@article{WANG2022, 
author = {Kailun WANG and Jinpeng ZHU and Hailong WANG and Kaijun YANG and Yameng ZHU and Yubin QING and Zhuang MA and Lihong GAO and Yanbo LIU and Sihao WEI and Yongchun SHU and Yanchun ZHOU and Jilin HE},
title = {Air plasma-sprayed high-entropy (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 coating with high thermal protection performance},
year = {2022},
journal = {Journal of Advanced Ceramics},
volume = {11},
number = {10},
pages = {1571-1582},
keywords = {high-entropy ceramics, thermal protection coating (TPC), (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 (HE-RE3Al5O12), air plasma spraying, thermal protection performance},
url = {https://www.sciopen.com/article/10.1007/s40145-022-0630-2},
doi = {10.1007/s40145-022-0630-2},
abstract = {High-entropy rare-earth aluminate (Y0.2Yb0.2Lu0.2Eu0.2Er0.2)3Al5O12 (HE-RE3Al5O12) has been considered as a promising thermal protection coating (TPC) material based on its low thermal conductivity and close thermal expansion coefficient to that of Al2O3. However, such a coating has not been experimentally prepared, and its thermal protection performance has not been evaluated. To prove the feasibility of utilizing HE-RE3Al5O12 as a TPC, HE-RE3Al5O12 coating was deposited on a nickel-based superalloy for the first time using the atmospheric plasma spraying technique. The stability, surface, and cross-sectional morphologies, as well as the fracture surface of the HE-RE3Al5O12 coating were investigated, and the thermal shock resistance was evaluated using the oxyacetylene flame test. The results show that the HE-RE3Al5O12 coating can remain intact after 50 cycles at 1200 ℃ for 200 s, while the edge peeling phenomenon occurs after 10 cycles at 1400 ℃ for 200 s. This study clearly demonstrates that HE-RE3Al5O12 coating is effective for protecting the nickel-based superalloy, and the atmospheric plasma spraying is a suitable method for preparing this kind of coatings.}
}