サスペンションプラズマ溶射で成膜した複合遮熱コーティングの熱サイクル疲労特性

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  • Thermal cycle fatigue properties of the composite TBCs sprayed by suspension plasma spray technique

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<p>Thermal barrier coatings (TBCs) are used in hot sections of aero-engines and land-based gas turbines for increased efficiency and extended life of superalloy components. Recently, the suspension plasma spray (SPS) technique has attracted attention as a new method of using submicron spray powder as the suspension. Because of using submicron fine powders, the SPS technique can fabricate coatings with unique microstructures, such as columnar and cauliflower-like structures. In this study, the double-layered TBCs consisting of YSZ and YbTa3O9 were prepared using the SPS technique. Based on the thermal cycle fatigue test results, the effect of microstructure on the thermal fatigue property of the SPS-TBCs was discussed.</p>

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