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jwri35_02_17
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論文情報
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
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.35 No.2 (2006-12)
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著者版フラグ
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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