Hydrogen absorption behavior of beta titanium alloy in acid fluoride solutions

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

*この研究の対応する著者

    研究成果: Article査読

    34 被引用数 (Scopus)

    抄録

    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.

    本文言語English
    ページ(範囲)2419-2425
    ページ数7
    ジャーナルBiomaterials
    25
    12
    DOI
    出版ステータスPublished - 2004 5月

    ASJC Scopus subject areas

    • バイオテクノロジー
    • バイオエンジニアリング
    • 生体医工学

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