抄録
A single-phase Ti3Al-based titanium aluminum alloy, Ti-25Al, was cathodically charged with hydrogen in a 5% H2SO4 aqueous solution for charging times up to 43.2 ks, and the formation and dissociation of a hydride, hydrogen evolution behavior and total hydrogen uptake were investigated by means of X-ray diffractometry and thermal desorption spectroscopy (TDS). After cathodic hydrogen charging, hydrogen concentrated mainly at the surface of the sample as a hydride phase, whose crystal structure probably is of a hexagonal type with the lattice parameters of a = 0.60 nm, c = 0.47 nm. Hydrogen also induced cracks and pits at grain boundaries or within grains. Three kinds of TDS peak, for which one corresponded to the hydride dissociation and the others presumably corresponded to trapping of hydrogen, could be found after longer hydrogen charging. The apparent hydrogen uptake in the Ti-25Al alloy increased with increasing charging time and the uptake level after charging for 43.2 ks was estimated to be about 700 wppm.
| 元の言語 | English |
|---|---|
| ページ（範囲） | 287-291 |
| ページ数 | 5 |
| ジャーナル | Journal of Alloys and Compounds |
| 巻 | 292 |
| 発行部数 | 1-2 |
| DOI | |
| 出版物ステータス | Published - 1999 11 15 |
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ASJC Scopus subject areas
- Metals and Alloys
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Hydrogen evolution from cathodically charged Ti3Al-based titanium aluminum alloy. / Takasaki, Akito; Furuya, Yoshio.
：: Journal of Alloys and Compounds, 巻 292, 番号 1-2, 15.11.1999, p. 287-291.研究成果: Article
}
TY - JOUR
T1 - Hydrogen evolution from cathodically charged Ti3Al-based titanium aluminum alloy
AU - Takasaki, Akito
AU - Furuya, Yoshio
PY - 1999/11/15
Y1 - 1999/11/15
N2 - A single-phase Ti3Al-based titanium aluminum alloy, Ti-25Al, was cathodically charged with hydrogen in a 5% H2SO4 aqueous solution for charging times up to 43.2 ks, and the formation and dissociation of a hydride, hydrogen evolution behavior and total hydrogen uptake were investigated by means of X-ray diffractometry and thermal desorption spectroscopy (TDS). After cathodic hydrogen charging, hydrogen concentrated mainly at the surface of the sample as a hydride phase, whose crystal structure probably is of a hexagonal type with the lattice parameters of a = 0.60 nm, c = 0.47 nm. Hydrogen also induced cracks and pits at grain boundaries or within grains. Three kinds of TDS peak, for which one corresponded to the hydride dissociation and the others presumably corresponded to trapping of hydrogen, could be found after longer hydrogen charging. The apparent hydrogen uptake in the Ti-25Al alloy increased with increasing charging time and the uptake level after charging for 43.2 ks was estimated to be about 700 wppm.
AB - A single-phase Ti3Al-based titanium aluminum alloy, Ti-25Al, was cathodically charged with hydrogen in a 5% H2SO4 aqueous solution for charging times up to 43.2 ks, and the formation and dissociation of a hydride, hydrogen evolution behavior and total hydrogen uptake were investigated by means of X-ray diffractometry and thermal desorption spectroscopy (TDS). After cathodic hydrogen charging, hydrogen concentrated mainly at the surface of the sample as a hydride phase, whose crystal structure probably is of a hexagonal type with the lattice parameters of a = 0.60 nm, c = 0.47 nm. Hydrogen also induced cracks and pits at grain boundaries or within grains. Three kinds of TDS peak, for which one corresponded to the hydride dissociation and the others presumably corresponded to trapping of hydrogen, could be found after longer hydrogen charging. The apparent hydrogen uptake in the Ti-25Al alloy increased with increasing charging time and the uptake level after charging for 43.2 ks was estimated to be about 700 wppm.
UR - http://www.scopus.com/inward/record.url?scp=0033365334&partnerID=8YFLogxK
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U2 - 10.1016/S0925-8388(99)00493-4
DO - 10.1016/S0925-8388(99)00493-4
M3 - Article
AN - SCOPUS:0033365334
VL - 292
SP - 287
EP - 291
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
IS - 1-2
ER -