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| EB–PVD Thermal Barrier Coatings Process Optimization and Antioxidant Performance |
| WANG Bo 1 ,2, LIU Yang3 , YUAN Fuhe2 , CHENG Yuxian2 , ZHANG Chungang 2 |
| (1. School of Materials Science and Engineering, Beihang University, Beijing 100191, China; 2. AECC Shenyang Liming Aero-Engine Co., Ltd., Shenyang 110043, China; 3. Luxun Academy of Fine Arts, Shenyang 110004, China) |
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Abstract The effects of substrate preheating temperature, flow rate and time of filling oxygen on the thermal shock and oxidation resistance at 1150℃ of an YSZ thermal barrier coatings prepared by EB–PVD were studied by means of an orthogonal test. Thethermal shock cycle number of the coating increases to a maximal value as the substrate preheating temperature rises up to a temperature of 900℃. Nonetheless, it decreases as the preheating temperature further rises. Meanwhile, the thermal shock resistance of the YSZ coating increases with the filling oxygen flow rate and filling time, and it becomes approximately constant with the flow rate and filling time fall over a certain range of values. The optimized process parameters for the EB–PVD YSZ coating involve 900℃ of substrate preheating temperature, 200mL/min of oxygen flow rate and 15min of oxygen filling time.
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2020, 
