Effects of Ce and Si additions to CoNiCrAlY bond coat materials on oxidation behavior and crack propagation of thermal barrier coatings

K. Ogawa; K. Ito; Tetsuo Shoji; D. W. Seo; H. Tezuka; H. Kato

doi:10.1361/105996306X147081

Effects of Ce and Si additions to CoNiCrAlY bond coat materials on oxidation behavior and crack propagation of thermal barrier coatings

K. Ogawa, K. Ito, Tetsuo Shoji, D. W. Seo, H. Tezuka, H. Kato

工学研究科・附属先端材料強度科学研究センター

研究成果: Paper › 査読

16 被引用数 (Scopus)

抄録

In thermal barrier coating (TBC) systems, thermally grown oxide (TGO) forms at the interface between the top coat and the bond coat (BC) during service. Delamination or spallation at the interface occurs by the TGO formation and growth. Therefore, modifications of the BC materials are one means to inhibit the TGO formation and to improve the crack resistance of TBCs. In this study, morphologies of TGO were controlled by using Ce and Si additions to conventional CoNiCrAlY BC material. The evaluation of the crack resistance was carried out using acoustic emission methods under pure bending conditions. As a result, when the BCs of TBCs with Ce added were aged at 1373 K over 10 h, the morphologies of the TGO were changed drastically. The BC materials of TBCs coated with Ce added indicated an improved crack resistance with hightemperature exposure. It is expected that the morphologies can improve the crack resistance of TBCs.

本文言語	English
ページ	640-651
ページ数	12
DOI	https://doi.org/10.1361/105996306X147081
出版ステータス	Published - 2006
イベント	2006 International Thermal Spray Conference: Building on 100 Years of Success - Seattle, WA, United States 継続期間: 2006 5月 15 → 2006 5月 18

Other

Other	2006 International Thermal Spray Conference: Building on 100 Years of Success
国/地域	United States
City	Seattle, WA
Period	06/5/15 → 06/5/18

ASJC Scopus subject areas

表面および界面
表面、皮膜および薄膜
材料化学

文献へのアクセス

10.1361/105996306X147081

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引用スタイル

Ogawa, K., Ito, K., Shoji, T., Seo, D. W., Tezuka, H., & Kato, H. (2006). Effects of Ce and Si additions to CoNiCrAlY bond coat materials on oxidation behavior and crack propagation of thermal barrier coatings. 640-651. Paper presented at 2006 International Thermal Spray Conference: Building on 100 Years of Success, Seattle, WA, United States. https://doi.org/10.1361/105996306X147081

Ogawa, K, Ito, K, Shoji, T, Seo, DW, Tezuka, H & Kato, H 2006, 'Effects of Ce and Si additions to CoNiCrAlY bond coat materials on oxidation behavior and crack propagation of thermal barrier coatings', Paper presented at 2006 International Thermal Spray Conference: Building on 100 Years of Success, Seattle, WA, United States, 06/5/15 - 06/5/18 pp. 640-651. https://doi.org/10.1361/105996306X147081

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title = "Effects of Ce and Si additions to CoNiCrAlY bond coat materials on oxidation behavior and crack propagation of thermal barrier coatings",

abstract = "In thermal barrier coating (TBC) systems, thermally grown oxide (TGO) forms at the interface between the top coat and the bond coat (BC) during service. Delamination or spallation at the interface occurs by the TGO formation and growth. Therefore, modifications of the BC materials are one means to inhibit the TGO formation and to improve the crack resistance of TBCs. In this study, morphologies of TGO were controlled by using Ce and Si additions to conventional CoNiCrAlY BC material. The evaluation of the crack resistance was carried out using acoustic emission methods under pure bending conditions. As a result, when the BCs of TBCs with Ce added were aged at 1373 K over 10 h, the morphologies of the TGO were changed drastically. The BC materials of TBCs coated with Ce added indicated an improved crack resistance with hightemperature exposure. It is expected that the morphologies can improve the crack resistance of TBCs.",

keywords = "Cerium, Crack resistance, Silicon, Thermal barrier coatings, Thermally grown oxide",

author = "K. Ogawa and K. Ito and Tetsuo Shoji and Seo, {D. W.} and H. Tezuka and H. Kato",

year = "2006",

doi = "10.1361/105996306X147081",

language = "English",

pages = "640--651",

note = "2006 International Thermal Spray Conference: Building on 100 Years of Success ; Conference date: 15-05-2006 Through 18-05-2006",

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T1 - Effects of Ce and Si additions to CoNiCrAlY bond coat materials on oxidation behavior and crack propagation of thermal barrier coatings

AU - Ogawa, K.

AU - Ito, K.

AU - Shoji, Tetsuo

AU - Seo, D. W.

AU - Tezuka, H.

AU - Kato, H.

PY - 2006

Y1 - 2006

N2 - In thermal barrier coating (TBC) systems, thermally grown oxide (TGO) forms at the interface between the top coat and the bond coat (BC) during service. Delamination or spallation at the interface occurs by the TGO formation and growth. Therefore, modifications of the BC materials are one means to inhibit the TGO formation and to improve the crack resistance of TBCs. In this study, morphologies of TGO were controlled by using Ce and Si additions to conventional CoNiCrAlY BC material. The evaluation of the crack resistance was carried out using acoustic emission methods under pure bending conditions. As a result, when the BCs of TBCs with Ce added were aged at 1373 K over 10 h, the morphologies of the TGO were changed drastically. The BC materials of TBCs coated with Ce added indicated an improved crack resistance with hightemperature exposure. It is expected that the morphologies can improve the crack resistance of TBCs.

AB - In thermal barrier coating (TBC) systems, thermally grown oxide (TGO) forms at the interface between the top coat and the bond coat (BC) during service. Delamination or spallation at the interface occurs by the TGO formation and growth. Therefore, modifications of the BC materials are one means to inhibit the TGO formation and to improve the crack resistance of TBCs. In this study, morphologies of TGO were controlled by using Ce and Si additions to conventional CoNiCrAlY BC material. The evaluation of the crack resistance was carried out using acoustic emission methods under pure bending conditions. As a result, when the BCs of TBCs with Ce added were aged at 1373 K over 10 h, the morphologies of the TGO were changed drastically. The BC materials of TBCs coated with Ce added indicated an improved crack resistance with hightemperature exposure. It is expected that the morphologies can improve the crack resistance of TBCs.

KW - Cerium

KW - Crack resistance

KW - Silicon

KW - Thermal barrier coatings

KW - Thermally grown oxide

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