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无机材料学报

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BaO-CeO2-TiO2微波介质陶瓷的烧结特性及物相组成

周东祥, 余晓华, 王鹤, 赵俊   

  1. 华中科技大学电子科学与技术系, 武汉 430074
  • 收稿日期:2006-10-23 修回日期:2007-01-12 出版日期:2007-11-20 网络出版日期:2007-11-20

Sintering Characters and Phase Composition of BaO-CeO2-TiO2 Microwave Dielectric Ceramics

ZHOU Dong-Xiang, YU Xiao-Hua, WANG He, ZHAO Jun   

  1. Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2006-10-23 Revised:2007-01-12 Published:2007-11-20 Online:2007-11-20

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摘要： 采用TG-DTA、SEM、EDAX、XRD等测试手段研究了BaO-CeO2-TiO2微波介质陶瓷的烧结特性及物相组成. BaO-CeO2-TiO2的预烧温度和烧结温度分别为900～1100℃和1250～1300℃. 结果表明: Ba 6-3x Ce 8+2x Ti 18 O 54(x=0.8)在1300℃下烧结后形成了由A、B两相共存的体系, 其中A、B两相的元素摩尔比分别为Ce:O=1.0:1.3, Ba:Ti:Ce:O=1.00:6.70:0.35:9.46. 此时体系的介电
常数为28.72, 品质因数为最高值4862.13GHz.

关键词: 微波介质陶瓷, BaO-CeO 2-TiO 2, 物相组成

Abstract: The sintering characters and phase composition of BaO-CeO2-TiO2 were examined with TG-DTA, SEM, EDAX and XRD. The pretreating temperature and sintering temperature were 900--1100℃ and 1250--1300℃,respectively. The results indicate that the samples Ba 6-3x Ce 8+2x Ti 18 O54(x=0.8) sintered at 1300℃ consist of A and B phases, whose elements molar ratio are Ce:O=1.0:1.3 and Ba:Ti:Ce: O=1.00:6.70:0.35:9.46 respectively. And the above sintered samples with permittivity of 28.72 have the highest quality factor of 4862.13GHz.

Key words: microwave dielectric ceramics, BaO-CeO 2-TiO2, phase composition

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