(1-x)BaTiO_3-xBi_(0.5)Na_(0.5)TiO_3金属陶瓷介电性能的研究  

Study on Dielectric Properties of (1-x)BaTiO_3-xBi_(0.5)Na_(0.5)TiO_3 Matel Ceramic

作　　者：王明琼[1] 许云华[1] 王娟[1] 彭建宏[1] 张小曼[1] 

机构地区：[1]西安建筑科技大学耐磨材料研究所,陕西西安710055

出　　处：《热加工工艺》2008年第14期35-38,共4页Hot Working Technology

摘　　要：采用传统电子陶瓷工艺制备了(1-x)BaTiO3-xBi0.5Na0.5TiO3(x=0.05,0.10,0.20,0.30)陶瓷体系,研究了体系的介电弛豫行为。X衍射分析表明:Bi0.5Na0.5TiO3能够完全溶入BaTiO3晶格;与纯BaTiO3陶瓷相比,(1-x)BaTiO3-xBi0.5Na0.5TiO3体系表现出弥散相变铁电体性质。Bi0.5Na0.5TiO3的引入,降低了介电损耗,宽化了介电峰,提高了居里温度,改善了温度稳定性。The dielectric relaxor behavior of （1-x）BaTiO3-xBi0.5Na0.5TiO3 （x =0.05,0.10,0.20,0.30） ceramic prepared by the conventional electric ceramic preparation technique was investigated. The X-ray diffraction patterns show that Bi0.5Na0.5TiO3 can be fully incorporated into the crystal lattice of BaTiO3. Compared with pure BaTiO3 ceramic, （1-x）BaTiO3-xBi0.5Na0.5TiO3 ceramic samples show ferroelectrics with diffuse phase transition. The dissipation factor decreases, the dielectric peaks broadens, the curie temperature increases and the temperature stability improves because of introducing Bi0.5Na0.5TiO3 solution.

关 键 词：弛豫铁电体 介电性能 陶瓷 

分 类 号：TG148[一般工业技术—材料科学与工程]