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

Saremi, Mohsen; Afrasiabi, Abbas; Kobayashi, Akira

doi:https://doi.org/10.18910/5187

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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
カテゴリ	Transactions of JWRI / Vol.36 No.1 (2007-07)

資源タイプ	紀要論文
ローカル資源タイプ	紀要論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Transactions of JWRI. 2007, 36(1), p. 41-45
DC.title	Bond Coat Oxidation and Hot Corrosion Behavior of Plasma Sprayed YSZ Coating on Ni Superalloy
DC.creator	Saremi, Mohsen
	Afrasiabi, Abbas
	Kobayashi, Akira
DC.publisher	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
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2007-07
DC.subject	Oxidation
	Hot corrosion
	YSZ
	Plasma spray
DCTERMS.abstract	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.
DC.identifier	10.18910/5187
DC.format	application/pdf
citation_doi	https://doi.org/10.18910/5187
citation_title	Bond Coat Oxidation and Hot Corrosion Behavior of Plasma Sprayed YSZ Coating on Ni Superalloy
citation_author	Saremi, Mohsen
	Afrasiabi, Abbas
	Kobayashi, Akira
citation_publisher	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
citation_language	英語
citation_date	2007-07
citation_journal_title	Transactions of JWRI
citation_volume	36
citation_issue	1
citation_firstpage	41
citation_lastpage	45
citation_public_url	https://hdl.handle.net/11094/5187
citation_doi_detail	10.18910/5187

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