Influence of phase composition on microstructure and thermal properties of ytterbium silicate coatings deposited by atmospheric plasma spray

doi:10.1016/j.jeurceramsoc.2018.04.047

	Influence of phase composition on microstructure and thermal properties of ytterbium silicate coatings deposited by atmospheric plasma spray
	Zhu, Tao 1; Niu, Yaran ; Zhong, Xin ; Zhao, Jun ; Zeng, Yi 2; Zheng, Xuebin ; Ding, Chuanxian
刊名	JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
	2018
卷号	38 期号:11 页码:3974
关键词	Rare-earth silicates Environmental barrier coatings Atmospheric plasma spray Microstructure Thermal properties
ISSN号	0955-2219
DOI	10.1016/j.jeurceramsoc.2018.04.047
英文摘要	In this study, ytterbium silicate coatings with different compositions were designed by controlling the Yb2O3/SiO2 ratio and fabricated by atmospheric plasma spray. The microstructure and thermal properties of these coatings were characterized. Results showed that the Yb2O3-rich coatings contained Yb2O3 and Yb2SiO5 phases, which were characterized by Yb2O3 columnar grains, obvious interfaces between splats and many microcracks. The SiO2-rich coatings were composed of Yb2SiO5 and Yb2Si2O2 phases, which were composed of well bonded splats with many spherical pores. The Yb2O3-rich coatings had higher coefficient of thermal expansion values and lower thermal conductivities than the SiO2-rich coatings. The SiO2-rich coatings presented much better thermal cycling resistance than the Yb2O3-rich coatings. The relationship among phase composition, microstructure and thermal properties of ytterbium silicate coatings was analyzed. The results of this study may provide some clues for designs and applications of rare-earth silicates as environmental barrier coatings.
学科主题	Materials Science, Ceramics
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000435428700030
资助机构	This work was supported by Basic Research of the Ministry of Science and Technology of The Chinese Academy of Sciences (CXJJ-17S076), Engineering case study in extreme conditions using system mechanics approach (XDB22010202) and Youth Innovation Promotion Association CAS (2014223). ; This work was supported by Basic Research of the Ministry of Science and Technology of The Chinese Academy of Sciences (CXJJ-17S076), Engineering case study in extreme conditions using system mechanics approach (XDB22010202) and Youth Innovation Promotion Association CAS (2014223).
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/24703]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat CAS, Shanghai 200050, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Ceram, Struct Ceram & Composites Engn Res Ctr, Shanghai 200050, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Tao,Niu, Yaran,Zhong, Xin,et al. Influence of phase composition on microstructure and thermal properties of ytterbium silicate coatings deposited by atmospheric plasma spray[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2018,38(11):3974, 3985.
APA	Zhu, Tao.,Niu, Yaran.,Zhong, Xin.,Zhao, Jun.,Zeng, Yi.,...&Ding, Chuanxian.(2018).Influence of phase composition on microstructure and thermal properties of ytterbium silicate coatings deposited by atmospheric plasma spray.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,38(11),3974.
MLA	Zhu, Tao,et al."Influence of phase composition on microstructure and thermal properties of ytterbium silicate coatings deposited by atmospheric plasma spray".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 38.11(2018):3974.