Ti掺杂ZrV2合金的相组成及贮氢性能研究

Phase Composition and Hydrogen Absorption Property of Ti Doped ZrV2 Alloy

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C15 Laves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 ℃，1 h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’t Hoff关系外推出室温下该合金的平衡压力为8.1×10-14 Pa。

Abstract:

(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