Preparation and properties of TiMo/ZrVFe getter materials

• Main Authors: ZHANG Yan, LI Yang, XU Xiao-qiang, LIU Qing, QIAO Shuang
• Format: Article
• Language: zho
• Published: Journal of Materials Engineering 2021-06-01
• Series: Journal of Materials Engineering
• Subjects: getter material; vacuum; activation; pumping speed; strength
• Online Access: http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2020.000686

TiMo/ZrVFe getter was prepared by powder metallurgy vacuum sintering method. The materials were analyzed by X-ray diffraction(XRD), particle size analyzer, dynamic flow method and vibration test. The influences of the ZrVFe alloy particle size, phases, proportion of composite material on sorption performance and strength were studied.The results show that the content of Fe element in ZrVFe material increases to generate more Laves (Zr(V_<i>x</i>Fe_1-<i>x</i>)₂) phase of C15 structure which can improve sorption performance, and the initial pumping speed of Zr-24%V-8%Fe(mass fraction) alloy reaches 1791 cm³·s^-1·cm^-2,which is 1.5 times as that (1206 cm³·s^-1·cm^-2) of the original Zr-24.6%V-5.4%Fe getter,the pumping speed decreases more slowly with the progress of the gettering process. The sorption performance and strength of the composite are affected greatly by adding different contents of Zr-24%V-8%Fe alloy, the sorption performance gradually improves with the increase of adding alloy. The initial pumping speed increases by 26.4% compared with that of TiMo material and an ideal pumping platform appears when 20%ZrVFe alloy is added.However, the strength of the composite decreases distinctly with the mass loss of 2.48% when the addition ratio is 30%.