BNT掺杂对0.95BaTiO_3-yNb_2O_5-(0.05y)Co_2O_3材料的影响  

Effect of BNT doping on property of 0.95BaTiO_3-yNb_2O_5-(0.05 y)Co_2O_3

作　　者：黄祥贤 谢显斌 宋运雄 张子山 吴金剑 

机构地区：[1]福建火炬电子科技股份有限公司,福建泉州362000

出　　处：《电子元件与材料》2013年第2期5-8,共4页Electronic Components And Materials

基　　金：总装高可靠陶瓷电容器用陶瓷材料技术牵引项目资助

摘　　要：采用固相合成工艺制备了Bi0.5Na0.5TiO3(BNT),研究了BNT掺杂对符合X7R特性的0.95BaTiO3-yNb2O5-(0.05 y)Co2O3(BTNC)材料介电性能的影响。结果表明,掺入质量分数0.5%～2.0%的BNT的BTNC在–55～+150℃的容温变化率在±15%以内,且在室温和1 kHz下,其εr为2 615,tanδ为1.41×10–2,符合X8R特性。Bi0.sNao.sTiO3（BNT） was prepared by solid phase synthesis method. The effects of BNT doping on dielectric properties of O.95BaTiO3-yNb2O5（0.05-y）Co2O3（BTNC） with specification X7R were investigated. Obtained results show that the BTNC ceramics doped with BNT of mass fraction of 0.5%-2.0% possess the properties of △C/C25℃≤±l 5% at-55-q-150 ℃, εr=2 615 and tanO= 1.41 × 10-2 （under the condition of 1 kHz and room temperature ）. This BNTC ceramic has X8R dielectric characteristic.

关 键 词：MLCC 钛酸钡 钛酸铋钠 X8R 

分 类 号：TM28[一般工业技术—材料科学与工程]