Hydrogen permeability of 48Cu52Pd cold-rolled alloy foil and different methods of its surface pretreatment

Keywords: 48Cu52Pd foil, Cold rolling, Hydrogen permeability, Surface pretreatment, Pulsed photon treatment, Ultrasound


    The process of atomic hydrogen penetration into the metal phase is complicated by the phase-boundary transition from the liquid and/or gas phase. That is why the cleanliness of metal and alloy surfaces is of particular importance. The purpose of this work was to determine the effect of surface pretreatment using photon pulses, ultrasound, and potential cycling on the parameters of hydrogen permeability for 48Cu52Pd metal cold-rolled membranes.
    The study was focused on a foil of copper-palladium homogeneous alloy with 48 at. % Cu and 52 at. % Pd composition. The studied samples were obtained by cold rolling and their thickness were 10 and 16 μm. Surface pretreatment included rinsing in acetone, using ultrasound, pulsed photon treatment, and quadruple potential cycling over a wide range of potentials. Electrochemical studies included cyclic voltammetry and cathode-anodic chronoamperometry in a deaerated 0.1 M H2SO4 solution. Hydrogen permeability was calculated using mathematical models for samples of finite and semi-infinite thickness.
    It was found that the surface treatment of a 48Cu52Pd foil with photon pulses leads to both an increase in the ionisation rate of atomic hydrogen and an increase in the roughness of the foil surface. The diffusion coefficient of atomic hydrogen does not depend on the method of surface pretreatment with ultrasound and photon pulses. The extraction rate constant for the extraction of the atomic hydrogen after photon treatment increases, which facilitates the processes of both H introduction and ionisation due to the release of active centres of the surface. Electrochemical cleaning of the surface during the quadruple potential cycling contributes to the growth of the extraction rate constant for the extraction of atomic hydrogen


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Author Biographies

Natalia B. Morozova, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

Cand. Sci. (Chem.), Associate Professor, Department of Physical Chemistry, Voronezh State University (Voronezh, Russian Federation)

Lidiya E. Sidyakina, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

2th year undergraduate student of the Department of Physical Chemistry, Voronezh State University (Voronezh, Russian Federation)

Alexey I. Dontsov, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation; Voronezh State Technical University, 20 letiya Oktyabrya st., 84, Voronezh 394006, Russian Federation

Cand. Sci. (Phys.–Math.), Associate Professor, Department of Materials Science and Industry of Nanosystems, Voronezh State University; Associate Professor of the Department of Physics, Voronezh State Technical University (Voronezh, Russian Federation)

Alexander V. Vvedenskii, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

Dr. Sci. (Chem.), Full Professor, Department of Physical Chemistry, Voronezh State University (Voronezh, Russian Federation)


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How to Cite
Morozova, N. B., Sidyakina, L. E., Dontsov, A. I., & Vvedenskii, A. V. (2023). Hydrogen permeability of 48Cu52Pd cold-rolled alloy foil and different methods of its surface pretreatment. Condensed Matter and Interphases, 25(3), 373-382. https://doi.org/10.17308/kcmf.2023.25/11261
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