B2O3-CuO复相掺杂对Ba0.6Sr0.4TiO3陶瓷低温烧结及性能的影响  

EFFECTS Of B_2O3-CuO DOPING ON LOW-TEMPERATURE-SINTERING AND PROPERTIES OF Ba_(0.6)Sr_(0.4)TiO_3 CERAMICS

作　　者：杨兰贺[1] 刘贵山[1] 马铁成[1] 邱金勇[1] 吴凯卓[1] 

机构地区：[1]大连工业大学新材料与材料改性省重点实验室,新能源材料研究所,大连116034

出　　处：《中国陶瓷》2011年第8期16-19,共4页China Ceramics

摘　　要：采用溶胶凝胶法制备了B2O3-CuO复相掺杂Ba0.6Sr0.4TiO3(BST)的陶瓷样品。通过差热分析(DTA)研究了纯Ba0.6Sr0.4TiO3干凝胶煅烧过程中的反应过程;利用X射线衍射仪(XRD)和扫描电子显微镜(SEM)表征了B2O3-CuO复相掺杂Ba0.6Sr0.4TiO3陶瓷的物相组成和微观结构;探讨了掺杂2%6B2O3-4CuO对Ba0.6Sr0.4TiO3陶瓷致密度和烧结温度的影响。最后利用TH2818型自动元件分析仪系统地分析了掺杂不同配比、不同含量B2O3-CuO对Ba0.6Sr0.4TiO3陶瓷材料介电性能的影响,得到了B2O3-CuO复相掺杂影响其性能的规律,即随着B2O3-CuO加入量的增加材料的介电常数和介电损耗开始增大随后减少。Barium strontium titanate（Bao.6Sro.4TiO3,BST） ceramics with low-doped B203-CuO were prepared by sol-gel method. The chemical reaction of pure Bao.6Sr0.4TiO3 dry gel were analyzed by differential thermal analyzer, main phases structure and microstructures of pure Ba0.6Sro.4TiO3 ceramics were characterized by X-ray diffraction and SEM. Effects of 2%6B2O3-4CuO on density and sintering temperature of Bao.6Sr0.4TiO3 were investigated. Effects of different content B2O3-CuO on dielectric properties of BST ceramics were investigated by TH2818 automatic component analyzer. The result showed that with the increasing of B2O3-CuO additive the dielectric constant and dielectric loss start increasing and then decreasing.

关 键 词：Ba0.6Sr0.4TiO3 B2O3-CuO 溶胶凝胶法 介电损耗 

分 类 号：TQ174.75[化学工程—陶瓷工业]