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

Hayashi, Shigenari; Kudo, Daiki; Nagashima, Ryouta; Utsumi, Haruki

doi:10.1016/j.corsci.2019.108273


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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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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/83983

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 http://creativecommons.org/licenses/by-nc-nd/4.0/
Rights:	http://creativecommons.org/licenses/by-nc-nd/4.0/
Type:	article (author version)
URI:	http://hdl.handle.net/2115/83983
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)

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