Low temperature sintering kinetics of BaO-0.15ZnO-4TiO₂ dielectric ceramic in the presence of a liquid phase

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• 作者：Shuxin Duan ; Enzhu Li ; ^{lienzhu@uestc.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Yawei Chen ; Bin Tang ; Ying Yuan ; Shuren Zhang
• 关键词：BaO-0.15ZnO-4TiO2 ; Li2O-B2O3-SiO2 ; LTCC ; Microwave dielectric ceramics
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：197-200
• 全文大小：1508 K

文摘

The influence of Li₂O-B₂O₃-SiO₂ glass (LBS) on the activation energy, phase composition, reaction mechanisms, and microstructure of the BaO-0.15ZnO-4TiO₂ ceramics (Ba-Zn-Ti) were investigated to understand the mechanism of the sintering kinetic. The results reveal that the sintering process of the Ba-Zn-Ti significantly accelerated at a low temperature even with a higher activation energy, due to the reaction of Ba-Zn-Ti and LBS caused by the existence of liquid phase, which provides extra energy at the early stage of sintering, called reactive liquid-phase sintering. The sintering temperature of Ba-Zn-Ti significantly dropped from 1150 °C to 875 °C attribute to the presence of liquid phase caused by LBS, and obtained excellent dielectric microwave properties.