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High-entropy thermal barrier coating of rare-earth zirconate: A case study on (La0.2Nd0.2Sm0.2Eu0.2Gd0.2)(2)Zr2O7 prepared by atmospheric plasma spraying
Zhou, L; Li, F; Liu, JX; Hu, Q; Bao, WC; Wu, Y; Cao, XQ; Xu, FF; Zhang, GJ
2020-12-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Issue15Pages:5731
SubtypeArticle
AbstractWe report a double-ceramic-layer (DCL) thermal barrier coating (TBC) with high-entropy rare-earth zirconate (HE-REZ) as the top layer and yttria stabilized zirconia (YSZ) as the inner layer sprayed on Ni-based superalloy by atmospheric plasma spraying. La2Zr2O7 (LZ) was selected as a reference for the HE-REZ. Thermal cycling test results demonstrate that the HE-REZ/YSZ DCL coating exhibited obviously improved thermal stability when compared to the LZ/YSZ DCL coating. The reasons for the improvement of the thermal shock resistance are considered to be the anti-sinterability of the HE-REZ ceramics during the thermal cycling test attributed to the sluggish diffusion effect and as well as the better match in the coefficient of thermal expansion of HE-REZ coating with the YSZ inner layer. In addition, the HE-REZ coating maintains fluorite structure after thermal cycling test. This study makes one step forward in the development and application of high-entropy rare-earth zirconate ceramic thermal barrier coatings.
DOI10.1016/j.jeurceramsoc.2020.07.061
WOS KeywordCONDUCTIVITY ; LA-2(ZR0.7CE0.3)(2)O-7 ; TRANSITION ; DISORDER ; DESIGN
Language英语
WOS Research AreaMaterials Science
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27604
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Zhou, L,Li, F,Liu, JX,et al. High-entropy thermal barrier coating of rare-earth zirconate: A case study on (La0.2Nd0.2Sm0.2Eu0.2Gd0.2)(2)Zr2O7 prepared by atmospheric plasma spraying[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2020(15):5731.
APA Zhou, L.,Li, F.,Liu, JX.,Hu, Q.,Bao, WC.,...&Zhang, GJ.(2020).High-entropy thermal barrier coating of rare-earth zirconate: A case study on (La0.2Nd0.2Sm0.2Eu0.2Gd0.2)(2)Zr2O7 prepared by atmospheric plasma spraying.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY(15),5731.
MLA Zhou, L,et al."High-entropy thermal barrier coating of rare-earth zirconate: A case study on (La0.2Nd0.2Sm0.2Eu0.2Gd0.2)(2)Zr2O7 prepared by atmospheric plasma spraying".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY .15(2020):5731.
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