A new method for studying thermal desorption of hydrogen from metals based on internal friction technique

Yu. Yagodzinskyy*, O. Tarasenko, S. Smuk, P. Aaltonen, Hannu Hänninen

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    4 Citations (Scopus)

    Abstract

    Many hydrogenated pure metals and industrial alloys with FCC lattices show a distinct internal friction peak above room temperature caused by the thermal desorption of hydrogen. Based on these observations, a new method for studying the hydrogen diffusivity and the interaction of hydrogen with lattice defects is proposed for the temperature range of 250-500 K. The desorption origin of the peak was studied in detail in hydrogen-charged Inconel 600 alloys with different carbon contents. The peak was shown to possess transient and non-relaxation nature. In some cases, a fine structure of the peak caused by hydrogen traps can be observed. A theoretical model of the thermal desorption effects on the losses of mechanical energy, i.e., internal friction, in metals is developed.

    Original languageEnglish
    Pages (from-to)111-120
    Number of pages10
    JournalPhysica Scripta
    VolumeT94
    Issue numberT94
    DOIs
    Publication statusPublished - 2001
    MoE publication typeA1 Journal article-refereed

    Keywords

    • hydrogen
    • internal friction
    • thermal desorption

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