Evaluation of hot-fatigue behaviors of EB-PVD gradient thermal barrier coatings

IMR OpenIR

	Evaluation of hot-fatigue behaviors of EB-PVD gradient thermal barrier coatings
	Guo, HB ; Gong, SK ; Xu, HB
通讯作者	Xu, HB()
	2002-02-28
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	325 期号:1-2 页码:261-269
摘要	Gradient thermal barrier coatings (GTBCs) were prepared by co-deposition of a tablet of mixtures of Al-Al2O3-YSZ and Yttria Stabilized Zirconia (YSZ) onto NiCoCrAlY bond coat by means of electron beam physical vapor deposition (EB-PVD). It was found that the microstructure gradually transferred from metallic bond coat to YSZ topcoat and composition distribution changed continuously through the thickness of the coating. The coating exhibited a good resistance not only to high temperature oxidation but also to cyclic corrosion. Thermal cycling tests for the coatings have demonstrated promising results of lifetimes more than 1000 cycles. A finite element method, numerical model, was employed to study the stresses developed in the coating when cooling to 50 degreesC from a stress-free state at 850 degreesC. The results demonstrate that the Al2O3-YSZ graded layer in the GTBC provided a large reduction in stress and stress gradient. Furthermore, the gradient layer is the crucial location that determines the lifetime of the gradient coating. (C) 2002 Elsevier Science B.V. All rights reserved.
关键词	gradient thermal barrier coatings (GTBCs) electron beam physical vapor deposition (EB-PVD) hot-fatigue behaviors finite element analysis (FEA)
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000174080600033
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：21[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/321006/126914
专题	中国科学院金属研究所
通讯作者	Xu, HB
作者单位	1.Beijing Univ Aeronaut & Astronaut, Coll Mat Sci & Engn, Beijing 100083, Peoples R China 2.Beijing Univ Aeronaut & Astronaut, State Key Lab Corros & Protect, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Guo, HB,Gong, SK,Xu, HB. Evaluation of hot-fatigue behaviors of EB-PVD gradient thermal barrier coatings[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2002,325(1-2):261-269.
APA	Guo, HB,Gong, SK,&Xu, HB.(2002).Evaluation of hot-fatigue behaviors of EB-PVD gradient thermal barrier coatings.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,325(1-2),261-269.
MLA	Guo, HB,et al."Evaluation of hot-fatigue behaviors of EB-PVD gradient thermal barrier coatings".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 325.1-2(2002):261-269.