Effects of MgO on Crystallization and Microwave Dielectric Properties of MgO-Al2O3-SiO2-TiO2-La2O3Glass-Ceramics

doi:10.1111/ijag.12079

	Effects of MgO on Crystallization and Microwave Dielectric Properties of MgO-Al2O3-SiO2-TiO2-La2O3Glass-Ceramics
	Wang, Hui-Juan; Li, Bo-Tao; Lin, Hui-Xing; Chen, Wei; Luo, Lan
刊名	International Journal of Applied Glass Science
	2018
卷号	5 期号:4 页码:436-442
ISSN号	20411286
DOI	10.1111/ijag.12079
英文摘要	A new glass-ceramic material with dielectric constant Εr~9-12 and optimum quality factor Q × f~29000 GHz was fabricated from xMgO-1.2Al2O3-2.8SiO2-1.2TiO2-0.4La2O3(x = 1.0, 1.4, 1.8 and 2.2) system. The effects of MgO on crystallization, microstructure, and dielectric properties of the material were investigated by differential scanning calorimeter(DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and network analyzer. The results show that the glass-ceramic consists of multicrystalline phases, including perrierite, cordierite, magnesium aluminotitanate (MAT), rutile, and spinel (MgAl2O4). Rising MgO content promotes the formation of MAT with compositions richer in magnesia, stabilizes spinel at high temperature, and at the same time suppresses the existence of rutile in the material. Quality factor Q × f value of the material is significantly improved with increasing MgO, which is mainly attributed to the existence of more MAT and spinel, while the drop of dielectric constant is related to the decrease in rutile. © 2014 The American Ceramic Society and Wiley Periodicals, Inc.
出版者	Blackwell Publishing Inc.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25156]
专题	中国科学院上海硅酸盐研究所
通讯作者	Lin, Hui-Xing
作者单位	Key Laboratory of Inorganic Functional Material and Device, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
推荐引用方式 GB/T 7714	Wang, Hui-Juan,Li, Bo-Tao,Lin, Hui-Xing,et al. Effects of MgO on Crystallization and Microwave Dielectric Properties of MgO-Al2O3-SiO2-TiO2-La2O3Glass-Ceramics[J]. International Journal of Applied Glass Science,2018,5(4):436-442.
APA	Wang, Hui-Juan,Li, Bo-Tao,Lin, Hui-Xing,Chen, Wei,&Luo, Lan.(2018).Effects of MgO on Crystallization and Microwave Dielectric Properties of MgO-Al2O3-SiO2-TiO2-La2O3Glass-Ceramics.International Journal of Applied Glass Science,5(4),436-442.
MLA	Wang, Hui-Juan,et al."Effects of MgO on Crystallization and Microwave Dielectric Properties of MgO-Al2O3-SiO2-TiO2-La2O3Glass-Ceramics".International Journal of Applied Glass Science 5.4(2018):436-442.