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| Abstract No.: |
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| Title: |
Characterization of a plasma sprayed multilayered thermal barrier coating of different characteristic pores
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| Authors: |
Chang-Jiu Li* / Xi'an Jiaotong University, P.R. China
Tao Liu / State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University,, China
Guan-Jun Yang/ State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University,, China
Cheng-Xin Li/ State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University,, China
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| Abstract: |
Thermal barrier coatings (TBCs) of gas turbine faced ultra complicated service condition. Nowadays, TBCs are expected to be applied to higher and higher temperature condition to protect the gas turbine with high efficiency. Under higher temperature conditions, the problems including corrosion, sintering and the mis-matching stress induced by the thermal grown oxide become severe. In this study, atmospheric plasma spray (APS) was applied to deposit the ceramic coatings. By adjusting the coating pore structures based on novel approaches for dense ceramic coating and the coating of 2D sintering-resistant pores, the TBCs with different functional layers were prepared. Then, the CMAS corrosion behavior, sintering-resistance and thermal cycling performance of the TBCs were characterized. The present results indicate that by designing a multilayer structure, TBC with high performance at higher temperature condition than 1250 oC can be achieved.
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