| Item type |
デフォルト(1) |
| 公開日 |
2025-06-17 |
| タイトル |
|
|
タイトル |
Anti-oxidation effect of chromium addition for TiFe hydrogen storage alloys |
|
言語 |
en |
| 作成者 |
Chen, Zhiwen
Guo, Fangqin
Sunamoto, Reiji
Yin, Chenghao
Miyaoka, Hiroki
Ichikawa, Takayuki
|
| アクセス権 |
|
|
アクセス権 |
embargoed access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_f1cf |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
© 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This is not the published version. Please cite only the published version. |
| 権利情報 |
|
|
言語 |
ja |
|
権利情報 |
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。 |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
TiFe-based hydrogen storage alloys |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Surface oxidation |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Anti-oxidation property |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Degradation process |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Kinetics |
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Anti-oxidation properties of Cr substitution were investigated by comparing TiFe and TiFe0.9Cr0.1. Kinetic measurements reveal that the degradation rate of TiFe0.9Cr0.1 is slower than that of TiFe, indicating that Cr substitution drastically enhances the anti-oxidation properties of the mother alloy TiFe. In order to understand the mechanism of this effect, X-ray photoelectron spectroscopy (XPS) was used to identify the surface chemical state of these alloys, which indicates that Cr plays quite an important role in the suppression of surface oxidation. It is clarified that the deactivation of TiFe is caused by the oxidation of Ti on the surface and, as a result, the obstruction of hydrogen penetration. On the contrary, with the substitution of Cr for Fe in TiFe0.9Cr0.1, the Ti oxidation becomes more difficult even though the Cr was totally oxidized, which makes it easier to keep the initial activated state of hydrogenation (Ti with a low oxidation state). It also further demonstrated that Cr acts as a sacrificial element, undergoing complete oxidation to protect Ti from oxidation, and assists in keeping metallic Ti0, which is crucial for maintaining the hydrogen absorption kinetics. Therefore, the Cr substitution for Fe significantly improves the anti-oxidation properties of TiFe-based alloys. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Elsevier |
|
言語 |
en |
| 日付 |
|
|
日付 |
2026-09-20 |
|
日付タイプ |
Available |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1016/j.jallcom.2024.176634 |
| 助成情報 |
|
|
|
助成機関識別子タイプ |
Crossref Funder |
|
|
助成機関識別子タイプURI |
https://doi.org/10.13039/501100002241 |
|
|
助成機関名 |
国立研究開発法人科学技術振興機構 |
|
|
言語 |
ja |
|
|
助成機関名 |
Japan Science and Technology Agency |
|
|
言語 |
en |
|
|
研究課題番号 |
JPMJFS2129 |
| 書誌情報 |
en : Journal of Alloys and Compounds
巻 1008,
p. 176634,
発行日 2024-09-20
|
| 備考 |
|
|
言語 |
en |
|
値 |
The full-text file will be made open to the public on 20 September 2026 in accordance with publisher's 'Terms and Conditions for Self-Archiving' |
JAC_1008_176634.pdf (1.3 MB)
