Effect of Al content on the high-temperature oxidation of Co-20Cr-(5,10)Al oxide dispersion strengthened superalloys

Yu, Hao; Ukai, Shigeharu; Hayashi, Shigenari et al.

Corrosion Science, 2017, 118, 49-59

Permalink : https://hdl.handle.net/2115/73370

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アクセス権
open access
URI
https://hdl.handle.net/2115/73370
タイトル
Effect of Al content on the high-temperature oxidation of Co-20Cr-(5,10)Al oxide dispersion strengthened superalloys
著者
Yu, Hao ; Ukai, Shigeharu ; Hayashi, Shigenari ; Ono, Naoko
著者名
Yu, Hao
e-Rad_Researcher
00421529
著者名
Ukai, Shigeharu
著者名
Hayashi, Shigenari
著者名
Ono, Naoko
言語
英語
キーワード
Cobalt
Alumina
SEM
Oxidation
発行日
2017-04
出版者
Elsevier
収録物名
Corrosion Science
巻(号)
118
ページ
49-59
抄録
The high-temperature oxidation of Co-based oxide dispersion strengthened (ODS) Co-20Cr-(5, 10) Al-2.4Hf-1.5Y(2)O(3) (wt%) superalloys was investigated at 900 C-omicron and 1000 C-omicron. The 10Al (wt%) superalloys possess better oxidation resistance with the formation of alumina scale than the 5Al (wt%) with a duplex scale of CoCr2O4/Cr2O3 and internal Al2O3. The alumina on the 10Al superalloy is composed of theta- and alpha-alumina at 900 C-omicron but dominated by alpha-alumina at 1000 C-omicron. The lower weight gain of 10Al superalloys at 1000 C-omicron than at 900 C-omicron was associated with different growth mechanisms of the Al2O3 scales. (C) 2017 Elsevier Ltd. All rights reserved.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
権利情報
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報
© 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN
0010-938X
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1016/j.corsci.2017.01.015