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Effect of Microstructure on the Thermal Conductivity of Plasma Sprayed Y2O3 Stabilized Zirconia (8% YSZ)
Hu, Ningning1; Khan, Matiullah1,2; Wang, Yongzhe1; Song, Xuemei1; Lin, Chucheng1; Chang, Chengkang; Zeng, Yi1
2017
发表期刊COATINGS
ISSN2079-6412
卷号7期号:11
摘要In this paper, the effect of microstructure on the thermal conductivity of plasma-sprayed Y2O3 stabilized ZrO2 (YSZ) thermal barrier coatings (TBCs) is investigated. Nine freestanding samples deposited on aluminum alloys are studied. Cross-section morphology such as pores, cracks, m-phase content, grain boundary density of the coated samples are examined by scanning electron microscopy (SEM) and electron back-scattered diffraction (EBSD). Multiple linear regressions are used to develop quantitative models that describe the relationship between the particle parameters, m-phase content and features of the microstructure such as porosity, crack-porosity, and the length density of small and big angle-cracks. Moreover, the relationship between the microstructure and thermal conductivity is investigated. Results reveal that the thermal conductivity of the coating is mainly determined by the microstructure and grain boundary density at room temperature (25 degrees C), and by the length density of big-angle-crack, monoclinic phase content and grain boundary density at high temperature (1200 degrees C).
DOI10.3390/coatings7110198
WOS记录号WOS:000416595700021
引用统计
文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/26635
专题中国科学院上海硅酸盐研究所
作者单位1.Shanghai Inst Technol, Sch Mat Sci & Engn, Shanghai 201418, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
3.Kohat Univ Sci & Technol, Dept Phys, Kohat 26000, Pakistan
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Hu, Ningning,Khan, Matiullah,Wang, Yongzhe,et al. Effect of Microstructure on the Thermal Conductivity of Plasma Sprayed Y2O3 Stabilized Zirconia (8% YSZ)[J]. COATINGS,2017,7(11).
APA Hu, Ningning.,Khan, Matiullah.,Wang, Yongzhe.,Song, Xuemei.,Lin, Chucheng.,...&Zeng, Yi.(2017).Effect of Microstructure on the Thermal Conductivity of Plasma Sprayed Y2O3 Stabilized Zirconia (8% YSZ).COATINGS,7(11).
MLA Hu, Ningning,et al."Effect of Microstructure on the Thermal Conductivity of Plasma Sprayed Y2O3 Stabilized Zirconia (8% YSZ)".COATINGS 7.11(2017).
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