Zr-Ti-V合金的微观组织及吸氢性能  

Microstructure and Hydrogen Absorption Property of Zr-Ti-V Alloy

作　　者：尹云飞[1] 薛祥义[1] 杨晓伟[1] 李金山[1] 胡锐[1] 常辉[1] 寇宏超[1] 周廉[1,2] 

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 [2]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2009年第7期1223-1226,共4页Rare Metal Materials and Engineering

基　　金：西北工业大学人才引进项目(07XE0127)

摘　　要：用Ti部分取代V对ZrV2合金进行合金化改性,研究铸态Zr-Ti-V合金的表面形貌,初始活化和吸氢动力学性能。发现,Zr-Ti-V合金具有较低的活化温度;由柱状晶和细小等轴晶组成的复合结构使其可以快速吸氢并具有良好的抗粉化能力。吸氢动力学曲线表现双斜率特征,573～673K之间存在一个临界温度Tc,在Tc以下,吸氢速率由大变小,受相变速率控制;Tc以上,吸氢速率由小变大,由表面过程控制。In order to improve the properties and to prepare Zr-Ti-V alloy, V was partially substituted with Ti in ZrV2 alloy. The microstructure, the initial activation and dynamic performances of hydrogen absorption of the alloy are studied. It was found that the Zr-Ti-V alloy has a low activation temperature to absorb hydrogen fast and a good anti-powder capability due to the composite structure consisting of columnar crystals and small equiaxed crystals. The kinetic curves of hydrogen absorption exhibit dual-slope characteristics with a critical temperature Tc of 573 K to 673 K. When the temperature was below To, the hydrogen absorption rate is controlled by the phase transition rate, from large to small with time increasing; and when the temperature was above To, the hydrogen absorption rate turns from large to small with time increasing, controlled by the surface reaction process.

关 键 词：Zr-Ti-V合金 微观组织 吸氢动力学 激活温度 

分 类 号：TG139.7[一般工业技术—材料科学与工程]