Relationship between activation energy for hydrogen permeation and hydrogen permeation properties of amorphous Cu50Zr50 and Cu65Zr35 membranes |
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| Authors: | Kyoung-Won Park Jae-Pyung Ahn Hyun-Kwang Seok Yu-Chan Kim |
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| Affiliation: | 1. Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea;2. Nanomaterial Analysis Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea |
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| Abstract: | We investigate the role of hydrogen solubility and diffusivity on the activation energy for hydrogen permeability and the relationship between the hydrogen permeability and resistance to hydrogen embrittlement in amorphous membranes, Cu50Zr50 and Cu65Zr35. The membrane with the lower activation energy for permeation showed higher hydrogen permeability, but it showed lower durability under hydrogen atmosphere. This relationship between the two properties is discussed on the basis of the nature of the short-range ordered (SRO) structures constituting amorphous membranes under hydrogen ambient. |
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