Progressive damage during thermal shock cycling of D-gun sprayed thermal barrier coatings with hollow spherical ZrO2-8Y(2)O(3)

IMR OpenIR

	Progressive damage during thermal shock cycling of D-gun sprayed thermal barrier coatings with hollow spherical ZrO2-8Y(2)O(3)
	P. L. Ke; Q. M. Wang; J. Gong; C. Sun; Y. C. Zhou
	2006
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	435 页码:228-236
摘要	Thermal shock cycling behaviors of D-gun sprayed TBCs with a hollow spherical ZrO2-8y(2)O(3) (HSP-YSZ) top coat and NiCrAlY bond coat on directionally solidified Ni-base superalloys DZ125 were investigated at high temperature (1100 degrees C) <-> room temperature (RT) repeatedly by water quenching. Scanning electron microscopy (SEM) was used to characterize the coating microstructure and failure morphology. The results showed that failure of the D-gun sprayed TBC starts with crack initiation along the splats boundary in the ceramic top coat and the non-alumina oxides. The cracks propagate and coalesce with the increasing thermal cycling. The extensive cracking of the rapidly formed non-alumina oxides, resulting from the depletion of aluminum in the bond coat, aids to delamination of the outer ceramic layer. The stress distributions in TGO layer at different thermal shock cycles was measured by luminescence spectroscopy to investigate the failure mechanism of TBC system. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china. univ birmingham, sch met & mat, birmingham b15 2tt, w midlands, england.;ke, pl (reprint author), chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china;csun@imr.ac.cn
关键词	Thermal Barrier Coatings Detonation Gun Spraying Failure Mechanism Stress Distribution Luminescence Spectroscopy Residual-stresses Bond Coats Oxidation Mechanisms Evolution Oxide Instability Spallation Behavior Failure
URL	查看原文
WOS记录号	WOS:000241683200030
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34284
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	P. L. Ke,Q. M. Wang,J. Gong,et al. Progressive damage during thermal shock cycling of D-gun sprayed thermal barrier coatings with hollow spherical ZrO2-8Y(2)O(3)[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2006,435:228-236.
APA	P. L. Ke,Q. M. Wang,J. Gong,C. Sun,&Y. C. Zhou.(2006).Progressive damage during thermal shock cycling of D-gun sprayed thermal barrier coatings with hollow spherical ZrO2-8Y(2)O(3).Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,435,228-236.
MLA	P. L. Ke,et al."Progressive damage during thermal shock cycling of D-gun sprayed thermal barrier coatings with hollow spherical ZrO2-8Y(2)O(3)".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 435(2006):228-236.