BaO-CeO_2-TiO_2微波介质陶瓷的烧结特性及物相组成  

Sintering Characters and Phase Composition of BaO-CeO_2-TiO_2 Microwave Dielectric Ceramics

作　　者：周东祥[1] 余晓华[1] 王鹤[1] 赵俊[1] 

机构地区：[1]华中科技大学电子科学与技术系,武汉430074

出　　处：《无机材料学报》2007年第6期1197-1200,共4页Journal of Inorganic Materials

基　　金：国家863计划(2001AA-ZB3201);教育部科学技术研究重大项目(重大0206)

摘　　要：采用TG-DTA、SEM、EDAX、XRD等测试手段研究了BaO-CeO_2-TiO_2微波介质陶瓷的烧结特性及物相组成.BaO-CeO_2-TiO_2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.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 Ba6-3xCes＋2xTi18Osa（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.

关 键 词：微波介质陶瓷 BaO—CeO2-TiO2 物相组成 

分 类 号：TQ174[化学工程—陶瓷工业]