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Evaluation of microstructural and environmental effects on the hydrogen uptake and desorption in high-strength carbon steels: A thermal desorption spectroscopy study

  • Shabnam Karimi*
  • , Iman Taji
  • , Simona Palencsár
  • , Arne Dugstad
  • , Tarlan Hajilou
  • , Afrooz Barnoush
  • , Kim Verbeken
  • , Roy Johnsen
  • , Tom Depover
  • *Corresponding author for this work
    • Norwegian University of Science and Technology
    • Institute for Energy Technology
    • Ghent University

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The hydrogen uptake in three high-strength carbon steels is studied after exposure to three different environments: an aqueous solution with CO2 bubbling, CO2/H2S bubbling, and cathodic charging without external gassing. The hydrogen uptake is substantially higher in CO2/H2S environment compared to CO2 environment for all materials. The lamellar cementite morphology absorbs higher hydrogen than the material with spheroidite microstructure with similar carbon content. The corrosion layer formed on the steels in CO2 environment strongly affects the hydrogen effusion and the thermal desorption spectroscopy spectrum in all materials, while the corrosion layer formed in CO2/H2S environment does not show this effect.

    Original languageEnglish
    Article number111210
    JournalCorrosion Science
    Volume219
    DOIs
    Publication statusPublished - 15 Jul 2023

    Keywords

    • CO environment
    • CO/HS environment
    • Carbon steel
    • Pearlite
    • Spheroidite
    • Thermal desorption spectroscopy

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