Evaluation of hydrogen absorption properties of Ti-0.2 mass% Pd alloy in fluoride solutions

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

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    The hydrogen absorption properties of Ti-0.2 mass% Pd (Ti-0.2Pd) alloy in 2.0% and 0.2% acidulated phosphate fluoride (APF) and neutral 2.0% NaF solutions (25 °C) has been evaluated by hydrogen thermal desorption analysis. During the early stage of immersion (120 h) in the 2.0% APF solution, the amount of absorbed hydrogen was lower than 500 mass ppm. A thermal desorption of hydrogen primary appearing with a peak at 500-600 °C and a broad desorption ranging from 100 to 400 °C were observed. In the 0.2% APF solution, the amount of absorbed hydrogen saturated at 100-200 mass ppm; the thermal desorption of hydrogen appeared with a single peak at 550 °C. In the 2.0% NaF solution, hydrogen absorption was negligible even after 1000 h of immersion, although corrosion pits were observed. The results of the present study suggest that the hydrogen absorption of Ti-0.2Pd alloy, as compared with commercial pure titanium, is suppressed in fluoride solutions.

    Original languageEnglish
    Pages (from-to)227-233
    Number of pages7
    JournalJournal of Alloys and Compounds
    Volume400
    Issue number1-2
    DOIs
    Publication statusPublished - 2005 Sep 1

    Fingerprint

    Fluorides
    Hydrogen
    Acidulated Phosphate Fluoride
    Thermal desorption
    Phosphates
    Titanium
    Desorption
    Corrosion

    Keywords

    • Corrosion
    • Fluoride
    • Hydrogen embrittlement
    • Ti-Pd alloy

    ASJC Scopus subject areas

    • Metals and Alloys

    Cite this

    Evaluation of hydrogen absorption properties of Ti-0.2 mass% Pd alloy in fluoride solutions. / Yokoyama, Ken'ichi; Ogawa, Toshio; Asaoka, Kenzo; Sakai, Jun'ichi.

    In: Journal of Alloys and Compounds, Vol. 400, No. 1-2, 01.09.2005, p. 227-233.

    Research output: Contribution to journalArticle

    Yokoyama, Ken'ichi ; Ogawa, Toshio ; Asaoka, Kenzo ; Sakai, Jun'ichi. / Evaluation of hydrogen absorption properties of Ti-0.2 mass% Pd alloy in fluoride solutions. In: Journal of Alloys and Compounds. 2005 ; Vol. 400, No. 1-2. pp. 227-233.
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    N2 - The hydrogen absorption properties of Ti-0.2 mass% Pd (Ti-0.2Pd) alloy in 2.0% and 0.2% acidulated phosphate fluoride (APF) and neutral 2.0% NaF solutions (25 °C) has been evaluated by hydrogen thermal desorption analysis. During the early stage of immersion (120 h) in the 2.0% APF solution, the amount of absorbed hydrogen was lower than 500 mass ppm. A thermal desorption of hydrogen primary appearing with a peak at 500-600 °C and a broad desorption ranging from 100 to 400 °C were observed. In the 0.2% APF solution, the amount of absorbed hydrogen saturated at 100-200 mass ppm; the thermal desorption of hydrogen appeared with a single peak at 550 °C. In the 2.0% NaF solution, hydrogen absorption was negligible even after 1000 h of immersion, although corrosion pits were observed. The results of the present study suggest that the hydrogen absorption of Ti-0.2Pd alloy, as compared with commercial pure titanium, is suppressed in fluoride solutions.

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