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Effect of Nickel Alloying Layer on Hydrogen Absorption Ability of Zr-Al Getter Material |
| LIU Chao-Zhuo;SHI Li-Qun |
| Applied Ion Beam Physics Laboratory, Institute of Modern Physics, Fudan University, Shanghai 200433 |
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| Cite this article: |
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LIU Chao-Zhuo, SHI Li-Qun 2004 Chin. Phys. Lett. 21 1035-1038 |
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Abstract By using ion beam sputtering, an 85-Å thick nickel layer was deposited on the Zr-Al alloy (non-evaporable getter) to improve the characteristic of the hydrogen absorption. The presputtering for 15 min to clean the surface passivation layer and the vacuum heating treatment of the sample at 750°C for 1 h for surface alloying can improve the ability of the gas absorption. The gas absorption experiments show fast absorption kinetics of the hydrogen pumping and good durability against contaminable gases. The Rutherford-back-scattering spectra and the secondary ion mass spectroscopy demonstrate the formation of an alloy of Zr, Al, and Ni in the near-surface area after the thermal process. The elastic recoil detection analysis indicates that the sample holds the original high capacity of hydrogen.
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| Keywords:
28.52.Fa
81.65.-b
81.65.Tx
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Published: 01 June 2004
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