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Effect of CuO additives on sintering and dielectric behaviors of CeO2 ceramics

✍ Scribed by Wen-Shiush Chen; Ching-Fang Tseng; Yi-Mu Lee; Hsin-Han Tung; Hong-Tzer Yang; Cheng-Hsing Hsu

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
537 KB
Volume
209
Category
Article
ISSN
0924-0136

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✦ Synopsis

The effects of CuO addition (1 and 2 wt%) on microstructures and microwave dielectric properties of CeO 2 ceramics with CuO additions have been investigated. It is found that CeO 2 ceramics can be sintered at 1490 β€’ C due to the liquid phase effect of CuO addition. At 1580 β€’ C, CeO 2 ceramics with 1 wt% CuO addition possesses a dielectric constant (Ξ΅ r ) of 21.7, a Q Γ— f value of 50,000 (at 9GHz) and a temperature coefficient of resonant frequency ( f ) of -59 ppm/ β€’ C. A large sintering temperature reduction (about 200 β€’ C) can be achieved by adding CuO to the CeO 2 ceramics. The CuO-added CeO 2 ceramics can find applications in microwave devices.

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