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An Innovative Procedure to Evaluate the Hydrogen Diffusion Coefficient in Metals from Absorption Measurements

Author

Listed:
  • Andrea Moriani

    (Dipartimento Fusione e Tecnologie per la Sicurezza Nucleare, ENEA, Via E. Fermi 45, Frascati, 00044 Rome, Italy)

  • Oriele Palumbo

    (Consiglio Nazionale delle Ricerche, Istitutodei Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy)

  • Silvano Tosti

    (Dipartimento Fusione e Tecnologie per la Sicurezza Nucleare, ENEA, Via E. Fermi 45, Frascati, 00044 Rome, Italy)

  • Alessia Santucci

    (Dipartimento Fusione e Tecnologie per la Sicurezza Nucleare, ENEA, Via E. Fermi 45, Frascati, 00044 Rome, Italy)

  • Alfonso Pozio

    (Dipartimento Tecnologie Energetiche, ENEA, Via Anguillarese 301, S. Maria di Galeria, 00123 Rome, Italy)

  • Francesco Trequattrini

    (Consiglio Nazionale delle Ricerche, Istitutodei Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy
    Dipartimento di Fisica, Sapienza Università di Roma, Piazzale A. Moro 5, 00185 Rome, Italy)

  • Annalisa Paolone

    (Consiglio Nazionale delle Ricerche, Istitutodei Sistemi Complessi, U.O.S. La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy)

Abstract

A large number of metallic alloys are currently under investigation in the field of hydrogen storage and hydrogen separation membranes. For such applications, the knowledge of the hydrogen diffusion coefficient in the given alloy is of great importance even if its direct measurement is not always easy to perform. In this view, the aim of this work is to describe an innovative procedure able to provide the lower limit of the hydrogen diffusion coefficient by performing hydrogen absorption kinetic experiments. Two different tools are presented: The first is a numerical code which solves the diffusion problem inside metals according to the general theory of the transport phenomena, and the second is a dimensional analysis that describes the dependence of the hydrogen diffusion coefficient from a few governing parameters. Starting from the results of several hydrogen absorption kinetic experiments performed on a Pd–Ag sample under different experimental conditions, the hydrogen diffusion coefficients were assessed by using both the described tools. A good agreement among the results obtained by means of the two procedures was observed.

Suggested Citation

  • Andrea Moriani & Oriele Palumbo & Silvano Tosti & Alessia Santucci & Alfonso Pozio & Francesco Trequattrini & Annalisa Paolone, 2019. "An Innovative Procedure to Evaluate the Hydrogen Diffusion Coefficient in Metals from Absorption Measurements," Energies, MDPI, vol. 12(9), pages 1-13, April.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:9:p:1652-:d:227305
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    References listed on IDEAS

    as
    1. Gunnar K. Pálsson & Andreas Bliersbach & Max Wolff & Atieh Zamani & Björgvin Hjörvarsson, 2012. "Using light transmission to watch hydrogen diffuse," Nature Communications, Nature, vol. 3(1), pages 1-5, January.
    2. Oriele Palumbo & Sergio Brutti & Francesco Trequattrini & Suchismita Sarker & Michael Dolan & Dhanesh Chandra & Annalisa Paolone, 2015. "Temperature Dependence of the Elastic Modulus of (Ni 0.6 Nb 0.4 ) 1−x Zr x Membranes: Effects of Thermal Treatments and Hydrogenation," Energies, MDPI, vol. 8(5), pages 1-11, May.
    3. Oriele Palumbo & Francesco Trequattrini & Suchismita Sarker & Madhura Hulyakar & Narendra Pal & Dhanesh Chandra & Michael Dolan & Annalisa Paolone, 2017. "New Studies of the Physical Properties of Metallic Amorphous Membranes for Hydrogen Purification," Challenges, MDPI, vol. 8(1), pages 1-12, February.
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