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Effect of La2O3 on Microstructure and Thermal Conductivity of La2O3-Doped YSZ Coatings
Guo, Xiaojie; Lin, Chucheng; Zhang, Jimei; Liu, Ziwei; Jiang, Caifen; Zheng, Wei; Zeng, Yi
2019-09-01
Source PublicationMATERIALS
Volume12Issue:18
SubtypeArticle
AbstractEnhancing the properties of thermal barrier coatings (TBCs) by doping with rare earth elements has been a hot topic for a while. La2O3 and Y2O3 co-doped ZrO2 (La-YSZ) TBCs and yttria-stabilized zirconia (YSZ) TBCs were deposited by atmospheric plasma spraying (APS), and the comprehensive effects of La3+ on the microstructure and property were investigated. The thermal conductivity and microstructure were investigated and were compared with YSZ. The recrystallized fraction components of all TBCs were quantified. It is clearly found that the component of "recrystallized" and "deformed" grains for La-YSZ TBCs is much higher than that for YSZ TBCs. This could be due to La3+ doping enlarging the lattice parameter of YSZ and thus increasing the melting index, which in turns leads to the smaller grain size of La-YSZ TBCs. As a result, the thermal conductivities of La-YSZ TBCs were distinctly lower than those of YSZ TBCs.
Keywordthermal conductivity recrystallized grains melting grain size
DOI10.3390/ma12182966
Language英语
WOS Research AreaMaterials Science
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26857
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Guo, Xiaojie,Lin, Chucheng,Zhang, Jimei,et al. Effect of La2O3 on Microstructure and Thermal Conductivity of La2O3-Doped YSZ Coatings[J]. MATERIALS,2019,12(18).
APA Guo, Xiaojie.,Lin, Chucheng.,Zhang, Jimei.,Liu, Ziwei.,Jiang, Caifen.,...&Zeng, Yi.(2019).Effect of La2O3 on Microstructure and Thermal Conductivity of La2O3-Doped YSZ Coatings.MATERIALS,12(18).
MLA Guo, Xiaojie,et al."Effect of La2O3 on Microstructure and Thermal Conductivity of La2O3-Doped YSZ Coatings".MATERIALS 12.18(2019).
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