Structure, mechanical properties, and hydrogen permeability of Pd-Cu and Pd-Ru membrane foils prepared by magnetron sputtering

Structure, mechanical properties, and hydrogen permeability of Pd-Cu and Pd-Ru membrane foils prepared by magnetron sputtering

Magnetron sputtering is used to prepare thin (down to 7 μm) Pd-Cu and Pd-Ru membrane foils deposited on the surface of a SiO 2 /Si heterostructure at 300 and 700 K. Condensed foils (CFs) of an ordered Pd-Cu solid solution (β phase with a CsCl-type structure) and a Pd-Ru solid solution (fcc lattice)...

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Bibliographic Details
Published in:Russian metallurgy Metally Vol. 2012; no. 11; pp. 994 - 1001
Main Authors: Ievlev, V. M., Burkhanov, G. S., Roshan, N. R., Belonogov, E. K., Maksimenko, A. A., Dontsov, A. I., Rudakov, K. E.
Format: Journal Article
Language:English
Published: Dordrecht SP MAIK Nauka/Interperiodica 01-11-2012
Springer Nature B.V
Subjects:
Chemistry and Materials Science
Deposition
Foils (structural shapes)
Magnetron sputtering
Materials Science
Metallic Materials
Palladium
Permeability
Solid solutions
Surface layer
Texture
Atomic Force Microscopy Image
RUSSIAN Metallurgy
Magnetron Sputtering
Scan Ning Electron Microscopy
Foil Thickness
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Summary:Magnetron sputtering is used to prepare thin (down to 7 μm) Pd-Cu and Pd-Ru membrane foils deposited on the surface of a SiO 2 /Si heterostructure at 300 and 700 K. Condensed foils (CFs) of an ordered Pd-Cu solid solution (β phase with a CsCl-type structure) and a Pd-Ru solid solution (fcc lattice) are synthesized for the first time. The foils of both alloys are characterized by a gradient granular structure due to selective development of 〈110〉 and 〈112〉 textures and a 〈111〉 texture in the Pd-Cu and Pd-Ru foils during their deposition, respectively. The hardness of the free surface of both foils removed from the substrate is determined by nanoindentation. The hardness is 3.0–3.6 GPa and is 20–50% lower than that of the contact surface (at the interface with the substrate) owing to the gradient structure. The hydrogen permeability of the Pd-Cu CF (β phase) is higher than that of the Pd CF by almost an order of magnitude (effect of a less dense crystal lattice) and is 5–7 times higher than those of the Pd-Ru CF and the Pd-Cu foil prepared by rolling.
Bibliography:ObjectType-Article-2
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ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029512110080