Effect of La2O3 on Microstructure and Thermal Conductivity of La2O3-Doped YSZ Coatings

doi:10.3390/ma12182966

	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
刊名	MATERIALS
	2019-09-01
卷号	12 期号:18
关键词	thermal conductivity recrystallized grains melting grain size
DOI	10.3390/ma12182966
文献子类	Article
英文摘要	Enhancing 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.
WOS研究方向	Materials Science
语种	英语
出版者	MDPI
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/26857]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 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).