Low-temperature firing and microwave dielectric properties of 16CaO–9Li2O–12Sm2O3–63TiO2 ceramics with V2O5 addition

✍ Scribed by Yong-jun Gu; Jin-liang Huang; Qian Li; Dao-ming Sun; Hui Xu

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 777 KB
• Volume: 28
• Category: Article
• ISSN: 0955-2219
• DOI: 10.1016/j.jeurceramsoc.2008.05.023

✦ Synopsis

The sintering behaviors and microwave dielectric properties of the 16CaO-9Li 2 O-12Sm 2 O 3 -63TiO 2 (abbreviated CLST) ceramics with different amounts of V 2 O 5 addition had been investigated in this paper. The sintering temperature of the CLST ceramic had been efficiently decreased by nearly 100 • C. No secondary phase was observed in the CLST ceramics and complete solid solution of the complex perovskite phase was confirmed. The CLST ceramics with small amounts of V 2 O 5 addition could be well sintered at 1200 • C for 3 h without much degradation in the microwave dielectric properties. Especially, the 0.75 wt.% V 2 O 5 -doped ceramics sintered at 1200 • C for 3 h have optimum microwave dielectric properties of Kr = 100.4, Q × f = 5600 GHz, and TCF = 7 ppm/ • C. Obviously, V 2 O 5 could be a suitable sintering aid that improves densification and microwave dielectric properties of the CLST ceramics.