Direct measurement of hydrogen diffusivity through Pd-coated Ni-based amorphous metallic membranes
Direct measurement of hydrogen diffusivity through Pd-coated Ni-based amorphous metallic membranes
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DOI：
10.1016/j.memsci.2013.02.040
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发表时间：
2013-06
影响因子：
9.5
通讯作者：
Young-Im Wang;Jin-Yoo Suh;Young-Su Lee;J. Shim;E. Fleury;Y. Cho;Koh Seong-Ung
中科院分区：
文献类型：
--
作者：
Young-Im Wang;Jin-Yoo Suh;Young-Su Lee;J. Shim;E. Fleury;Y. Cho;Koh Seong-Ung
采用时间滞后法研究了氢在非晶态合金中的化学扩散率和渗透率。作为参考，对纯钯进行类似的测量。虽然氢扩散的非晶结构小于钯膜，非晶膜表现出更高的氢溶解度，导致相当的氢渗透性。锆含量的增加通过增强氢扩散率来增加渗透性，但对氢通量有贡献的氢的量不受影响。
A time-lag technique was employed to evaluate the chemical diffusivity and permeability of hydrogen through amorphous metallic alloys. As a reference, similar measurements were taken on pure palladium. While hydrogen diffusivity for the amorphous structures was smaller than that for a palladium membrane, the amorphous membranes exhibited higher hydrogen solubility, resulting in comparable hydrogen permeability. An increase in zirconium content increased permeability by enhancing hydrogen diffusivity, although the amount of hydrogen contributing to the hydrogen flux was not affected.