Large-sized La2O3-TiO2 high refractive glasses with low SiO2 fraction by hot-press sintering

doi:10.1111/ijag.13154

	Large-sized La2O3-TiO2 high refractive glasses with low SiO2 fraction by hot-press sintering
	Han, Jianjun 1; Wang, Zhui 1,2; Li, Jianqiang 2; Li, Xiaoyu 2; Li, Jiangtao 3; He, Gang 3; Xie, Jun 1
刊名	INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
	2019-07-01
卷号	10 期号:3 页码:371-377
关键词	containerless solidification glass high refractive index hot-pressed sintering La2O3-TiO2
ISSN号	2041-1286
DOI	10.1111/ijag.13154
英文摘要	Owing to the ultrahigh refractive index, La2O3-TiO2 glass is regarded as a promising candidate material in the field of lens, gemstones, and many other optics. However, due to its extremely low glass-forming ability, it can only be obtained by rapid solidification processes such as melt quench or containerless solidification methods, leading to the limited size of as-solidified products (for example, 1-10 mm for containerless solidified sample), that are severely deferring the application of this novel high refractive glass. In this work, we aimed at preparing the larger sized bulk glasses over 10 mm, La2O3-TiO2 glasses were successfully prepared by hot-press sintering within the glass kinetic window. A small amount addition of SiO2 was found to effectively increase the glass-forming ability while keeping high refractive index. When the content of SiO2 was 15 mol%, its transmittance could reach 54% at 800 nm and 72% in the infrared region (1 mm thick). Meanwhile, its refractive index could keep ultrahigh value above 2.14. And the sintering mechanism was studied according to the sintering shrinkage curve. It indicates that the plastic flow was the main mass transfer way in the densification process.
资助项目	National Natural Science Foundation of China[51432004] ; National Natural Science Foundation of China[51471158] ; National Natural Science Foundation of China[51674232]
WOS关键词	CERAMICS ; NANOCERAMICS ; FABRICATION ; INDEX ; BULK
WOS研究方向	Materials Science
语种	英语
出版者	WILEY PERIODICALS, INC
WOS记录号	WOS:000470786300010
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/29937]
专题	中国科学院过程工程研究所
通讯作者	Li, Jianqiang
作者单位	1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing, Peoples R China 2.Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan, Hubei, Peoples R China 3.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Han, Jianjun,Wang, Zhui,Li, Jianqiang,et al. Large-sized La2O3-TiO2 high refractive glasses with low SiO2 fraction by hot-press sintering[J]. INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE,2019,10(3):371-377.
APA	Han, Jianjun.,Wang, Zhui.,Li, Jianqiang.,Li, Xiaoyu.,Li, Jiangtao.,...&Xie, Jun.(2019).Large-sized La2O3-TiO2 high refractive glasses with low SiO2 fraction by hot-press sintering.INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE,10(3),371-377.
MLA	Han, Jianjun,et al."Large-sized La2O3-TiO2 high refractive glasses with low SiO2 fraction by hot-press sintering".INTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE 10.3(2019):371-377.