Relationship between cracks and microstructures in APS YSZ coatings at elevated temperatures

doi:10.1016/j.matchar.2017.07.008

	Relationship between cracks and microstructures in APS YSZ coatings at elevated temperatures
	Song, Xuemei 1; Meng, Fangli 1; Kong, Mingguang 2; Liu, Ziwei 1; Huang, Liping 3; Zheng, Xuebin 3; Zeng, Yi 1,4
刊名	Materials Characterization
	2017
卷号	131 页码:277-284
ISSN号	10445803
DOI	10.1016/j.matchar.2017.07.008
英文摘要	Yttria-stabilized zirconia (YSZ) thermal barrier coatings (TBCs) were prepared by plasma spraying. Thermally grown oxide (TGO) was formed between the YSZ layer and the bond coat during heat treatment of the YSZ TBCs. The generation and extension behavior of cracks before and after heat treatment were characterized by scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) combined with 3D reconstruction technology. The characterization results give a direct evidence that the generation and extension of cracks is closely related to other microstructures such as columnar grains, TGO morphology, TGO composition, and TGO orientation. For example, large interlaminar cracks in as-sprayed YSZ coatings often appeared along with columnar grains, which can be explained by their similar formation conditions. The formation of new cracks such as vertical cracks, plane cracks and other cracks along the TGO grain boundary after heat treatment often resulted from TGO growth stresses. Therefore, the generation and extension of cracks can be controlled by regulating the formation of columnar grains and TGO. © 2017 Elsevier Inc.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25901]
专题	中国科学院上海硅酸盐研究所
作者单位	1.The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 2.Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei; 230031, China; 3.Key Laboratory of Inorganic Coating Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 4.CAS Center for Excellence in Superconducting Electronics (CENSE), Shanghai; 200050, China
推荐引用方式 GB/T 7714	Song, Xuemei,Meng, Fangli,Kong, Mingguang,et al. Relationship between cracks and microstructures in APS YSZ coatings at elevated temperatures[J]. Materials Characterization,2017,131:277-284.
APA	Song, Xuemei.,Meng, Fangli.,Kong, Mingguang.,Liu, Ziwei.,Huang, Liping.,...&Zeng, Yi.(2017).Relationship between cracks and microstructures in APS YSZ coatings at elevated temperatures.Materials Characterization,131,277-284.
MLA	Song, Xuemei,et al."Relationship between cracks and microstructures in APS YSZ coatings at elevated temperatures".Materials Characterization 131(2017):277-284.