Influence of phase composition on thermal aging behavior of plasma sprayed ytterbium silicate coatings

doi:10.1016/j.ceramint.2018.06.200

	Influence of phase composition on thermal aging behavior of plasma sprayed ytterbium silicate coatings
	Zhu, Tao 1; Niu, Yaran ; Zhong, Xin ; Zhao, Jun ; Liu, Qilian 2; Zeng, Yi 3; Zheng, Xuebin
刊名	CERAMICS INTERNATIONAL
	2018
卷号	44 期号:14 页码:17359
关键词	Ytterbium silicates Atmospheric plasma spray Thermal aging Phase composition Thermomechanical properties
ISSN号	0272-8842
DOI	10.1016/j.ceramint.2018.06.200
英文摘要	In this study, ytterbium silicate coatings with different phase compositions were designed by controlling Yb2O3/SiO2 ratio and fabricated by atmospheric plasma spray (APS) technique. Thermal aging behaviors such as microstructure evolution and thermomechanical properties were focused, and the influence of phase composition was analyzed. Results showed that obvious grain growth and defect reduction occurred, and the thermomechanical properties were significantly modified after thermal aging. The larger reduction in defects and greater increase in elastic modulus, Vickers hardness and coefficient of thermal expansion took place in the Yb2O3-rich coatings containing Yb2O3 and Yb2SiO5 phases. The bigger grains and transgranular cracks were formed and the greater increase in thermal conductivity took place in the SiO2-rich coatings containing Yb2SiO5 and Yb2Si2O7 phases. The relationship among microstructure evolution and variation of thermomechanical properties was analyzed. The results of this study may provide a reference for design and application of rare-earth silicates as environmental barrier coatings (EBCs).
学科主题	Materials Science, Ceramics
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000442714100156
资助机构	This work was supported by Engineering case study in extreme conditions using system mechanics approach (XDB22010202) and Youth Innovation Promotion Association CAS (2014223). ; This work was supported by 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/331005/24651]
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.Aviat Ind Corp China, Mfg Technol Inst, Beijing, Peoples R China 4.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 thermal aging behavior of plasma sprayed ytterbium silicate coatings[J]. CERAMICS INTERNATIONAL,2018,44(14):17359, 17368.
APA	Zhu, Tao.,Niu, Yaran.,Zhong, Xin.,Zhao, Jun.,Liu, Qilian.,...&Zheng, Xuebin.(2018).Influence of phase composition on thermal aging behavior of plasma sprayed ytterbium silicate coatings.CERAMICS INTERNATIONAL,44(14),17359.
MLA	Zhu, Tao,et al."Influence of phase composition on thermal aging behavior of plasma sprayed ytterbium silicate coatings".CERAMICS INTERNATIONAL 44.14(2018):17359.