Performance Evaluation and Thermal Shock Behavior of PS-PVD (Gd0.9Yb0.1)2Zr2O7/YSZ Thermal Barrier Coatings
Source abstract
Abstract
In this study, (Gd0.9Yb0.1)2Zr2O7 (GYbZ)/yttria-stabilized zirconia (YSZ) double-ceramic-layer (DCL) thermal barrier coatings (TBCs) were prepared by plasma spray-physical vapor deposition (PS-PVD). The microstructure, mechanical performance, and thermal shock behavior of coatings prepared with spraying distances of 600, 800, and 1000 mm were investigated. The GYbZ coating prepared with a spraying distance of 600 mm showed a closely packed columnar structure. However, the GYbZ coatings prepared with spraying distances of 800 and 1000 mm showed a quasi-columnar structure. The GYbZ coating prepared with a spraying distance of 800 mm had the thickest columnar crystals with obvious inter-columnar gaps. In addition, this coating exhibited excellent mechanical performance and the best thermal shock resistance. The primary failure patterns appearing during thermal shocking on the surface of TBCs can be classified into the following five types: caves, exfoliation, delamination cracks, spalled areas, and radiate cracks. Furthermore, the failure behavior of these coatings in water-quenching tests is clarified.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: High-Temperature Coating Behaviors · Nuclear Materials and Properties · Nuclear materials and radiation effects
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou 510632, China
National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Science, Guangzhou 510650, China
Funding
Key-Area Research and Development Programs of Guangdong Province · Key-Area Research and Development Programs of Guangzhou · National Natural Science Foundation of China · National Key R＆D Program of China · Open Funds of the State Key Laboratory of Rare Earth Resource Utilization · Guangdong Academy of sciences Project · Guangdong Special Plan Local Innovation and Entrepreneurship Team · Guangzhou Science and Technology Project · Special fund project of Guangdong Academy of Sciences · Guangzhou Major Projects of Industry-University-Research (IUR) Collaborative Innovation“Surface Treatment and Repair for Key Components of Industrial Gas Turbine (IGT)”
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