Isothermal oxidation and TGO growth behaviors of YAG/YSZ double-ceramic-layer thermal barrier coatings

doi:10.1016/j.ceramint.2021.05.144

	Isothermal oxidation and TGO growth behaviors of YAG/YSZ double-ceramic-layer thermal barrier coatings
	An, Guosheng 1,2; Li, Wensheng 1,2; Feng, Li 1,2; Cheng, Bo 1,2; Wang, Zhiping 1; Li, Ziyu 1; Zhang, Yi 1
刊名	CERAMICS INTERNATIONAL
	2021-09-01
卷号	47 期号:17 页码:24320-24330
关键词	YAG/YSZ TBC TGO High temperature oxidation resistance Oxygen ionic diffusion
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2021.05.144
英文摘要	In this study, yttrium aluminum garnet/yttria-stabilized zirconia (YAG/YSZ) double-ceramic-layer thermal barrier coatings (DCL TBC) and yttria-stabilized zirconia (YSZ) single-ceramic-layer thermal barrier coatings (SCL TBC) were deposited by atmosphere plasma spray (APS) on the Inconel 738 alloy substrate, and isothermal oxidation tests were performed to investigate the formation and growth behavior of thermally grown oxide (TGO). Results showed that the Al2O3 TGO thickness of both TBC groups increased by increasing the isothermal oxidation time,and then slowly decreased with the appearance and growth of the adverse multilayer structure comprising CoCr2O4, (Ni,Co)Al2O4, NiCr2O4, and NiO mixed oxides. However, since the significant inhibition effect of the YAG coating to oxygen ionic diffusion, the mixed oxides appearance time and TGO growth behaviors were delayed in the DCL TBC. As a result, the TGO thickness of the DCL TBC was always smaller than that of the SCL TBC in the entire oxidation process. And the Al2O3 layer thickness proportion in the total TGO of the DCL TBC was greater than or equal to that of the SCL TBC after oxidation for the same period. The results of weight gain showed that compared with the SCL TBC, the parabolic oxidation rate of the DCL TBC was decreased approximately 35%. Consequently, the DCL TBC has better high-temperature oxidation resistance than the SCL TBC.
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000677906900004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148561]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China;
推荐引用方式 GB/T 7714	An, Guosheng,Li, Wensheng,Feng, Li,et al. Isothermal oxidation and TGO growth behaviors of YAG/YSZ double-ceramic-layer thermal barrier coatings[J]. CERAMICS INTERNATIONAL,2021,47(17):24320-24330.
APA	An, Guosheng.,Li, Wensheng.,Feng, Li.,Cheng, Bo.,Wang, Zhiping.,...&Zhang, Yi.(2021).Isothermal oxidation and TGO growth behaviors of YAG/YSZ double-ceramic-layer thermal barrier coatings.CERAMICS INTERNATIONAL,47(17),24320-24330.
MLA	An, Guosheng,et al."Isothermal oxidation and TGO growth behaviors of YAG/YSZ double-ceramic-layer thermal barrier coatings".CERAMICS INTERNATIONAL 47.17(2021):24320-24330.