Effect of Cerium Oxide on Sinterability, Microstructure and Properties of Anorthite-Based Glass/Ceramic Composites

The properties of anorthite-based glass/ceramic with different amounts of CeO2 addition had been investigated in this paper. The glass/ceramics with small amounts of CeO2 addition could be well sintered at 850~900°C. The water absorption was examined to evaluate the sintering behavior of the samples...

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Bibliographic Details
Published in:Key engineering materials 2013-03, Vol.544, p.52-55
Main Authors: Bao, Qi Fu, Dong, Wei Xia, Huang, Yan Chun, Gu, Xing Yong
Format: Article
Language:English
Subjects:
Analyzers
Ceramics
Dielectric properties
Glass
Modulus of rupture in bending
Scanning electron microscopy
Sintering
Thermal expansion
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Summary:The properties of anorthite-based glass/ceramic with different amounts of CeO2 addition had been investigated in this paper. The glass/ceramics with small amounts of CeO2 addition could be well sintered at 850~900°C. The water absorption was examined to evaluate the sintering behavior of the samples. The crystalline phase,microstructure, dielectric properties, thermal expansion and bending strength were characterized by X-Ray diffraction (XRD), scanning transmission electron microscope (SEM), impedance materials analyzer, thermal expansion analyzer and flexural strength analyzer. The results showed the 1wt % CeO2-doped glass/ceramics sintered at 900 °C have optimum properties of ε = 6.282, tanθ = 2.18×10-3 at 1 MHz and a thermal expansion coefficient of 3.32×10-6 °C-1 (25~500 oC) matched with silicon chip (3.4×10-6 °C -1). Obviously, CeO2 could be used as a suitable sintering aid that improves densification of the glass/ceramic composites.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.544.52