Segregation and microstructural evolution at interfaces of atmospheric plasma sprayed thermal barrier coatings during thermal cycling

doi:10.1016/j.jallcom.2019.153026

IMR OpenIR

	Segregation and microstructural evolution at interfaces of atmospheric plasma sprayed thermal barrier coatings during thermal cycling
	Liu, Y. Z.1,2; Hu, X. B.2,3
通讯作者	Liu, Y. Z.(yzliu10b@alum.imr.ac.cn) ; Hu, X. B.(xbhu@northwestern.edu)
	2020-04-05
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	819 页码:13
摘要	Segregation and microstructural evolution at interfaces of thermal barrier coatings (TBCs) during thermal cycling were systematically investigated using scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The as-sprayed TBCs were thermally cycled between 1100 degrees C and ambient temperature up to 3000 cycles. Results show that phosphorus, sulfur, and yttrium co-segregate at the top coat (TC)/bond coat (BC) interface after 3000 cycles. The above co-segregation at the BC/substrate interface was delayed by 1000 cycles. Chemical components of thermally grown oxide (TGO) layers at both the TC/BC and BC/substrate interfaces change from O and Al to O, Al, Cr, Co and Ni as the thermal cycling proceeded. The corresponding oxides in the TGO layers evolved from alpha-Al2O3 to alpha-Al2O3, Cr2O3, NiO and spinel phases. Controlled by the element diffusion rate and selective internal oxidation, evolution of the thickness of the TGO layers followed a natural logarithmic law. (C) 2019 Elsevier B.V. All rights reserved.
关键词	Thermal barrier coatings (TBCs) Microstructural evolution Interfacial oxidation Oxidation kinetics Element segregation Scanning transmission electron microscopy (STEM)
资助者	Natural Science Foundation of Zhejiang Province ; Natural Science Foundation of Ningbo Municipality ; Joint Funds of NSFC-ZJ
DOI	10.1016/j.jallcom.2019.153026
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Zhejiang Province[LY18E050027] ; Natural Science Foundation of Ningbo Municipality[2018A610145] ; Joint Funds of NSFC-ZJ[U1609208]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000507378300131
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：11[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/321006/136681
专题	中国科学院金属研究所
通讯作者	Liu, Y. Z.; Hu, X. B.
作者单位	1.Ningbo Univ Technol, Sch Mech Engn, Ningbo 315336, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA
推荐引用方式 GB/T 7714	Liu, Y. Z.,Hu, X. B.. Segregation and microstructural evolution at interfaces of atmospheric plasma sprayed thermal barrier coatings during thermal cycling[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2020,819:13.
APA	Liu, Y. Z.,&Hu, X. B..(2020).Segregation and microstructural evolution at interfaces of atmospheric plasma sprayed thermal barrier coatings during thermal cycling.JOURNAL OF ALLOYS AND COMPOUNDS,819,13.
MLA	Liu, Y. Z.,et al."Segregation and microstructural evolution at interfaces of atmospheric plasma sprayed thermal barrier coatings during thermal cycling".JOURNAL OF ALLOYS AND COMPOUNDS 819(2020):13.