Phase evolution of reactive sputtering synthesized holmium silicate coatings

doi:10.1111/jace.15930

	Phase evolution of reactive sputtering synthesized holmium silicate coatings
	Hu, Wanpeng; Zhang, Jie; Nian, Hongqiang; Wang, Jingyang
刊名	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
	2019
卷号	102 期号:1 页码:490
关键词	environmental barrier coatings holmium silicates phase evolution stoichiometry
ISSN号	0002-7820
DOI	10.1111/jace.15930
文献子类	Article
英文摘要	Holmium silicates are promising environmental barrier coatings (EBCs) materials for Si-based non-oxide ceramics due to their excellent thermal and mechanical properties. In the present work, the phase evolution of holmium silicate coatings synthesized by reactive sputtering was systematically studied. The monosilicate crystallized in an X1-Ho2SiO5 phase at 1000 degrees C and transformed to an X2-Ho2SiO5 phase at 1200 degrees C. The phase transition is not problematic for the coating process because the X1- and X-2-Ho2SiO5 phases have similar coefficients of thermal expansion (CTEs). For the holmium disilicates, the stoichiometry obviously influenced polymorphic phase evolutions. Relatively Ho2O3-rich compounds promoted the formation of gamma-Ho2Si2O7 phase at lower temperatures. This study on phase evolution vs temperature and stoichiometry can provide a guideline to optimize the processing and the properties of advanced holmium silicate EBCs.
WOS研究方向	Materials Science
语种	英语
出版者	WILEY
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27420]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Hu, Wanpeng,Zhang, Jie,Nian, Hongqiang,et al. Phase evolution of reactive sputtering synthesized holmium silicate coatings[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2019,102(1):490.
APA	Hu, Wanpeng,Zhang, Jie,Nian, Hongqiang,&Wang, Jingyang.(2019).Phase evolution of reactive sputtering synthesized holmium silicate coatings.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,102(1),490.
MLA	Hu, Wanpeng,et al."Phase evolution of reactive sputtering synthesized holmium silicate coatings".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 102.1(2019):490.