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- Title
Effect of sintering temperature and time on microwave dielectric properties of CaNbO ceramics.
- Authors
Chen, Yih-Chien; Weng, Min-Zhe; Chang, Kuang-Chiung
- Abstract
The microwave dielectric properties of CaNbO ceramics were investigated with a view to their application in mobile communication. The CaNbO ceramics were prepared by the conventional solid-state method with various sintering temperatures and sintering times. A maximum density of 4.67 g/cm was obtained for CaNbO ceramic, sintered at 1,400 °C for 4 h. Dielectric constants ( ε) of 13.3-18.1 and quality factor ( Q × f) of 12,200-50,000 GHz were obtained at sintering temperatures in the range 1,300-1,500 °C for 4 h. Dielectric constants ( ε) of 18.0-18.1 and quality factor ( Q × f) of 44,300-50,000 GHz were obtained for sintering times in the range 2-6 h at a sintering temperature of 1,400 °C. A dielectric constant ( ε) of 18.1, a quality factor ( Q × f) of 50,000 GHz, and a temperature coefficient of resonant frequency ( τ) of −54 ppm/°C were obtained when CaNbO ceramics were sintered at 1,400 °C for 4 h.
- Subjects
MICROWAVE sintering; EFFECT of temperature on metals; DIELECTRIC properties; PERMITTIVITY; ELECTRONIC ceramics; POWDER metallurgy; ELECTRICAL engineering
- Publication
Journal of Materials Science: Materials in Electronics, 2014, Vol 25, Issue 2, p844
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-013-1655-7