高等学校化学学报

高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (9): 957.

• 论文 • 上一篇    下一篇

氢在非晶态合金MmNi4.5Mn0.5中的扩散

曹金兰, 周作祥, 王春明, 贾友群, 何兰龄   

  1. 南开大学化学系
  • 收稿日期:1987-03-24 出版日期:1988-09-24 发布日期:1988-09-24
  • 通讯作者: 曹金兰

Hydrogen Diffusion in Amorphous MmNi4.5 Mn0.5 Film

Chao Jinlan, Zhou Zuoxiang, Wang Chunming, Jia Yuqun, He Lanling   

  1. Department of Chemistry, Nankai University, Tianjin
  • Received:1987-03-24 Online:1988-09-24 Published:1988-09-24

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摘要： 合金MmNi4.5Mn0.5(Mm代表混合稀土元素)被认为是目前最有实际应用前景的贮氢材料,其晶态贮氢过程的研究,已有过报道[1]。本文用电化学方法研究氢在非晶态MmNi4.5Mn0.5的扩散行为。

关键词: 氢, 扩散, 复层膜

Abstract: The MmNi4.5Mn0.5 (Mm. misch rare earth elements) thin film was prepared by conventional vacuum deposition technique. MmNi4.5Mn0.5 powder was placed on tantalum boat which was preheated at a temperature of;1400℃.All the component of MmNi4.5Mn0.5 evaporated immediately at this temperature and was deposited onto a cleaned palladium film (0.040mm) which was-placed just: above the tantalum boat. Analysis of the film was performed by means of X-ray fluorescence spectroscopy and it was confirmed that the composition was MmNi4.5Mn0.5. It was shown by X-ray diffraction spectroscopy that the MmNi4.5 Mn0.5 film was amorph-cus alloys.The diffusion coefficient of hydrogen in the film at ambient temperature has been studied with electrpchmical technique. The diffusion coefficient Dof hydrogen in amorphous MmNi4.5Mn0.5 alloy film was determined, the value of Dis (2.46±0.36)×10-7cm2/s.

Key words: Hydrogen, Diffusion, Fifm

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