轻量化氢原子钟Zr-V-Fe-Cr吸氢合金的研究

Study on Zr-V-Fe-Cr Hydrogen Source for Lightweight Hydrogen Atomic Clock

随着天文技术的发展,小型化天文卫星成为天文领域的研究热点。作为天文卫星核心部件的氢原子钟,轻量化也势在必行。目前,氢原子钟使用的吸附泵为多孔钛材料,它的氢容量小,体积大,激活温度高,无法满足氢原子钟小型化、轻量化的要求。研究了具有大储氢容量的Zr-V-Fe-Cr新型吸氢合金,并利用X射线衍射仪(X-Ray Diffraction,XRD)、扫描电子显微镜(Scanning Electron Microscope,SEM)、储氢性能测试平台等进行了测试。结果表明,新型合金Zr-V-Fe-Cr的吸氢容量高于多孔钛,且吸氢性能满足使用要求。为氢原子钟的氢源系统轻量化提供了新的选择,有望应用于下一代轻量化氢原子钟。

With the development of space astronomy technology,small astronomy satellites with lightweight become the research focus in the field of aerospace.As the heart of an astronomical satellite,it is very imperative for the hydrogen maser lasers to be lightweight.At present,the adsorption pump used in hydrogen atomic clock is titanium porous material,and it has problems such as low hydrogen capacity,large volume and high activation temperature,which increases the weight of hydrogen maser lasers.In this paper,The Zr-V-Fe-Cr hydrogen-absorbing alloy with large hydrogen storage capacity are studied.The results show that the hydrogen storage capacity of the new alloy is higher than that of Ti,and the hydrogen absorption performance can meet the requirements of use.It provides a new option for the lightweight hydrogen source system of the hydrogen atomic clock,and is expected to be used in the next generation of lightweight hydrogen atomic clocks.