PS-PVD thermal barrier coatings microstructure modulation and high-temperature erosion resistance study

文献类型： 外文期刊

第一作者： Wang, Jia-jun

作者： Wang, Jia-jun;He, Qing;Zhang, Yu-sheng;You, Xiao-ming;Wang, Shi-xing;Liang, Li-kang;Wang, Jia-jun;He, Qing;Zhang, Yu-sheng;You, Xiao-ming;Wang, Shi-xing;Liang, Li-kang

作者机构：

关键词： PS-PVD; Plasma gas; Microstructure; High-temperature erosion; Mechanical properties

期刊名称：JOURNAL OF THE EUROPEAN CERAMIC SOCIETY （ 影响因子：6.2； 五年影响因子：6.3 ）

ISSN： 0955-2219

年卷期： 2025 年 45 卷 2 期

页码：

收录情况： SCI

摘要： Plasma spray-physical vapor deposition (PS-PVD) enables the modulation of both the microstructure and the performance of the coating by modulating the ratio of the three phases (gas, liquid, and solid) present in the jet. Considering the observed deficiency in the erosion resistance of PS-PVD coatings, the study explores improving high-temperature erosion resistance in PS-PVD thermal barrier coatings by adjusting Ar/He flow ratios. At a plasma gas flow rate of 90 SLPM, increasing the Ar/He ratio enhances nanohardness and elastic modulus. An Ar/He ratio of 2:1 provides erosion resistance comparable to standard APS coatings. Raising the plasma flow to 120 SLPM with the same Ar/He ratio forms a dense coating with low erosion rates. The study identifies a strong correlation between the hardness of the coating and erosion resistance. Lateral cracking from high-temperature and high-speed particle erosion is identified as the primary cause of failure.

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