ArticleExperimental mechanics2026
High-Sensitivity Hydrogen Gas Permeation: System Development, Sample Preparation, and Influence of Testing Variables.
Article in Experimental mechanics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: There is a need to develop quantitative, high-resolution hydrogen gas (H Objective: This study aims to develop and validate a high-sensitivity H Methods: A gas permeation system capable of operating at pressures up to 50 bar and temperatures up to 250 Results: Surface oxides are shown to play a dominant role in controlling hydrogen permeation at room temperature. The presence of oxide layers can severely hinder or completely suppress hydrogen uptake, with measurable permeation requiring oxide removal via pickling and Pd coating on both surfaces, or activation through hydrogen-assisted reduction at elevated temperature. Residual oxygen present prior to hydrogen exposure further reduces permeability by modifying surface boundary conditions, indicating strongly surface-controlled kinetics. Under optimised surface conditions, hydrogen transport follows bulk diffusion-controlled behaviour, with steady-state flux obeying Sieverts' law at 25 Conclusions: The developed high-sensitivity permeation system resolves hydrogen fluxes as low as 1.98
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