Influence of vacuum annealing conditions on the surface oxidation and vacancy condensation in the surface of an FeAl single crystal

Yamauchi, A.; Tsunekane, M.; Kurokawa, Kazuya et al.

Intermetallics, 2010, 18(4), 412-416

Permalink : https://hdl.handle.net/2115/42971

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アクセス権
open access
URI
https://hdl.handle.net/2115/42971
タイトル
Influence of vacuum annealing conditions on the surface oxidation and vacancy condensation in the surface of an FeAl single crystal
著者
Yamauchi, A. ; Tsunekane, M. ; Kurokawa, Kazuya ; Hanada, Shuji ; Yoshimi, Kyosuke
著者名
Yamauchi, A.
著者名
Tsunekane, M.
e-Rad_Researcher
00161779
著者名
Kurokawa, Kazuya
著者名
Hanada, Shuji
著者名
Yoshimi, Kyosuke
言語
英語
キーワード
Iron aluminides
Oxidation
Defects: point defect
Microscopy, various
発行日
2010-04
出版者
Elsevier
収録物名
Intermetallics
巻(号)
18(4)
ページ
412-416
抄録
The influence of annealing atmosphere, temperature and time on the surface oxidation and vacancy condensation behavior of {111}-oriented single crystals of B2-type FeAl was investigated. AFM observation showed that as-annealed surfaces under a high vacuum were rugged and covered with a thin oxide film. The results obtained by TEM indicated that the thin oxide film was {001}-oriented κ-Al2O3 epitaxially grown on the {111}-oriented FeAl surface. AES measurements showed that the thickness of the oxide film was almost twice as thick as that of the passive Al2O3 film formed on the FeAl surface in an ambient atmosphere. It was found that the growth of surface mesopores is attributable to both the condensation of supersaturated vacancies in FeAl substrate and the Kirkendall effect by the surface oxidation during the vacuum annealing.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
PISSN
0966-9795
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1016/j.intermet.2009.08.014