Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5437899 | Ceramics International | 2017 | 24 Pages |
Abstract
In the present work, the synergistic effect of Li2O-B2O3-SiO2 glass (LBS) and La2O3-B2O3 (LaB) addition on the wetting behavior, activation energy, phase composition, microstructure and microwave dielectric properties of the BaO-0.15ZnO-4TiO2 ceramic (Ba-Zn-Ti) has been investigated to understand the low temperature mechanism of the sintering kinetic. The results show that co-doping with LBS and LaB decreases the activation energy and therefore accelerates the sintering process of the Ba-Zn-Ti due to the liquid phase formed at a low sintering temperature. Moreover, the co-doping of LBS and LaB restrains the appearance of BaTi(BO3)2 caused by the reaction of Ba-Zn-Ti and LBS, which has a deleterious effect on the densification and microwave dielectric properties of Ba-Zn-Ti. With LBS and LaB co-doped, the sintering temperature of Ba-Zn-Ti significantly dropped from 1150 °C to 850-900 °C and remained excellent microwave dielectric properties.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Shuxin Duan, Enzhu Li, Hongyu Yang, Bin Tang, Ying Yuan, Hongcai He, Shuren Zhang,