Bond Coat Oxidation and Hot Corrosion Behavior of Plasma Sprayed YSZ Coating on Ni Superalloy

Saremi, Mohsen; Afrasiabi, Abbas; Kobayashi, Akira

Transactions of JWRI, 2007, 36(1), 41-45

アクセス数:299件（2025-03-14 17:26 集計）

固定URL: https://doi.org/10.18910/5187

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論文情報

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タイトル
Bond Coat Oxidation and Hot Corrosion Behavior of Plasma Sprayed YSZ Coating on Ni Superalloy
著者
著者名
Saremi, Mohsen
著者名
Afrasiabi, Abbas
NRID
1000070110773 1000070110773
著者名
Kobayashi, Akira
キーワード等
Oxidation
Hot corrosion
YSZ
Plasma spray
抄録
Oxidation and hot corrosion are considered as two main destructive factors in thermal barrier coatings (TBCs). The mechanisms of bond coat oxidation and hot corrosion of yttria stabilized zirconia (YSZ) plasma sprayed coatings were evaluated. Oxidation tests were carried out at 1100℃ for 22,42 and 100h. Hot corrosion tests were performed on the coating in molten salt (Na₂SO₄+V₂O₅) at 1050℃ for 40h. Spallation was observed at the bond coat/YSZ interface after 100h oxidation. Micro XRD analysis after the oxidation test revealed the formation of destructive oxides such as NiCr₂O₄, NiCrO₃ and NiCrO₄ within the bond coat of YSZ coating. XRD and SEM studies after hot corrosion demonstrated the formation of monoclinic ZrO₂ and YVO₄ crystals as hot corrosion products, which caused the degradation of YSZ coating.
出版者
大阪大学接合科学研究所
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
Joining and Welding Research Institute, Osaka University
収録物名
Transactions of JWRI
巻(号)
36(1)
ページ
41-45
刊行年月
2007-07
言語
英語
ハンドルURL
https://hdl.handle.net/11094/5187
DOI
https://doi.org/10.18910/5187
PISSN
03874508
NCID
AA00867058
アクセス権
open access
出版タイプ
Version of Record
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.36 No.1 (2007-07)