Failure Behavior of Plasma-Sprayed Yttria-Stabilized Zirconia Thermal Barrier Coatings Under Three-Point Bending Test via Acoustic Emission Technique

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	Failure Behavior of Plasma-Sprayed Yttria-Stabilized Zirconia Thermal Barrier Coatings Under Three-Point Bending Test via Acoustic Emission Technique
	Wang, L.1; Ni, J. X.1; Shao, F.1; Yang, J. S.1,2; Zhong, X. H.1; Zhao, H. Y.1; Liu, C. G.1; Tao, S. Y.1; Wang, Y.3; Li, D. Y.4
刊名	JOURNAL OF THERMAL SPRAY TECHNOLOGY
	2017
卷号	26 期号:1-2 页码:116-131
关键词	acoustic emission (AE) failure plasma spraying thermal barrier coatings three-point bending (3PB)
英文摘要	In this paper, the failure behavior of plasma-sprayed yttria-stabilized zirconia thermal barrier coatings fabricated by atmospheric plasma spraying (APS-TBCs) under three-point bending (3PB) test has been characterized via acoustic emission (AE) technique. Linear positioning method has been adopted to monitor dynamic failure process of the APS-TBCs under 3PB test. The investigation results indicate that the variation of AE parameters (AE event counts, amplitudes and AE energy) corresponds well with the change of stress-strain curve of the loading processes. The failure mechanism was analyzed based on the characteristics of AE parameters. The distribution of frequency of crack propagation has been obtained. The AE signals came from two aspects: i.e., plastic deformation of substrates, initiation and propagation of the cracks in the coatings. The AE analysis combined with cross-sectional observation has indicated that many critical cracks initiate at the surface of the top-coat. And some main cracks tend to propagate toward the substrate/bond-coat interface. The actual failure mechanism of the APS-TBCs under 3PB test is attributed to the debonding of metallic coating from the substrates and the propagation of the horizontal crack along the substrate/bond-coat interface under the action of flexural moment.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Coatings & Films
研究领域[WOS]	Materials Science
关键词[WOS]	IMPEDANCE SPECTROSCOPY ; BOND COAT ; PS-PVD ; CYCLING BEHAVIOR ; DURABILITY ; SUSPENSION ; TGO
收录类别	SCI ; ISTP
语种	英语
WOS记录号	WOS:000392060300012
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/23374]
专题	上海硅酸盐研究所_特种无机涂层重点实验室_期刊论文
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat CAS, Shanghai 201899, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Harbin Inst Technol, Sch Mat Sci & Engn, Lab Nano Surface Engn, Harbin 150001, Peoples R China 4.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G2V4, Canada
推荐引用方式 GB/T 7714	Wang, L.,Ni, J. X.,Shao, F.,et al. Failure Behavior of Plasma-Sprayed Yttria-Stabilized Zirconia Thermal Barrier Coatings Under Three-Point Bending Test via Acoustic Emission Technique[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY,2017,26(1-2):116-131.
APA	Wang, L..,Ni, J. X..,Shao, F..,Yang, J. S..,Zhong, X. H..,...&Li, D. Y..(2017).Failure Behavior of Plasma-Sprayed Yttria-Stabilized Zirconia Thermal Barrier Coatings Under Three-Point Bending Test via Acoustic Emission Technique.JOURNAL OF THERMAL SPRAY TECHNOLOGY,26(1-2),116-131.
MLA	Wang, L.,et al."Failure Behavior of Plasma-Sprayed Yttria-Stabilized Zirconia Thermal Barrier Coatings Under Three-Point Bending Test via Acoustic Emission Technique".JOURNAL OF THERMAL SPRAY TECHNOLOGY 26.1-2(2017):116-131.