Synthesis and characterization of LTCC compositions with middle permittivity based on CaO-B₂O₃-SiO₂ glass/CaTiO₃ system

详细信息    查看全文

• 作者：Luchao Ren^a ; ^b ; Xianfu Luo^a ; ^b ; Lisong Hu^a ; ^b ; Qinglei Sun^a ; ^b ; Yunsheng Xia^a ; ^b ; Yongkang Hu^a ; ^b ; Wenyuan Gong^a ; ^b ; Hongqing Zhou^a ; ^b ; ^{hqzhou@njtech.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：CaTiO3 ; Glass ceramics ; Dielectric properties ; Tape casting ; LTCC application
• 刊名：Journal of the European Ceramic Society
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：37
• 期：2
• 页码：619-623
• 全文大小：3206 K

文摘

CaTiO₃ ceramics with the addition of CaO-B₂O₃-SiO₂ (CBS) glass (45–55 wt%) composites were sintered at 830 °C, 850 °C, 875 °C and 900 °C. To illustrate influence mechanism of the different glass contents and sintering temperatures on the properties of the composites, we focused on the multiple performances of the composites by employing different qualitative and quantitative instruments. Composites with 50 wt% glass sintered at 875 °C presented fairly ideal performance: the bulk density was 3.20 g/cm³, the dielectric constant was 25.7 and the dielectric loss was 0.0009 at 7 GHz. Micro-Structure analysis of the composites showed a dense and pore-less microstructure except for few pores with size around 1 μm. In addition, the composite could meet the shrinkage requirement of Ag electrodes and could not possibly react with Ag electrodes any more. This makes them suitable for various dielectric applications at low sintering temperature.