Hydrogen absorption behavior of beta titanium alloy in acid fluoride solutions

Toshio Ogawa, Ken'ichi Yokoyama, Kenzo Asaoka, Jun'ichi Sakai

    Research output: Contribution to journalArticle

    31 Citations (Scopus)

    Abstract

    Hydrogen absorption behavior of a beta titanium alloy in acid fluoride solutions has been analyzed by hydrogen thermal desorption. The amount of absorbed hydrogen increased with immersion time in a 2.0% acidulated phosphate fluoride (APF) solution. In the case of an immersion time of 60h, the amount of absorbed hydrogen exceeded 10000 mass ppm. In contrast, the amount of hydrogen absorbed in the 0.2% APF solution was several times smaller than that in the 2.0% APF solution for the same immersion time. For immersion in a 0.2% APF solution, hydrogen absorption saturated after 48h. The surface topography and corrosion products on the surface of the specimen immersed in the 2.0% APF solution were different from those in the 0.2% APF solution. During the later stage of immersion, the amount of absorbed hydrogen markedly increased under higher applied stress, although the applied stress did not enhance hydrogen absorption during the early stage of immersion. These results of hydrogen absorption behavior are consistent with the delayed fracture characteristics of the beta titanium alloy.

    Original languageEnglish
    Pages (from-to)2419-2425
    Number of pages7
    JournalBiomaterials
    Volume25
    Issue number12
    DOIs
    Publication statusPublished - 2004 May

    Keywords

    • Beta titanium
    • Corrosion
    • Delayed fracture
    • Fluoride
    • Hydrogen embrittlement
    • Thermal desorption analysis

    ASJC Scopus subject areas

    • Biotechnology
    • Bioengineering
    • Biomedical Engineering

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