Abstract
The high-grade leak-tight foils 10–20 μm in thickness were obtained from effective alloys (wt %) Pd–6 In–0.5 Ru, Pd–6 Ru, and Pd–40 Cu by using advanced technology. For the Pd–40% wt Cu alloy, the foil with ordered β phase with the CsCl structure, exhibiting maximum hydrogen permeability in the Pd–Cu system, was formed by the combination of deformation and annealing conditions. The mechanical properties and hydrogen permeability of the obtained foil membranes as compared with the foils of 50 μm in thickness and also their performance for pure hydrogen at the membranes work in the commercially pure hydrogen medium were investigated. The concentration dilatation of the foils in hydrogen was investigated at various temperatures. Data on dilatation of palladium membrane alloys are of paramount importance to design of membrane filter elements and choice of their optimal usage conditions because these data determine the operational life of membrane. The Pd–6 wt % In–0.5 wt % Ru–1.25 wt % Co alloy with improved strength characteristics and lower temperature of α ↔ β hydride transition was developed on the basis of the Pd– 6 wt % In–0.5 wt % Ru alloy.
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ACKNOWLEDGMENTS
We are indebted to G.S. Burkhanov, Corresponding Member, Russian Academy of Sciences, for his expert opinion and personal tuition in the course of the work and during preparation of the article.
Funding
The work was supported by Ministry of Education and Science of the Republic of Kazakhstan as part of the scientific and technical program BR05236795 “Development of Hydrogen Energy Technologies in the Republic of Kazakhstan.”
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Roshan, N.R., Gorbunov, S.V., Chistov, E.M. et al. Membranes of Palladium Alloys for Ultrapure Hydrogen Production. Inorg. Mater. Appl. Res. 11, 1214–1221 (2020). https://doi.org/10.1134/S2075113320050287
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DOI: https://doi.org/10.1134/S2075113320050287