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A Review for Consistent Analysis of Hydrogen Permeability through Dense Metallic Membranes

1
Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
2
Department of Materials Design Innovation Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
*
Author to whom correspondence should be addressed.
Membranes 2020, 10(6), 120; https://doi.org/10.3390/membranes10060120
Received: 24 April 2020 / Revised: 27 May 2020 / Accepted: 7 June 2020 / Published: 10 June 2020
(This article belongs to the Special Issue Recent Advances in Hydrogen Permeable Metal Membranes)
The hydrogen permeation coefficient (ϕ) is generally used as a measure to show hydrogen permeation ability through dense metallic membranes, which is the product of the Fick’s diffusion coefficient (D) and the Sieverts’ solubility constant (K). However, the hydrogen permeability of metal membranes cannot be analyzed consistently with this conventional description. In this paper, various methods for consistent analysis of hydrogen permeability are reviewed. The derivations of the descriptions are explained in detail and four applications of the consistent descriptions of hydrogen permeability are introduced: (1) prediction of hydrogen flux under given conditions, (2) comparability of hydrogen permeability, (3) understanding of the anomalous temperature dependence of hydrogen permeability of Pd-Ag alloy membrane, and (4) design of alloy composition of non-Pd-based alloy membranes to satisfy both high hydrogen permeability together with strong resistance to hydrogen embrittlement. View Full-Text
Keywords: hydrogen permeability; chemical potential; diffusion; pressure-composition isotherm; alloy design; Pd-based alloy; V-based alloy hydrogen permeability; chemical potential; diffusion; pressure-composition isotherm; alloy design; Pd-based alloy; V-based alloy
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Suzuki, A.; Yukawa, H. A Review for Consistent Analysis of Hydrogen Permeability through Dense Metallic Membranes. Membranes 2020, 10, 120.

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