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Achieving low thermal conductivity in Sr(Zr0.9Yb0.05Gd0.05)O-2.95: A suitable material for high temperature applications
Khan, M; Zeng, Y
2020-12-15
Source PublicationCERAMICS INTERNATIONAL
ISSN0272-8842
Issue18Pages:28778
SubtypeArticle
AbstractSubstitutional point defects alter the thermal conductivity of ABO(3) type compound by influencing the phonon scattering. Coatings of Sr(Zr0.9Yb0.05Gd0.05)O-2.95 are prepared with different processing parameters and then characterized using XRD, EDS, EBSD and SEM. XRD analysis confirmed that SrZrO3 is the major phase. Microsticks oriented in different directions are found from the SEM observations. The existence of Yb (1.79 wt %) and Gd (5.82 wt %) in the Sr(Zr0.9Yb0.05Gd0.05)O-2.95 coating is confirmed from the EDS analysis. Electron back scattered diffraction investigation demonstrated that majority of grains are in 0.3-0.6 mu m range. Among the coatings prepared with different processing parameters, the Sr(Zr0.9Yb0.05Gd0.05)O-2.95-2 coatings with the Ar (L/min) and H-2 (L/min) flow of 35 and 7 provided minimum thermal conductivity. The lower thermal conductivity of the coating is attributed to the concentration of point defects and the optimal processing parameters.
DOI10.1016/j.ceramint.2020.08.040
WOS KeywordLZC/YSZ DCL TBCS ; STRONTIUM ZIRCONATE ; EB-PVD ; MICROSTRUCTURE ; PEROVSKITE ; EVOLUTION ; FAILURE
Language英语
WOS Research AreaMaterials Science
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27583
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Khan, M,Zeng, Y. Achieving low thermal conductivity in Sr(Zr0.9Yb0.05Gd0.05)O-2.95: A suitable material for high temperature applications[J]. CERAMICS INTERNATIONAL,2020(18):28778.
APA Khan, M,&Zeng, Y.(2020).Achieving low thermal conductivity in Sr(Zr0.9Yb0.05Gd0.05)O-2.95: A suitable material for high temperature applications.CERAMICS INTERNATIONAL(18),28778.
MLA Khan, M,et al."Achieving low thermal conductivity in Sr(Zr0.9Yb0.05Gd0.05)O-2.95: A suitable material for high temperature applications".CERAMICS INTERNATIONAL .18(2020):28778.
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