铅基钙钛矿结构微波介质陶瓷的制备工艺研究  

Study of Preparation Technology of Lead-base Perovskite Microwave Dielectric Ceramics

作　　者：黄静[1] 周东祥[1] 胡明哲[1] 

机构地区：[1]华中科技大学电子科学与技术系教育部敏感信息陶瓷工程中心,湖北武汉430074

出　　处：《仪表技术与传感器》2004年第9期8-10,20,共4页Instrument Technique and Sensor

基　　金：国家高技术研究发展计划资助项目(2001AAZB3201)

摘　　要：采用液相助烧的烧结工艺制备了PbCaFeNb高εr微波介质陶瓷材料,并研究了液相助烧剂对降低烧结温度的影响,同时研究了成型压力、烧结工艺对材料微观组织及微波性能的影响。结果发现:掺杂Bi2O3和MnO2后,即改善了材料的性能又降低了烧结温度,低温烧结时,随成型压力增大,材料密度呈上升趋势,在一定范围内使得材料品质因数Qf提高,选择恰当的煅烧温度和适当提高烧结温度及延长烧结时间和保温时间可以提高材料的Qf.High PbCaFeNb microwave dielectric ceramics was preapared through liquid-sintering technology,investigated the relationship between pelleting pressure,sintering parameter and the microstructure and microwave properties.The results show that co-doping of Bi_2O_3 and MnO_2 can both improve microwave properties and decrease sintering temperature.With the increased of pelleting pressure,the bulk density of ceramics increased as well as the increasing of Q_f value in a certain range when a proper calcining temperature and proper increased sintering temperature and time were chosen,the Q_f value of ceramics was increased.

关 键 词：铅基钙钛矿结构 微波介质陶瓷 制备 液相助烧 成型压力 烧结温度 微观组织 微波性能 

分 类 号：TM25[一般工业技术—材料科学与工程]