@article{ZHANG2022, 
author = {Xiaofeng ZHANG and Ming LI and Ao ZHANG and Shuangquan GUO and Jie MAO and Chunming DENG and Panpan WANG and Changguang DENG and Junli FENG and Min LIU and Kesong ZHOU and Cheng LAI},
title = {Al-modification for PS-PVD 7YSZ TBCs to improve particle erosion and thermal cycle performances},
year = {2022},
journal = {Journal of Advanced Ceramics},
volume = {11},
number = {7},
pages = {1093-1103},
keywords = {plasma spray-physical vapor deposition (PS-PVD), thermal barrier coatings (TBCs), Al-modification, particle erosion resistance, thermal cycle performance},
url = {https://www.sciopen.com/article/10.1007/s40145-022-0596-0},
doi = {10.1007/s40145-022-0596-0},
abstract = {Plasma spray-physical vapor deposition (PS-PVD) as a novel process was used to prepare feather-like columnar thermal barrier coatings (TBCs). This special microstructure shows good strain tolerance and non-line-of-sight (NLOS) deposition, giving great potential application in aero-engine. However, due to serious service environment of aero-engine, particle erosion performance is a weakness for PS-PVD 7YSZ TBCs. As a solution, an Al-modification approach was proposed in this investigation. Through in-situ reaction of Al and ZrO2, an α-Al2O3 overlay can be formed on the surface of 7YSZ columnar coating. The results demonstrate that this approach can improve particle erosion resistance since hardness improvement of Al-modified TBCs. Meanwhile, as another important performance of thermal cycle, it has a better optimization with 350-cycle water-quenching, compared with the as-sprayed TBCs.}
}