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

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	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
刊名	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
	2006
卷号	435 页码:228-236
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
ISSN号	0921-5093
中文摘要	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.
原文出处	://WOS:000241683200030
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/34284]
专题	金属研究所_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.