La_(0.5)Na_(0.5)WO_4-La_(0.5)Na_(0.5)TiO_3复相陶瓷低温烧结与微波介电性能研究  

Low-temperature Sintering and Microwave Dielectric Properties ofLa_(0.5)Na_(0.5)WO_4-La_(0.5)Na_(0.5)TiO_3 Composites

作　　者：范跃农 王振[2] 陶磊 卞建江[2] FAN Yuenong;WANG Zhen;TAO Lei;BIAN Jianjiang(School of Mechanical and Electronic Engineering,Jingdezhen Ceramic Institute,Jingdezhen 333403,Jiangxi,China;Department of Inorganic Materials,Shanghai University,Shanghai 200444,China)

机构地区：[1]景德镇陶瓷大学机械电子工程学院,江西景德镇333403 [2]上海大学材料学院,上海200444

出　　处：《陶瓷学报》2018年第6期765-768,共4页Journal of Ceramics

摘　　要：研究了(1-x)La_(0.5)Na_(0.5)WO_4-xLa_(0.5)Na_(0.5)TiO_3复合陶瓷的烧结及微波介电性能。该复合陶瓷可在900-1050℃下烧结,介电常数随x增大有明显提高,品质因素稍有降低,谐振频率温度系数由负向正变化。950℃烧结的x=0.2的样品的微波介电性能:τ_f≈-3.5 ppm/℃,Q×f≈10000 GHz左右,ε_r≈15左右。x=0.2组分与Cu及Ag的共烧实验表明主相与Cu、Ag之间不反应。(1-x)La0.5Na0.5WO4-xLa0.5Na0.5TiO3 composite ceramiccould be successfully densified after sintering at 900-1050℃.The dielectric permittivity increased obviously,Q×f value decreased,and theτf value changed from negative into positive with increasing La0.5Na0.5TiO3phase content.The x=0.2 composition sintered at 950℃exhibited the following microwave dielectric properties:τf^-3.5 ppm/℃,Q×f^about 10000 GHz,εr-about 15.The chemical compatibility of the x=0.2 composition with copper and silver powders was also investigated,and it revealed that no chemical reaction was taken place.

关 键 词：低温共烧 复相陶瓷 微波介电性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]