Reaction Sintering Process for Improving the Microwave Dieffectric Properties of Ba2Ti9O20 Materials
The effect of processing parameters on the characteristics of the reaction-sintered Ba2Ti9O20 materials was investigated. The characteristics of the A-series samples, which were prepared from 2BaTiO3+7TiO2 mixture, vary markedly with the pre-reacting process, whereas those of the B-series samples, which were prepared from BaTi4O9+BaTi5O11 mixture, are in sensitive to this process. The possible explanation is that the B-series mixture forms the Ba2Ti9O20 Hollandite-like phase in one step, which is much simpler than the direct sintering of A-series mixture. The best microwave dieffectric properties obtained are K=38.2 and Q×f=36，000 for B-series Ba2Ti9O20 materials, which were pre-reacted at 1000℃ for 6 h and sintered at 1410℃ for 4 h by one-step densification processes.
Ya-Ju Chu I-Nan Lin
Department of Physics, Tamkang University, Tamsui 251, Taiwan, China
国际会议
Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)
北京
英文
733-737
2007-03-26（万方平台首次上网日期，不代表论文的发表时间）