氢钟作为精密计时器为卫星导航系统提供了高精度时间计量保障。氢钟用吸气材料的吸氢性能直接影响其可靠性和稳定性。国内对氢钟用吸气材料研发主要为钛多孔材料，此材料激活温度高，吸氢后易碎。如果将吸气合金制成非晶合金可改善这些缺点。因为非晶材料的原子结构是长程无序，它为氢原子的扩散和占位提供了低能垒空穴。以此理论为基础，申请者前期与上海天文台合作，制备了Ti20Zr20Ni40Cr10V10非晶合金，吸氢后力学性能优良，抗拉强度、延伸率和弹性模量分别为434 MPa、0.76%和57.2 GPa。为了满足氢钟应用要求，本申请提出“氢钟用具有优良力学性能的非晶吸气合金Ti20Zr20Ni40-xCr10V10REx研究”。希望通过添加稀土元素(RE)提高非晶的吸氢性能，研发一种具有自主知识产权的低激活温度、大吸氢量、高力学性能的氢钟用吸气材料，为氢钟的小型化及星载应用提供保障。

As a chromoneter, hydrogen maser can ensure very precision time measurement for satellite navigation system. The performance of hydrogen absorption in getter materials can directly affect the reliability and stability of the hydrogen maser. Domestic research and development of getters for the hydrogen maser mainly focus on titanium porous materials, which have high activation temperature resulting in degrading mechanical property and even becoming powders after hydrogen absorption. The amorphous getter alloy can improve these disadvantages because its structure is atomic long-range disordered arrangement, which can provide a large number of low energy barrier holes to benefit hydrogen atom diffusion and occupied position. Based on the theory of amorphous structure and combining a co-operation with Shanghai Astronomical Observatory, Ti20Zr20Ni40Cr10V10 amorphous alloy has been prepared. The mechanical property of the Ti20Zr20Ni40Cr10V10 amorphous alloy is good during the process of hydrogen absorption. After hydrogen absorption, its tensile strength, elongation and elastic modulus is 434 MPa, 76% and 57.2 GPa, respectively. In order to further reach requirements of applications of the hydrogen maser, the title of “Study of Ti20Zr20Ni40-xCr10V10Rex Amorphous Getter Alloy with Excellent Mechanical Properties used in the Hydrogen Maser” is proposed in this application. It is expected that hydrogen absorption performance of amorphous alloy will be further improved by adding rare earth elements (RE). A new type of getter materials used in hydrogen maser with independent intellectual property rights will be explored. It will provide a guarantee for miniature hydrogen maser and spaceborne applications.