Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials
Founded at 2009

Hydrogen permeability of amorphous, nano- and crystalline alloys based on iron and nickel

V.A. Polukhin, N.I. Sidorov, R.M. Belyakova

Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences

DOI: 10.26456/pcascnn/2020.12.457

Original article

Abstract: The kinetics of hydrogen permeability and diffusion in hydrogenated membrane alloys based on Fe and Ni have been investigated, which have functional characteristics, structural strength and thermal stability, and are a promising alternative to expensive palladium alloys. The strength characteristics, thermal stability and resistance to hydrogen embrittlement have been studied. The mechanisms of structuring, diffusion and permeability of hydrogen in crystalline, amorphous, nanocrystalline states are considered. For membrane alloys, a particularly important aspect is the combination in open structures (amorphous and bcc), while for hydrogen accumulation, in addition to transport channels (diffusion and permeability), high-density intermetallic clusters are also required. It is noted that, during long-term operation, due to the appearance of dense cluster configurations of intermediate ordering, which shorten the diffusion channels, the transport of hydrogen through them begins to decrease.

Keywords: membrane alloys, amorphous structure, interatomic bonds, clusters, hydrogenation, glass transition, sorption, diffusion, permeability, intermetallic compounds, hydrides, hydrogen energy, molecular dynamics

  • Valeriy A. Polukhin – Dr. Sc., Chief Researcher, Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences
  • Nikolay I. Sidorov – Ph. D., Senior Researcher, Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences
  • Rimma M. Belyakova – Ph. D., Senior Researcher, Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences

Reference:

Polukhin, V.A. Hydrogen permeability of amorphous, nano- and crystalline alloys based on iron and nickel / V.A. Polukhin, N.I. Sidorov, R.M. Belyakova // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2020. — I. 12. — P. 457-473. DOI: 10.26456/pcascnn/2020.12.457. (In Russian).

Full article (in Russian): download PDF file

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