Design of thermal barrier coatings using gadolinium zirconate ceramics: A study on gadolinium zirconate/YSZ bilayers
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- LEE Daehyung
- School of Mechanical and Automotive Engineering, Kookmin University
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- KIM Tae Woo
- School of Mechanical and Automotive Engineering, Kookmin University
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- LEE Kee Sung
- School of Mechanical and Automotive Engineering, Kookmin University
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Abstract
FEM analysis and experiments are undertaken in this study for designing double ceramic-layered thermal barrier coatings (TBCs) to improve the resistance of coating layers to mechanical percussion. Double-coating layers, which comprise of a thermally insulating, Gd2Zr2O7-based layer upon a thermally adjustable, YSZ layer, are analyzed and designed with reference to indentation stress, and deposited by electron beam physical vapor deposition (EB-PVD). Additional analysis is also performed to find the optimal coating thickness. Linear elastic behaviors are assumed for the analysis, and the indentation stress-strain curves of the double-layer TBCs are compared with those of single-layer TBCs. The results from FEM analysis and experiments that use the Hertzian indentation technique indicate the advantage of double-layered TBCs for alleviating stress.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 117 (1365), 550-554, 2009
The Ceramic Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205283495936
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- NII Article ID
- 130000304873
- 10025967423
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- NII Book ID
- AA12229489
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- COI
- 1:CAS:528:DC%2BD1MXmtlygurs%3D
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 10214861
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed