Hydrogen evolution from cathodically charged titanium aluminide alloy Ti-24Al-11Nb

研究成果: Article

3 引用 (Scopus)

抄録

A Ti3Al-based titanium aluminide alloy, Ti-24Al-11Nb, was cathodically charged with hydrogen in a 5% H2SO4 aqueous solution for various charging times, and the formation and dissociation of the hydride, the hydrogen evolution behavior and the total hydrogen uptake were investigated mainly by means of X-ray diffractometry and thermal desorption spectroscopy (TDS). The same kind of hydride phase as observed previously in Ti-25Al alloy (hexagonal hydride) was presumably formed in the Ti-24Al-11Nb alloy after cathodic charging. No damage, such as cracks, was induced by hydrogen charging. Two kinds of TDS peaks, one probably corresponding to hydride dissociation and the other to hydrogen dissolution in the normal lattice site, were found after longer hydrogen charging. It is suggested that niobium addition to Ti3Al-based titanium aluminide alloy may reduce hydrogen susceptibility during cathodic charging.

元の言語English
ページ(範囲)127-131
ページ数5
ジャーナルJournal of Alloys and Compounds
340
発行部数1-2
DOI
出版物ステータスPublished - 2002 6 26

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Titanium alloys
Hydrogen
Hydrides
Thermal desorption spectroscopy
Niobium
X ray diffraction analysis
Dissolution
Cracks

ASJC Scopus subject areas

  • Metals and Alloys

これを引用

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title = "Hydrogen evolution from cathodically charged titanium aluminide alloy Ti-24Al-11Nb",
abstract = "A Ti3Al-based titanium aluminide alloy, Ti-24Al-11Nb, was cathodically charged with hydrogen in a 5{\%} H2SO4 aqueous solution for various charging times, and the formation and dissociation of the hydride, the hydrogen evolution behavior and the total hydrogen uptake were investigated mainly by means of X-ray diffractometry and thermal desorption spectroscopy (TDS). The same kind of hydride phase as observed previously in Ti-25Al alloy (hexagonal hydride) was presumably formed in the Ti-24Al-11Nb alloy after cathodic charging. No damage, such as cracks, was induced by hydrogen charging. Two kinds of TDS peaks, one probably corresponding to hydride dissociation and the other to hydrogen dissolution in the normal lattice site, were found after longer hydrogen charging. It is suggested that niobium addition to Ti3Al-based titanium aluminide alloy may reduce hydrogen susceptibility during cathodic charging.",
keywords = "Electrochemical reactions, High-temperature alloys, Hydrogen absorbing materials",
author = "Akito Takasaki and Tetsuya Homma",
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TY - JOUR

T1 - Hydrogen evolution from cathodically charged titanium aluminide alloy Ti-24Al-11Nb

AU - Takasaki, Akito

AU - Homma, Tetsuya

PY - 2002/6/26

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N2 - A Ti3Al-based titanium aluminide alloy, Ti-24Al-11Nb, was cathodically charged with hydrogen in a 5% H2SO4 aqueous solution for various charging times, and the formation and dissociation of the hydride, the hydrogen evolution behavior and the total hydrogen uptake were investigated mainly by means of X-ray diffractometry and thermal desorption spectroscopy (TDS). The same kind of hydride phase as observed previously in Ti-25Al alloy (hexagonal hydride) was presumably formed in the Ti-24Al-11Nb alloy after cathodic charging. No damage, such as cracks, was induced by hydrogen charging. Two kinds of TDS peaks, one probably corresponding to hydride dissociation and the other to hydrogen dissolution in the normal lattice site, were found after longer hydrogen charging. It is suggested that niobium addition to Ti3Al-based titanium aluminide alloy may reduce hydrogen susceptibility during cathodic charging.

AB - A Ti3Al-based titanium aluminide alloy, Ti-24Al-11Nb, was cathodically charged with hydrogen in a 5% H2SO4 aqueous solution for various charging times, and the formation and dissociation of the hydride, the hydrogen evolution behavior and the total hydrogen uptake were investigated mainly by means of X-ray diffractometry and thermal desorption spectroscopy (TDS). The same kind of hydride phase as observed previously in Ti-25Al alloy (hexagonal hydride) was presumably formed in the Ti-24Al-11Nb alloy after cathodic charging. No damage, such as cracks, was induced by hydrogen charging. Two kinds of TDS peaks, one probably corresponding to hydride dissociation and the other to hydrogen dissolution in the normal lattice site, were found after longer hydrogen charging. It is suggested that niobium addition to Ti3Al-based titanium aluminide alloy may reduce hydrogen susceptibility during cathodic charging.

KW - Electrochemical reactions

KW - High-temperature alloys

KW - Hydrogen absorbing materials

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