第3期487-490,共4页Rare Metal Materials and Engineering

基　　金：凝固技术国家重点实验室自主研究课题(38-TP-2009)

摘　　要：利用真空感应熔炼的方法制备出(ZrTi)V2合金,在950℃下对合金进行长时间的退火处理,对合金的相结构及吸氢性能进行测试。结果表明:(ZrTi)V2合金主要由C15Laves相、α-Zr相、Zr3V3O相和V基固溶体相组成,热处理使得α-Zr相及V基固溶体相减少;该合金经400℃,1h除气之后,再经过一次吸放氢循环即可达到最佳的活化效果;根据Van’tHoff关系外推出室温下该合金的平衡压力为8.1×10-14Pa。（ZrTi）V2 alloy was prepared by vacuum induction melting method and then annealed at 950 oC for a long time.The phase composition and hydrogen absorption property were investigated.Results show that（ZrTi）V2 alloy is composed of C15 Laves phase,α-Zr phase,Zr3V3O phase and V-based solid solution phase.The α-Zr phase and V-based solid solution phase decrease after heat treatment.The experimental alloy is easy to be activated.The best activation effect can be obtained by the process of removing gas at 400 oC for 1 h and a hydrogenation cycle.The equilibrium pressure is 8.1×10-14 Pa at room temperature extrapolated by Van＇t Hoff line.

关 键 词：AB2型 LAVES相 贮氢合金 除气 平衡压 

分 类 号：TG139.7[一般工业技术—材料科学与工程]