ZnO和Na_2O对CaO-B_2O_3-SiO_2介电陶瓷结构与性能的影响  

THE EFFECTS OF ZnO AND Na_2O ON MICROSTRUCTERS AND PROPERTIES OF CaO-B_2O_3-SiO_2 DIELECTRIC CERAMICS

作　　者：孙慧萍[1] 张启龙[1] 杨辉[1] 邹佳丽[1] 尤原 

机构地区：[1]浙江大学材料与科学工程系,杭州310027 [2]浙江正原电气股份有限公司,嘉兴314003

出　　处：《陶瓷学报》2004年第1期60-63,共4页Journal of Ceramics

基　　金：浙江省重大科技攻关项目 (编号 :0 2 110 15 62 )

摘　　要：研究了烧结助剂ZnO和Na2 O对CaO -B2 O3 -SiO2 (CBS)系微波介质陶瓷介电性能、相组成及结构特性的影响。烧结助剂ZnO在烧结过程中与B2 O3 及SiO2 生成低熔点玻璃相 ,有效地降低了材料的致密化温度 ,烧结机理为液相烧结。碱金属氧化物Na2 O虽然能够有效降低材料的烧结温度 ,但会破坏硅灰石晶体结构 ,引起材料微波性能显著降低。通过实验 ,制备出了具有优良微波介电性能的陶瓷材料 。The CaO-B 2O 3-SiO 2(CBS) microwave dielectric ceramics which can be sintered at low temperature use ZnO and Na 2O as additives were investigated.The microwave dielectric properties,sintering process and microstructures of the ceramics were studied too.Low melting point glasses which lower the sintering temperature efficiently can be formed with ZnO,B 2O 3 and SiO 2 at the sintering process.The sintering mechanism is liquid phase sintering.Though Na 2O can also lower the sintering temperature,it destroys the crystal structure of the CaSiO 3 and lead to poor microwave property.The ceramics has a excellent microwave dielectric properties and is suitable for the production of high frequency microwave devices like LTCC and microwave fiters.

关 键 词：微波介质陶瓷 介电性能 烧结助剂 相组成 结构 

分 类 号：TQ174.754[化学工程—陶瓷工业]