Effects of B2O3 Contents on Crystallization Behaviors and Dielectric Properties of CaO-B2O3-SiO2 Glass Ceramics

Abstract:

Article Preview

The CaO-B2O3-SiO2 glass ceramics system with four different boron contents (14 wt. %, 16.4 wt. %, 18.6 wt. %, 21 wt. %) were prepared under 900oC. The properties and microstructures are characterized by Differential Scanning Calorimeter (DSC), X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The effects of boron contents on the composition of crystalline phases and the properties of CaO-B2O3-SiO2 glass ceramics system were studied. The results show that when the molar ratio of CaO/SiO2 is 1.06, as the content of B2O3 increases, the major crystalline phases experiences the transformation from CaSiO3 to CaB2O4 and the content of α-SiO2 crystalline phase decreases, and the dielectric constant increases firstly but it decreases after the content of B2O3 reaches to 18.6 wt. %, while the dielectric loss tgδ of decreases gradually with the addition of boron content. When the content of B2O3 is 16.4 wt. %, the CaO-B2O3-SiO2 glass ceramics with a bulk density of 2.47 g/cm3 exhibits good dielectric properties (1 MHz): εr=6.03, tgδ=3.49×10-3.

Info:

Periodical:

Edited by:

Yiwang Bao, Danyu Jiang and Jianghong Gong

Pages:

301-305

Citation:

A. Q. Jia et al., "Effects of B2O3 Contents on Crystallization Behaviors and Dielectric Properties of CaO-B2O3-SiO2 Glass Ceramics", Key Engineering Materials, Vol. 680, pp. 301-305, 2016

Online since:

February 2016

Export:

Price:

$38.00

* - Corresponding Author

[1] J. Zhou, Towards rational design of low-temperature co-fired ceramic (LTCC) materials, Journal of Advanced Ceramics. 1(2012) 89-99.

DOI: https://doi.org/10.1007/s40145-012-0011-3

[2] X.Y. Chen, W.J. Zhang, S.X. Bai, Y.G. Du, Densification and characterization of SiO2-B2O3-CaO-MgO glass/Al2O3 composites for LTCC application, Journal of Ceramics International. 39(2013) 6355-6361.

DOI: https://doi.org/10.1016/j.ceramint.2013.01.061

[3] C. -C. Chiang, S. -F. Wang, Y. -R. Wang, W. -C.J. Wei, Densification and microwave dielectric properties of CaO-B2O3-SiO2 system glass-ceramics, Journal of Ceramics International. 34(2008)599-604.

DOI: https://doi.org/10.1016/j.ceramint.2006.12.008

[4] H.K. Zhu, H.Q. Zhou, M. Lu, et al, Microstructure and microwave dielectric characteristics of CaO-B2O3-SiO2 glass ceramics, Journal of Mater Sci: Mater Electron. 20 (2009)1135-1139.

DOI: https://doi.org/10.1007/s10854-008-9839-2

[5] P.F. Wei, H.Q. Zhou, H.K. Zhu, G. Ning, M. Liu, Effect of boron content on properties of CaO-B2O3-SiO2 system glass-ceramics, Journal of ELECTRONIC COMPONENTS AND MATERIALS. 28(2009)34-36.

[6] F. Karlsruhe, International Crystal Structure Data, ICSD, Germany, (2000).

[7] M. He, M.Q. Wu, S.R. Zhang, X.H. Zhou, T. Zhang, Quantitative analysis of crystalline and remaining glass phases in CaO-B2O3-SiO2 ternary system glass ceramics, J Alloys Compd. 506(2010) 252-260.

DOI: https://doi.org/10.1016/j.jallcom.2010.07.061

[8] M. He, S.R. Zhang, J. Wan, Quantitative analysis on content of crystalline phases of Zr doped CBS glass ceramics, Journal of ELECTRONIC COMPONENTS AND MATERIALS. 31(2012)4-7.

[9] C. -R. Chang, J. -H. Jean, Crystallization Kinetics and Mechanism of Low-Dielectric, Low-Temperature, Cofirable CaO–B2O3–SiO2 Glass-Ceramics, Journal of Am. Ceram. Soc. 82(1999)1725-1732.

DOI: https://doi.org/10.1111/j.1151-2916.1999.tb01992.x

Fetching data from Crossref.
This may take some time to load.