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Investigation on low-temperature reactive viscous flow sintering behavior of lanthanum-borate glass-ceramic with BaTi4O9 ceramic filler
Lu, XZ; Lin, HX
2020-09-01
Source PublicationJOURNAL OF THE EUROPEAN CERAMIC SOCIETY
ISSN0955-2219
Issue12Pages:4035
SubtypeArticle
AbstractIn this paper, the sintering behavior of the lanthanum-borate (B2O3-La2O3-MgO-TiO2,BLMT) glass-ceramic with BaTi4O9 filler composite was investigated in terms of the wetting behavior, interfacial reaction, sinter-shrinkage process, sintering activation energy, as well as phase and microstructure evolution with change in filler contents and sintering temperature. Our research suggested that the glass is unable to wet the filler material within a temperature up to 1000 degrees C, indicating that the densification process of composites is dominated by viscous flow of glass matrix. The increase in filler content that performs as a rigid particle in composite causes the rise in the sinter-shrinkage-onset and -end temperature, thereby proving that the viscous-flow densification of the composites with x <= 30 wt% filler content is accomplished before the crystallization of BLMT glass, whereas the composites with x >= 40 wt% cannot. After densification, a chemical reaction that almost synchronizes with the glass crystallization occurred between glass and ceramic, which not only imposes significant influence on the crystallization behavior, but eradicates the closed pore formed by the viscous flow and the induced crystallization porosity. The densification process of the BaTi4O9 filler-BLMT glass composite was referred to as two-stage reactive assisted viscous flow sintering process which consists of viscous flow of glass, of the crystallization process of glass, and/or of the chemical reaction between glass and filler.
DOI10.1016/j.jeurceramsoc.2020.05.025
WOS KeywordMICROWAVE DIELECTRIC-PROPERTIES ; PHASE EVOLUTION ; CRYSTALLIZATION ; DENSIFICATION ; KINETICS ; VISCOSITY ; POWDERS
Language英语
WOS Research AreaMaterials Science
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27794
Collection中国科学院上海硅酸盐研究所
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Lu, XZ,Lin, HX. Investigation on low-temperature reactive viscous flow sintering behavior of lanthanum-borate glass-ceramic with BaTi4O9 ceramic filler[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2020(12):4035.
APA Lu, XZ,&Lin, HX.(2020).Investigation on low-temperature reactive viscous flow sintering behavior of lanthanum-borate glass-ceramic with BaTi4O9 ceramic filler.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY(12),4035.
MLA Lu, XZ,et al."Investigation on low-temperature reactive viscous flow sintering behavior of lanthanum-borate glass-ceramic with BaTi4O9 ceramic filler".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY .12(2020):4035.
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