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Fe-Ni-Cr合金の700°Cにおける大気中および水蒸気中の高温酸化挙動

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J. Jpn Inst. Met. Mater. 81(9) 417.pdf1.21 MBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/76563

Title: Fe-Ni-Cr合金の700°Cにおける大気中および水蒸気中の高温酸化挙動
Other Titles: Oxidation Behavior of Fe-Ni-Cr Alloys at 700°C in Air and Steam
Authors: 林, 重成1 Browse this author →KAKEN DB
高島, 大2 Browse this author
河内, 礼文3 Browse this author
西山, 佳孝4 Browse this author
Authors(alt): Hayashi, Shigenari1
Takashima, Dai2
Kochi, Norifumi3
Nishiyama, Yoshitaka4
Keywords: iron-nickel-chromium alloy
high-temperature oxidation
water vapor
chromium diffusion
internal oxidation
Issue Date: 1-Sep-2017
Publisher: 日本金属学会
Journal Title: 日本金属学会誌
Journal Title(alt): Journal of the Japan Institute of Metals and Materials
Volume: 81
Issue: 9
Start Page: 417
End Page: 426
Publisher DOI: 10.2320/jinstmet.JB201705
Abstract: High-temperature oxidation behavior of Fe-Ni-Cr alloys with different Ni contents in air and steam at 700°C was investigated. Oxidation mass gain in steam was higher than that in air. In both atmospheres oxidation mass gain tended to decrease with increasing Ni content. However, the Ni concentration dependence of oxidation mass gain in air was complex, i.e., oxidation mass gain increased with increase in Ni content up to 35% then decreased with higher Ni content. But oxidation mass gain of binary Ni-20Cr significantly increased. Such a complex oxidation behavior was not observed when alloys were oxidized in steam. The internal oxidation zone was locally formed in air, and a Cr2O3 scale was found to develop on the areas without internal oxidation. The size of area, where an internal oxidation zone was developed, changed depending on Ni content. In steam, most of the surface area of alloys was covered by an internal oxidation zone. Cr content, 20%, was considered to be insufficient but close to the critical Cr content for exclusive Cr2O3 scale formation in air. The critical Cr content for exclusive Cr2O3 scale formation was found to depend on alloy Ni content due to lower oxygen permeability in alloys with higher Ni content and the cross-term effect for Cr outward diffusion.
Type: article
URI: http://hdl.handle.net/2115/76563
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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