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Effect of Cu on oxidation behaviour of FCC Fe-Ni-Cr-Al and Ni-Cr-Al based alloys

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Title: Effect of Cu on oxidation behaviour of FCC Fe-Ni-Cr-Al and Ni-Cr-Al based alloys
Authors: Hayashi, Shigenari Browse this author →KAKEN DB
Kudo, Daiki Browse this author
Nagashima, Ryouta Browse this author
Utsumi, Haruki Browse this author
Keywords: Al2O3-scale forming austenitic Fe-base alloy
Cu effect
Critical Al content for Al2O3 scale formation
Issue Date: Feb-2020
Publisher: Elsevier
Journal Title: Corrosion Science
Volume: 163
Start Page: 108273
Publisher DOI: 10.1016/j.corsci.2019.108273
Abstract: The high-temperature oxidation behaviour of Fe-Ni-Cr-Al and Ni-Cr-Al alloys with and without Cu addition was investigated at 1000 degrees C in air to determine the effect of Cu on the critical Al content necessary for forming an external Al2O3 scale. The oxidation mass gain of Fe-17Ni-17Cr-7.7Al-Cu and Ni-17Cr-10Al alloys was found to decrease with increased Cu content. An external Al2O3 scale developed when 5at%Cu and more and 10at%Cu and more was added to Fe-17Ni-17Cr-7.7Al and Ni-17Cr-10Al alloys, respectively. The beneficial effect of Cu is inferred to be due to decreased oxygen concentration at the alloy surface and enhanced Al outward diffusion.
Rights: ©2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 林 重成

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