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<p>The absorption performance of getters significantly impacts the efficiency and lifespan of high vacuum devices. Currently, commonly used Zr-V-Fe-Co alloy getters exhibit limited absorption capacity. The presence of Co results in coarser material grains, thereby affecting absorption performance. This study investigated the effect of Y substitution for Fe on the absorption performance of Zr-V-Fe-Co alloys. The results indicate that an appropriate addition of Y can effectively enhance the absorption performance and refine the grain size of the Zr-V-Fe-Co alloy. Furthermore, the inclusion of Y led to a decrease in the binding energy among the elements in the Zr<sub>70</sub>V<sub>24.6</sub>Fe<sub>4.4−<i>x</i></sub>Co<sub>1.0</sub>Y<sub><i>x</i></sub> (<i>x</i> = 0-2.0&#xa0;wt.%) alloys. For example, the binding energy of V decreased from 530.25&#xa0;eV (<i>x</i> = 0) to 512.20&#xa0;eV. The decrease in binding energy enhances the system energy of the alloy, making it more susceptible to bonding with atmospheric gases to form compounds. Consequently, the absorption performance of the Zr-V-Fe-Co alloy is improved. This study offers valuable insights for the application of getters in high vacuum systems.</p>

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Improving Absorption Performance and Microstructure of Zr-V-Fe-Co Alloys by Substitution of Y Element for Fe

  • 期刊论文

  • 发表日期：

    2025年5月9日

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  • Xiaotong Xu,
  • Yihan Shen,
  • ZiJie Jiao,
  • Lingyun Wang,
  • Jie Xiang,
  • Shuiming Huang,
  • Tao Lu,
  • Xueling Hou

摘要

The absorption performance of getters significantly impacts the efficiency and lifespan of high vacuum devices. Currently, commonly used Zr-V-Fe-Co alloy getters exhibit limited absorption capacity. The presence of Co results in coarser material grains, thereby affecting absorption performance. This study investigated the effect of Y substitution for Fe on the absorption performance of Zr-V-Fe-Co alloys. The results indicate that an appropriate addition of Y can effectively enhance the absorption performance and refine the grain size of the Zr-V-Fe-Co alloy. Furthermore, the inclusion of Y led to a decrease in the binding energy among the elements in the Zr70V24.6Fe4.4−xCo1.0Yx (x = 0-2.0 wt.%) alloys. For example, the binding energy of V decreased from 530.25 eV (x = 0) to 512.20 eV. The decrease in binding energy enhances the system energy of the alloy, making it more susceptible to bonding with atmospheric gases to form compounds. Consequently, the absorption performance of the Zr-V-Fe-Co alloy is improved. This study offers valuable insights for the application of getters in high vacuum systems.