MnCO_3掺杂对BaTiO_3-Nb_2O_5-Co_3O_4陶瓷性能的影响  

Effects of MnCO_3 additive on the properties of BaTiO_3-Nb_2O_5-Co_3O_4 ceramics

作　　者：赵新[1,2] 蒲永平[1,2] 陈小龙 

机构地区：[1]浙江温州轻工研究院,浙江温州325000 [2]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《电子元件与材料》2011年第10期1-4,共4页Electronic Components And Materials

基　　金：教育部科学技术研究重点项目(No.209126);浙江温州科技局科技计划资助项(No.H20100081);陕西科技大学学科带头人培养计划资助项目

摘　　要：为了提高BaTiO3-Nb2O5-Co3O(4BNC)陶瓷的介电常数,采用传统固相反应法制备了MnCO3掺杂的BNC陶瓷,研究了MnCO3掺杂量以及烧结温度对BNC陶瓷致密度及介电性能的影响。结果表明:MnCO3的掺杂提高了BNC陶瓷的介电常数,降低了介质损耗。当MnCO3掺杂量为摩尔分数0.5%时,BNC陶瓷相对介电常数达到最大值12 008,介质损耗为0.032 8;随着烧结温度的升高,所制BNC陶瓷的致密度先增加后降低,其介电常数逐渐降低,介质损耗则先降减小增大。In order to increase the permittivity of BaTiO3-Nb2O5-Co3O4（BNC） ceramics,MnCO3-doped BNC ceramics were prepared by solid-state reaction technology.Influences of various MnCO3 additive amount and sintering temperature on the densities and dielectric properties of prepared BNC ceramics were investigated.The results show that MnCO3 addition increase the permittivity and decrease dielectric loss of BNC ceramics.When the mole fraction of MnCO3 is 0.5%,the relative permittivity and dielectric loss are 12 008 and 0.032 8,respectively.The densities of prepared BNC ceramics increase first and then decrease,while the permittivity decrease gradually and the dielectric loss decrease first and then increase with the sintering temperature increasing.

关 键 词：钛酸钡 碳酸锰掺杂 介电性能 

分 类 号：TM28[一般工业技术—材料科学与工程]