Microstructure Modifications and Sintering Mechanism of Ba0.55Sr0.4Ca0.05TiO3 Ceramics Containing Different MgO Additive for LTCC Application

作者：Wang Dahao^*; Li Xiaolei; Jia Qianqian; Zhou Yugui; Ji Huiming; Dai Yejing

来源：International Journal of Applied Ceramic Technology, 2013, 10: E192-E199.

DOI：10.1111/ijac.12111

Ferroelectric Ba0.55Sr0.4Ca0.05TiO3 (BSCT) ceramics with nano-MgO additive have been prepared by typical electrical ceramic technology sintered at 950 degrees C for 2h. The influence of the additive content on the sintering behaviors of BSCT ceramics is investigated. The results show that the interactions of MgO with BSCT and B2O3-Li2O liquid sintering additive help to form wetting boundaries for accelerating densification process, promote the grain growth of BSCT ceramic. The BSCT ceramic with 20 wt% nano-MgO possesses uniform microstructure, high densification, and superior dielectric properties. The modification mechanism of nano-MgO on BSCT ceramic is summarized as MgO assisted wetting sintering model.

• 出版日期2013-9
• 单位天津大学