Thermal cyclic life of functionally-graded gadolinium zirconate/yitria stabilized zirconia thermal barrier coating
Aluminum alloys; Chromium alloys; Gadolinium; Heat resistance; Heat treatment; Isotherms; Plasma spraying; Thermal fatigue; Yttria stabilized zirconia; Zirconia; Air plasma spray process; Functionally graded; Functionally graded coatings; Gadolinium zirconate; Isothermal heat treatments; Stabilized...
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2023
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my.uniten.dspace-239642023-05-29T14:53:34Z Thermal cyclic life of functionally-graded gadolinium zirconate/yitria stabilized zirconia thermal barrier coating Johari A.D. Manap A. Yunus S.M. 57199710877 57200642155 56902397100 Aluminum alloys; Chromium alloys; Gadolinium; Heat resistance; Heat treatment; Isotherms; Plasma spraying; Thermal fatigue; Yttria stabilized zirconia; Zirconia; Air plasma spray process; Functionally graded; Functionally graded coatings; Gadolinium zirconate; Isothermal heat treatments; Stabilized zirconia; Thermal barrier coating (TBC); Thermal cyclic tests; Thermal barrier coatings In this study, two types of thermal barrier coatings (TBC); duplex and functionally-graded coatings were deposited on superalloy Nimonic 263 substrates using air plasma spray process. The duplex coating consists of YSZ top coat and NiCrAlY bond coat. The functionally-graded coating consists of five layers with GZ as top layer, GZ+YSZ and YSZ+NiCrAlY as intermediate layers. The TBC samples were subjected to isothermal heat treatment at 1100 �C for 100 hours before undergoing thermal cyclic tests at 1200 �C up to 20% spallation to evaluate the oxidation and thermal fatigue resistance of the coatings. Results indicate that the functionally-graded GZ TBC has a better cyclic life than the duplex YSZ TBC after isothermal heat treatment. The isothermal heat treatment also improved the thermal cyclic lifetime of the functionally-graded GZ TBC by more than threefold in comparison to the as-sprayed GZ TBC. � 2018 ASM International� All rights reserved. Final 2023-05-29T06:53:34Z 2023-05-29T06:53:34Z 2018 Conference Paper 2-s2.0-85068902115 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85068902115&partnerID=40&md5=4aab0e8ff644ca4f6c5d383ab369e16d https://irepository.uniten.edu.my/handle/123456789/23964 2018-May 35 41 ASM International Scopus |
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| description |
Aluminum alloys; Chromium alloys; Gadolinium; Heat resistance; Heat treatment; Isotherms; Plasma spraying; Thermal fatigue; Yttria stabilized zirconia; Zirconia; Air plasma spray process; Functionally graded; Functionally graded coatings; Gadolinium zirconate; Isothermal heat treatments; Stabilized zirconia; Thermal barrier coating (TBC); Thermal cyclic tests; Thermal barrier coatings |
| author2 |
57199710877 |
| author_facet |
57199710877 Johari A.D. Manap A. Yunus S.M. |
| format |
Conference Paper |
| author |
Johari A.D. Manap A. Yunus S.M. |
| spellingShingle |
Johari A.D. Manap A. Yunus S.M. Thermal cyclic life of functionally-graded gadolinium zirconate/yitria stabilized zirconia thermal barrier coating |
| author_sort |
Johari A.D. |
| title |
Thermal cyclic life of functionally-graded gadolinium zirconate/yitria stabilized zirconia thermal barrier coating |
| title_short |
Thermal cyclic life of functionally-graded gadolinium zirconate/yitria stabilized zirconia thermal barrier coating |
| title_full |
Thermal cyclic life of functionally-graded gadolinium zirconate/yitria stabilized zirconia thermal barrier coating |
| title_fullStr |
Thermal cyclic life of functionally-graded gadolinium zirconate/yitria stabilized zirconia thermal barrier coating |
| title_full_unstemmed |
Thermal cyclic life of functionally-graded gadolinium zirconate/yitria stabilized zirconia thermal barrier coating |
| title_sort |
thermal cyclic life of functionally-graded gadolinium zirconate/yitria stabilized zirconia thermal barrier coating |
| publisher |
ASM International |
| publishDate |
2023 |
| _version_ |
1806426395914534912 |
| score |
13.214268 |