First-principles study of hydrogen permeation in palladium-gold alloys - art. no. 181901

[摘要]：Density functional theory and lattice model calculations are combined to study the permeability of hydrogen in Pd lightly alloyed with Au. This study shows that small amounts of Au substitutions in Pd leads to, respectively, an increase and decrease of the diffusivity and solubility of hydrogen in the alloy. The competition between these two phenomena depends on temperature and can yield dilute PdAu membranes with a hydrogen permeability higher than pure Pd. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3656739]

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