Preparation of transparent Y2O3 ceramic via gel casting: Realization of high solid volume via surface modification

doi:10.1111/jace.16555

	Preparation of transparent Y2O3 ceramic via gel casting: Realization of high solid volume via surface modification
	Liu, Wei; Jin, Lingling; Wang, Shiwei
刊名	JOURNAL OF THE AMERICAN CERAMIC SOCIETY
	2019-11-01
卷号	102 期号:11 页码:6414
关键词	gel casting optical properties surface modification transparent ceramics yttrium
ISSN号	0002-7820
DOI	10.1111/jace.16555
文献子类	Article
英文摘要	In this article, isocyanate was adopted to modify Y(2)O(3 )powder for the purpose of preparing transparent Y(2)O(3 )ceramics via gel casting. The modification could enhance the hydration resistance of Y(2)O(3 )powder through the steric hindrance effect. The coating mechanism can be proved by the infrared spectrum of the surface-modified Y2O3 powder. Modification could not only prevent Y2O3 particles from reacting with water, but also prevents agglomeration between particles. The viscosity of the slurry with a solid content of 52.7 vol% is only 0.48 Pa center dot s at the shear rate of 100 s(-1), which is suitable for preparing high-density compacts by gel casting. The transmittance of the sample (1840 degrees C x 8 h, 1 mm thickness) at 1100 nm reaches 75%. The microstructure of the sintered body is dense with the average grain size of 6.5 mu m without obvious impurities nor pores. Five mol% ZrO2-doped Y2O3 transparent ceramic fairing with the diameter of 5 cm without defects was successfully fabricated by gel casting (52.7 vol% solid volume) and vacuum sintering (1840 degrees C x 8 h).
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/331005/26746]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Liu, Wei,Jin, Lingling,Wang, Shiwei. Preparation of transparent Y2O3 ceramic via gel casting: Realization of high solid volume via surface modification[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2019,102(11):6414.
APA	Liu, Wei,Jin, Lingling,&Wang, Shiwei.(2019).Preparation of transparent Y2O3 ceramic via gel casting: Realization of high solid volume via surface modification.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,102(11),6414.
MLA	Liu, Wei,et al."Preparation of transparent Y2O3 ceramic via gel casting: Realization of high solid volume via surface modification".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 102.11(2019):6414.