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Journal of Inorganic Materials

Journal of Inorganic Materials >

2007 , Vol. 22 >Issue 1: 35 - 39

DOI: https://doi.org/10.3724/SP.J.1077.2007.00035

Research Paper

Phase Transition and Dielectric Properties of MgO-Al2O3-SiO2-TiO2
Glass-ceramics Adding CeO2

  • DONG Ji-Peng ,
  • HE Fei ,
  • LUO Lan ,
  • CHEN Wei
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  • Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

Received date: 2006-02-17

  Revised date: 2006-03-31

  Online published: 2007-01-20

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Abstract

The glass-forming, the crystallization process and microwave dielectric properties of MgO-Al2O3-SiO2-TiO2 system glasses adding CeO2 were investigated by means of DTA, XRD, SEM. Results show that spontaneous
crystallization of the MgO-Al2O3-SiO2-TiO2 system glasses is obviously prevented with the increass of CeO2 content. After heat treatment (nucleation at 770℃ for 4h and cryatal growth at 1200℃ for 1.5h) the crystallized volume fraction of rutile and cordierite decrease and that of perrierite increases. The glass-ceramics obtained by crystallization of the glasses have dielectric constant of 7.5--10.5, and microwave loss less than 5.5×10-4.

Key words： glass-ceramics; microwave materials; MgO-Al2O3-SiO2-TiO2-CeO2 system glass

Cite this article

DONG Ji-Peng , HE Fei , LUO Lan , CHEN Wei . Phase Transition and Dielectric Properties of MgO-Al2O3-SiO2-TiO2
Glass-ceramics Adding CeO2[J]. Journal of Inorganic Materials, 2007 , 22(1) : 35 -39 . DOI: 10.3724/SP.J.1077.2007.00035

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