CaZrO_3掺杂对BaTiO_3-Nb_2O_5-Co_3O_4系统陶瓷性能的影响  

EFFECTS OF CaZrO_3 ADDITIVE ON THE PROPERTIES OF BaTiO_3-Nb_2O_5-Co_3O_4 CERAMICS SYSTEM

作　　者：陈小龙[1] 蒲永平[1] 赵新[1] 

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2011年第3期22-25,共4页Journal of Shaanxi University of Science & Technology

基　　金：教育部科学技术研究重点项目(209126);陕西省科技攻关项目;陕西科技大学研究生创新基金

摘　　要：采用固相法制备了CaZrO3掺杂的BaTiO3-Nb2O5-Co3O4(BNC)系统陶瓷,研究了CaZrO3掺杂量(3.85mol%、4.75mol%、5.50mol%、6.50mol%、7.40mol%)及烧结温度(1 320℃、1 340℃、1 360℃)对BNC陶瓷致密度及介电性能的影响.结果表明:随着CaZrO3掺杂量的增加,BNC陶瓷密度和直径收缩率逐渐增大,介电常数和损耗则逐渐降低;CaZrO3掺杂量一定时,随着烧结温度的升高,BNC陶瓷系统密度和直径收缩率逐渐升高,介电常数增大,介电损耗随温度的升高逐渐降低.CaZrO3-doped BaTiO3-Nb2O5-Co3O4 （BNC） ceramics were prepared by solid-state reaction technology. The influence of various CaZrO3 additive （3.85 mol%, 4.75 mol%, 5.50 mol%, 6.50 mol%, 7.40 mol%） amount and sintering temperature （1 320 ℃, 1 340 ℃, 1 360 ℃） on density and dielectric properties of BNC ceramics was investigated. The results showed that the density increased with CaZrO3 additive amount, the dielectric constant and tanδ decreased. The sintering temperature was propitious to the the dielectric properties and the density. With the sintering temperature increasing, the dielectric constant and the density of BNC cerramics system increased respectively, and tanδ minished.

关 键 词：锆酸钙掺杂 钛酸钡基 介电性能 

分 类 号：TQ174.754[化学工程—陶瓷工业]