Effect of Cr and Y2O3 on the oxidation behavior of Co-based oxide dispersion strengthened superalloys at 900 °C

Hao Yu; Shigeharu Ukai; Shigenari Hayashi; Naoko Hori Oono

doi:10.1016/j.corsci.2017.08.013

Effect of Cr and Y₂O₃ on the oxidation behavior of Co-based oxide dispersion strengthened superalloys at 900 °C

Hao Yu, Shigeharu Ukai, Shigenari Hayashi, Naoko Hori Oono

Materials Design Division

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

In order to study the effect of Cr and Y₂O₃ addition on the oxidation behavior of novel Co-20Cr-10Al (wt.%) oxide dispersion strengthened (ODS) superalloys, an isothermal oxidation test was carried out at 900 °C in air. The addition of Cr altered the oxide scale from the multilayered scale with an external Co oxide/CoAl₂O₄ and an inner Al₂O₃ to a single Al₂O₃ scale. Y₂O₃ addition increased oxidation mass gain slightly but improved spallation resistance of the external Al₂O₃ scale.

Original language	English
Pages (from-to)	147-156
Number of pages	10
Journal	Corrosion Science
Volume	127
DOIs	https://doi.org/10.1016/j.corsci.2017.08.013
Publication status	Published - 2017 Oct

Keywords

A. Alumina
A. Cobalt
B. EPMA
C. Oxidation

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Materials Science(all)

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@article{2fa53e2314a443f69d22ec27a75ed18a,

title = "Effect of Cr and Y2O3 on the oxidation behavior of Co-based oxide dispersion strengthened superalloys at 900 °C",

abstract = "In order to study the effect of Cr and Y2O3 addition on the oxidation behavior of novel Co-20Cr-10Al (wt.%) oxide dispersion strengthened (ODS) superalloys, an isothermal oxidation test was carried out at 900 °C in air. The addition of Cr altered the oxide scale from the multilayered scale with an external Co oxide/CoAl2O4 and an inner Al2O3 to a single Al2O3 scale. Y2O3 addition increased oxidation mass gain slightly but improved spallation resistance of the external Al2O3 scale.",

keywords = "A. Alumina, A. Cobalt, B. EPMA, C. Oxidation",

author = "Hao Yu and Shigeharu Ukai and Shigenari Hayashi and Oono, {Naoko Hori}",

note = "Funding Information: This work is supported by Grant-in-Aid for Scientific Research (B) , 24360282 , Japan Society for the Promotion of Science (JSPS) . H. Yu is grateful to the China Scholarship Council (CSC) for the provision of a scholarship. The authors would like to thank the laboratory of Nano-Micro Material Analysis in Hokkaido University for the utilizing of EPMA. The authors also gratefully acknowledge the help of Professor Piers Williamson for reviewing and providing valuable suggestions. ",

year = "2017",

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doi = "10.1016/j.corsci.2017.08.013",

language = "English",

volume = "127",

pages = "147--156",

journal = "Corrosion Science",

issn = "0010-938X",

publisher = "Elsevier Limited",

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TY - JOUR

T1 - Effect of Cr and Y2O3 on the oxidation behavior of Co-based oxide dispersion strengthened superalloys at 900 °C

AU - Yu, Hao

AU - Ukai, Shigeharu

AU - Hayashi, Shigenari

AU - Oono, Naoko Hori

N1 - Funding Information: This work is supported by Grant-in-Aid for Scientific Research (B) , 24360282 , Japan Society for the Promotion of Science (JSPS) . H. Yu is grateful to the China Scholarship Council (CSC) for the provision of a scholarship. The authors would like to thank the laboratory of Nano-Micro Material Analysis in Hokkaido University for the utilizing of EPMA. The authors also gratefully acknowledge the help of Professor Piers Williamson for reviewing and providing valuable suggestions.

PY - 2017/10

Y1 - 2017/10

N2 - In order to study the effect of Cr and Y2O3 addition on the oxidation behavior of novel Co-20Cr-10Al (wt.%) oxide dispersion strengthened (ODS) superalloys, an isothermal oxidation test was carried out at 900 °C in air. The addition of Cr altered the oxide scale from the multilayered scale with an external Co oxide/CoAl2O4 and an inner Al2O3 to a single Al2O3 scale. Y2O3 addition increased oxidation mass gain slightly but improved spallation resistance of the external Al2O3 scale.

AB - In order to study the effect of Cr and Y2O3 addition on the oxidation behavior of novel Co-20Cr-10Al (wt.%) oxide dispersion strengthened (ODS) superalloys, an isothermal oxidation test was carried out at 900 °C in air. The addition of Cr altered the oxide scale from the multilayered scale with an external Co oxide/CoAl2O4 and an inner Al2O3 to a single Al2O3 scale. Y2O3 addition increased oxidation mass gain slightly but improved spallation resistance of the external Al2O3 scale.

KW - A. Alumina

KW - A. Cobalt

KW - B. EPMA

KW - C. Oxidation

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U2 - 10.1016/j.corsci.2017.08.013

DO - 10.1016/j.corsci.2017.08.013

M3 - Article

AN - SCOPUS:85028320656

VL - 127

SP - 147

EP - 156

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

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