Influence of BaB₂O₄ Glass on the Synthesis of Ba₂Ti₉O₂₀ Ceramics

Abstract:

The effects of BaB₂O₄ glass on the synthesis of Ba₂Ti₉O₂₀ were studied. The doping amounts of BaB₂O₄ varied from 0 to 10wt% and the compositions were sintered in the temperature range of 1200~1280^◦C for 2h. The benefit of BaB₂O₄ addition to the densification of the ceramics is apparently due to the liquid phase which accelerates the migration of reactant species, which results in the decreasing of the sintering temperature. With the amount of BaB₂O₄ increased, the microstructure and properties of the ceramics were also changed: BaTi₄O₉ became the major phase instead of Ba₂Ti₉O₂₀, bulk density decreased, and dielectric constant decreased accordingly, while dielectric loss kept small.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 2257-2260
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.2257
• Online since: October 2011
• Authors: Mi Xiao, Cui Ran Jia, Chao Liu, Ming Yu, Qiang Song
• Keywords: Ba₂Ti₉O₂₀, BaB₂O₄, Dielectric, Glass, Micro-Wave

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