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Preparation of transparent Y2O3 ceramic via gel casting: Realization of high solid volume via surface modification
Liu, Wei; Jin, Lingling; Wang, Shiwei
2019-11-01
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
Volume102Issue:11Pages:6414
SubtypeArticle
AbstractIn 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).
Keywordgel casting optical properties surface modification transparent ceramics yttrium
DOI10.1111/jace.16555
Language英语
WOS Research AreaMaterials Science
PublisherWILEY
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/26746
Collection中国科学院上海硅酸盐研究所
Recommended Citation
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.
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