Sb掺杂对0.95MgTiO_3-0.05CaTiO_3陶瓷介电性能的影响  

Influence of Sb Doping on Dielectric Properties of Ceramics 0.95MgTiO_3-0.05CaTiO_3

作　　者：王岩[1] 丁士华[1] 宋天秀[1] 那文菊[1] 王久石[1] 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039

出　　处：《西华大学学报（自然科学版）》2011年第4期35-38,共4页Journal of Xihua University:Natural Science Edition

基　　金：国家自然科学基金资助项目(11074203);西华大学人才基金资助项目(R0620109);材料学重点学科资助项目(XZD0814-09-1)

摘　　要：采用固相反应法制备了(Mg0.95-X Ca0.05 SbX)TiO3微波介质陶瓷。研究了Sb掺杂对0.95MgTiO3-0.05CaTiO3(95MCT)陶瓷性能的影响。结果表明:Sb掺杂95MCT陶瓷的主晶相为MgTiO3和CaTiO3两相,有中间相MgTi2O5的产生;Sb掺杂能有效的降低95MCT陶瓷的烧结温度至1 250℃,同时使其致密度增大,改善了介电性能,并能够调节得到零介电常数温度系数。在Sb3+掺杂量为0.04 mol,烧结温度为1 250℃时获得最佳性能:εr=20.50,tgδ=2.33×10-4,αc=2.38×10-5。Ceramics（Mg0.95-XCa0.05SbX）TiO3 was prepared by conventional solid-state route.The influence of Sb doping on the properties of 95MCT was investigated.The results show that MgTiO3 and CaTiO3 are the main phases of ceramics 95MCT with Sb doped,the middle phase MgTi2O5 can be observed,too.Sb additive can lower the sintering temperature of ceramics 95MCT to 1250℃ and higher its density,improve the dielectric properties,and adjust to gain the zero temperature coefficient of dielectric constant.The ceramics 95MCT with 0.04 sb doped possess excellent dielectric properties,i.e.,a dielectric constant εr of 20.50,a dielectric loss tgδ of 2.33×10-4 and a αc value of 2.38×10-5.

关 键 词：0.95MgTiO3-0.05CaTiO3陶瓷 Sb掺杂 介电性能 

分 类 号：TM22[一般工业技术—材料科学与工程]