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Quantitative Calculation of Thermal Conductivity of Tetragonal Phase and Grain Boundary on Zirconia Ceramics
Zhao, Wei-Wei1,2; Chen, Xiao-Xin3; Lin, Chu-Cheng2; Song, Xue-Mei2; Zeng, Yi2; Chang, Cheng-Kang1
2017
Source PublicationWuji Cailiao Xuebao/Journal of Inorganic Materials
ISSN1000324X
Volume32Issue:11Pages:1177-1180
AbstractThe yttria-stabilized zirconia (YSZ) coatings have been widely used as thermal barrier coatings (TBCs). In order to investigate the factors that influenced the thermal conductivity of TBCs, bulk YSZ ceramics with different grain sizes were prepared via hot-pressing sintering methods under different annealing conditions. The quantitative effects of the phase and the grain size on the thermal conductivity were analyzed. Based on electron backscatter diffraction images (EBSD) of YSZ ceramics, the distribution of grain boundaries and tetragonal phase were obtained. And thermal conductivities of grain boundaries and tetragonal phase were calculated by finite element models and Fourier's equation. The thermal conductivities of grain boundaries and tetragonal phase are 2.65 W/(m·K) and 1.54 W/(m·K), respectively. The results reveal that the thermal conductivity of tetragonal phase is higher than that of the YSZ ceramic (2.31 W/(m·K)), while grain boundary's is lower than that of the YSZ ceramic. © 2017, Science Press. All right reserved.
DOI10.15541/jim20170046
EI Accession Number20181304944964
EI KeywordsThermal conductivity
EI Classification Number641.1 Thermodynamics - 804.2 Inorganic Compounds - 812.1 Ceramics - 921.6 Numerical Methods
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/25719
Collection中国科学院上海硅酸盐研究所
Affiliation1.School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai; 200235, China;
2.Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
3.School of Material Science and Engineering, Jiangsu University, Zhenjiang; 212013, China
Recommended Citation
GB/T 7714
Zhao, Wei-Wei,Chen, Xiao-Xin,Lin, Chu-Cheng,et al. Quantitative Calculation of Thermal Conductivity of Tetragonal Phase and Grain Boundary on Zirconia Ceramics[J]. Wuji Cailiao Xuebao/Journal of Inorganic Materials,2017,32(11):1177-1180.
APA Zhao, Wei-Wei,Chen, Xiao-Xin,Lin, Chu-Cheng,Song, Xue-Mei,Zeng, Yi,&Chang, Cheng-Kang.(2017).Quantitative Calculation of Thermal Conductivity of Tetragonal Phase and Grain Boundary on Zirconia Ceramics.Wuji Cailiao Xuebao/Journal of Inorganic Materials,32(11),1177-1180.
MLA Zhao, Wei-Wei,et al."Quantitative Calculation of Thermal Conductivity of Tetragonal Phase and Grain Boundary on Zirconia Ceramics".Wuji Cailiao Xuebao/Journal of Inorganic Materials 32.11(2017):1177-1180.
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