Effect of Annealing on Plasma Sprayed Zirconia/ Alimina Composite Coating

Kobayashi, Akira; Shanmugavelayutham, Gurusamy; Ando, Yasutaka

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タイトル	Effect of Annealing on Plasma Sprayed Zirconia/ Alimina Composite Coating
著者	Kobayashi, Akira Kobayashi, Akira
	Shanmugavelayutham, Gurusamy Shanmugavelayutham, Gurusamy
	Ando, Yasutaka Ando, Yasutaka
キーワード等	Plasma Spraying
	Thermal Barrier Coating
	Oxidation
	X-Ray Diffraction
	Scanning Electron Microscope
	Hardness
抄録	In thermal barrier coatings (TBC), failure occurs near or at the interface between the metallic bondcoat and topcoat. During high temperature service an oxide scale consisting mainly of α-alumina forms and is named thermally grown oxide (TGO) along the bond/topcoat interface. For diminishing the creation of thermally grown oxide (TGO), a dense coating with low residual stress and thermal stress buffer layer was preferable. In this study, to deposit such a kind of coating, a gas tunnel type plasma spraying system was utilized to produce an alumina/zirconia functionally graded thermal barrier coating and discussed its physical and mechanical properties, thermal behavior and high temperature oxidation resistance of the coating are discussed. Consequently, the proposed system exhibited superior mechanical properties and oxidation resistance at the expenses of a slightly lower thermal insulating effect. This interlayer is preferred in order to minimize the detrimental effect of the phase transformation of γ-Al₂O₃ to α-Al₂O₃.
公開者	大阪大学接合科学研究所
公開者の別表記	Joining and Welding Research Institute, Osaka University
公開者 (ヨミ)	オオサカダイガクセツゴウカガクケンキュウジョ
掲載誌名	Transactions of JWRI
巻	35
号	2
開始ページ	17
終了ページ	21
刊行年月	2006-12
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/5055
言語	英語

著者版フラグ	publisher
NII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.35(2) P.17-P.21
DC.title	Effect of Annealing on Plasma Sprayed Zirconia/ Alimina Composite Coating
DC.creator	Kobayashi, Akira
	Shanmugavelayutham, Gurusamy
	Ando, Yasutaka
DC.publisher	大阪大学接合科学研究所
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2006-12
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/5055
DC.subject	Plasma Spraying
	Thermal Barrier Coating
	Oxidation
	X-Ray Diffraction
	Scanning Electron Microscope
	Hardness
DCTERMS.abstract	In thermal barrier coatings (TBC), failure occurs near or at the interface between the metallic bondcoat and topcoat. During high temperature service an oxide scale consisting mainly of α-alumina forms and is named thermally grown oxide (TGO) along the bond/topcoat interface. For diminishing the creation of thermally grown oxide (TGO), a dense coating with low residual stress and thermal stress buffer layer was preferable. In this study, to deposit such a kind of coating, a gas tunnel type plasma spraying system was utilized to produce an alumina/zirconia functionally graded thermal barrier coating and discussed its physical and mechanical properties, thermal behavior and high temperature oxidation resistance of the coating are discussed. Consequently, the proposed system exhibited superior mechanical properties and oxidation resistance at the expenses of a slightly lower thermal insulating effect. This interlayer is preferred in order to minimize the detrimental effect of the phase transformation of γ-Al₂O₃ to α-Al₂O₃.
citation_title	Effect of Annealing on Plasma Sprayed Zirconia/ Alimina Composite Coating
citation_author	Kobayashi, Akira
	Shanmugavelayutham, Gurusamy
	Ando, Yasutaka
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2006-12
citation_journal_title	Transactions of JWRI
citation_volume	35
citation_issue	2
citation_firstpage	17
citation_lastpage	21
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/5055
citation_keywords	Plasma Spraying
	Thermal Barrier Coating
	Oxidation
	X-Ray Diffraction
	Scanning Electron Microscope
	Hardness

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