Journal of Central South University

, Volume 18, Issue 5, pp 1359–1364 | Cite as

Microstructure and microwave dielectric properties of CaO-B2O3-SiO2 glass ceramics with various B2O3 contents

  • Peng-fei Wei (韦鹏飞)
  • Hong-qing Zhou (周洪庆)Email author
  • Hai-kui Zhu (朱海奎)
  • Bin Dai (戴斌)
  • Jie Wang (王杰)


The effects of B2O3 addition on both the sintering behavior and microwave dielectric properties of CaO-B2O3-SiO2 (CBS) glass ceramics were investigated by Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The results show that the increasing amount of B2O3 causes the increase of the contents of [BO3], [BO4] and [SiO4], which deduces the increase of CaB2O4 and α-SiO2 and the decrease of CaSiO3 correspondingly. No new phase is observed throughout the entire experiments. A bulk density of 2.54 g/cm3, a thermal expansion coefficient value of 11.95×10−6°C−1 (20–500°C), a dielectric constant ɛr value of 6.42 and a dielectric loss tanδ value of 0.000 9 (measured at 9.7 GHz) are obtained for CBS glass ceramics containing 35% B2O3 (mass fraction) sintered at 850 °C for 15 min.

Key words

CaO-B2O3-SiO2 B2O3 content Fourier transform infrared spectroscopy microstructure dielectric properties 


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Copyright information

© Central South University Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Peng-fei Wei (韦鹏飞)
    • 1
    • 2
  • Hong-qing Zhou (周洪庆)
    • 1
    Email author
  • Hai-kui Zhu (朱海奎)
    • 1
  • Bin Dai (戴斌)
    • 1
  • Jie Wang (王杰)
    • 1
  1. 1.College of Materials Science and EngineeringNanjing University of TechnologyNanjingChina
  2. 2.College of Materials EngineeringJinling Institute of TechnologyNanjingChina

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