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Abstract
A series of glass-ceramic composites based on CaF 2 -AlF 3 -SiO 2 oxyfluoride glass and Al 2 O 3 ceramic were prepared. The effects of Al 2 O 3 content on sintering behaviors, phase composition, microstructure and dielectric properties were investigated. The results show that the composites had low sintering temperature (∼ 800 °C), low dielectric constant (5.5-6.6), low dielectric loss (< 0.002), low thermal expansion coefficient (4.9–5.7 ppm/°C), and enough flexural strength (120–250 MPa). The results above indicated that this series of oxyfluoride glass-ceramics were a promising candidate for low temperature co-fired ceramic substrate application.
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Acknowledgments
This work was supported by National Science Foundation of China under grants of 50425204, 50572043, 10774087 and 50621201 and Ministry of Education of China through Seeding Foundation of Major Projects.
