Pore filling behavior of YSZ under CMAS attack: Implications for designing corrosion-resistant thermal barrier coatings

doi:10.1111/jace.15790

	Pore filling behavior of YSZ under CMAS attack: Implications for designing corrosion-resistant thermal barrier coatings
	Shan, Xiao 1; Luo, Lirong 1; Chen, Wenfu 1; Zou, Zhonghua 1; Guo, Fangwei 1; He, Limin 2; Zhang, Aiping 3; Zhao, Xiaofeng 1; Xiao, Ping 1,4
刊名	Journal of the American Ceramic Society
	2018
卷号	101 期号:12 页码:5756-5770
ISSN号	00027820
DOI	10.1111/jace.15790
英文摘要	To understand the pore filling behavior in thermal barrier coatings during calcium-magnesium-alumino-silicate (CMAS) infiltration process, porous yttria-stabilized zirconia pellets with different sizes of spherical pores were prepared to simulate thermal barrier coatings. The pores (D50 ranging from 6 to 77 μm) were introduced to the pellets using poly methyl methacrylate as pore forming agents. Then the pellets were sintered to remove the pore forming agents and to achieve a similar volume fraction of porosity with thermal barrier coatings. After CMAS infiltration, only some small pores in the CMAS-infiltrated zones were filled by CMAS, whereas all large pores (larger than 13 μm) remained unfilled; besides, the results also show that even open pores can resist filling by CMAS. The reason may relate to pore diameters; if the diameter of a pore is relatively large, the pore surface will not be completely wetted by liquid CMAS, the liquid meniscus will be discontinuous, and therefore the pore cannot be filled. The key insight gained from this study is that introducing “CMAS-proof” pores into thermal barrier coatings may be a potential way to mitigate CMAS damage. © 2018 The American Ceramic Society
出版者	Blackwell Publishing Inc.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25176]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming, Shanghai Jiao Tong University, Shanghai, China; 2.Beijing Institute of Aeronautical Materials, Beijing, China; 3.Konca Solar Cells Co., Ltd, Wuxi, China; 4.School of Materials, University of Manchester, Oxford Road, Manchester, United Kingdom
推荐引用方式 GB/T 7714	Shan, Xiao,Luo, Lirong,Chen, Wenfu,et al. Pore filling behavior of YSZ under CMAS attack: Implications for designing corrosion-resistant thermal barrier coatings[J]. Journal of the American Ceramic Society,2018,101(12):5756-5770.
APA	Shan, Xiao.,Luo, Lirong.,Chen, Wenfu.,Zou, Zhonghua.,Guo, Fangwei.,...&Xiao, Ping.(2018).Pore filling behavior of YSZ under CMAS attack: Implications for designing corrosion-resistant thermal barrier coatings.Journal of the American Ceramic Society,101(12),5756-5770.
MLA	Shan, Xiao,et al."Pore filling behavior of YSZ under CMAS attack: Implications for designing corrosion-resistant thermal barrier coatings".Journal of the American Ceramic Society 101.12(2018):5756-5770.