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Large-sized La2O3-TiO2 high refractive glasses with low SiO2 fraction by hot-press sintering
Han, Jianjun1; Wang, Zhui1,2; Li, Jianqiang2; Li, Xiaoyu2; Li, Jiangtao3; He, Gang3; Xie, Jun1
2019-07-01
Source PublicationINTERNATIONAL JOURNAL OF APPLIED GLASS SCIENCE
ISSN2041-1286
Volume10Issue:3Pages:371-377
AbstractOwing 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.
Keywordcontainerless solidification glass high refractive index hot-pressed sintering La2O3-TiO2
DOI10.1111/ijag.13154
Language英语
WOS KeywordCERAMICS ; NANOCERAMICS ; FABRICATION ; INDEX ; BULK
Funding ProjectNational Natural Science Foundation of China[51432004] ; National Natural Science Foundation of China[51471158] ; National Natural Science Foundation of China[51674232]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000470786300010
PublisherWILEY PERIODICALS, INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/29938
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Jianqiang
Affiliation1.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
Recommended Citation
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.
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