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Effect of Bi2O3 Addition on the Sintering Temperature and Microwave Dielectric Properties of Zn2SiO4 Ceramics
- Authors
- Kim, Jin-Seong; Nguyen, Ngoc-Huan; Song, Myung-Eun; Lim, Jong-Bong; Paik, Dong-Soo; Nahm, Sahn; Paik, Jong-Hoo; Choi, Byung-Hyun; Yu, Soon-Jae
- Issue Date
- 2009
- Publisher
- WILEY
- Citation
- INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, v.6, no.5, pp.581 - 586
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
- Volume
- 6
- Number
- 5
- Start Page
- 581
- End Page
- 586
- ISSN
- 1546-542X
- Abstract
- Bi2O3 was added to a nominal composition of Zn1.8SiO3.8 (ZS) ceramics to decrease their sintering temperature. When the Bi2O3 content was < 8.0 mol%, a porous microstructure with Bi-4(SiO4)(3) and SiO2 second phases was developed in the specimen sintered at 885 degrees C. However, when the Bi2O3 content exceeded 8.0 mol%, a liquid phase, which formed during sintering at temperatures below 900 degrees C, assisted the densification of the ZS ceramics. Good microwave dielectric properties of Q x f=12,600 GHz, epsilon(r)=7.6, and tau(f)=-22 ppm/degrees C were obtained from the specimen with 8.0 mol% Bi2O3 sintered at 885 degrees C for 2 h.
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