Multichannel diffusion vs TDS model on example of energy spectra of bound hydrogen in 34CrNiMo6 steel after a typical heat treatment

A.K. Belyaev, A.M. Polyanskiy, V.A. Polyanskiy, Christof Sommitsch, Yu. A. Yakovlev

Research output: Contribution to journalArticlepeer-review


The paper is concerned with determination of the energy spectra of hydrogen in steels by
the Vacuum Hot Extraction method (VHE). The investigation is performed on example of
34CrNiMo6 steel and the benchmark study of Vacuum Hot Extraction method and
Thermal Desorption Spectroscopy (TDS) is provided. The spectrum of the hydrogen
binding energy and the hydrogen concentration in samples are identified. Two additional
energy levels are found out which are possibly related to strong covalent bonds. An
advantage of VHE in comparison with TDS is that VHE approach does not require presaturation
of samples by hydrogen. It keeps the original structure of the samples and
ensures that all types of traps are not destroyed in tests. Additionally, the present
approach opens new opportunity of accurate analysis on the base of the model of
hydrogen multichannel diffusion in steels.
© 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)8627-8634
JournalInternational Journal of Hydrogen Energy
Issue number20
Publication statusPublished - 2016

Fields of Expertise

  • Advanced Materials Science

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