摘要
采用传统固相烧结工艺制备(1-x)Ba(Ti_(0.98)Zr_(0.02))-xBa(Ti_(0.96)Sn_(0.04))(BTZ2-xBTS4)和(1-x)Ba(Ti_(0.93)Zr_(0.07))-xBa(Ti_(0.96)Sn_(0.04))(BTZ7-xBTS4)(0≤x≤1)无铅压电陶瓷,研究BTS4摩尔分数对BTZ陶瓷相结构、微观形貌和电学性能的影响。结果表明:所有BTZ2-xBTS4(0≤x≤1.0)样品在室温为O-T两相共存结构;BTZ7-xBTS4样品在0≤x≤0.2时为R-T两相共存结构,在0.2<x≤1.0时为O-T两相共存结构。Zr4+维持BaTiO_3陶瓷的TC以及提升TO-T和T_(O-R)的能力均比Sn^(4+)更强。BTZ-BTS陶瓷相转变温度随成分变化立体图的建立,为根据简单终端成分的相转变特性来判断复杂成分陶瓷体系的相转变温度以及相结构提供指导。
Abstract： The （1-x）Ba（Ti0.98Zr0.02）-xBa（Ti0.96Sn0.04） （BTZ2-xBTS4, 0 ≤x ≤1 ） and （1- x）Ba（Ti0.93Zr0.07）-xBa（Ti0.96Sn0.04）（BTZ7-.xBTS4, 0≤x≤1） lead-free piezoceramics were prepared by conventional solid-state reaction. The effects of BTS4 on the phase structure, morphology and electrical properties of BTZ ceramics were investigated. The results show that the BTZ2-.xBTS4 ceramics are 0-T two phases coexisting structure at room temperature. The BTZ7-.xBTS4 ceramics are R-T two-phase coexisting structure when 0≤x≤0 2 and 0-T two-phase coexisting structure when 0. 2≤x≤1. 0. tt can be concluded that Zr4＋ ions has the stronger ability both on stabilizing Tc and increasing TO-t and TO-r than Sn4＋ ions. The establishment of BTZ-BTS ceramic phase transition temperature diagram with composition variation provides guidance for forecasting the phase transition temperature and phase structure of the complex composition ceramic according to the phase transition characteristics nents.
作者
汪宁
张波萍
陈建银
WANGNing;ZHANGBoping;CHEN Jianyin(The Beijing Municipal Key Laboratory of Nezv Energy Materials and Technology, University o f Science and Technology Beijing , Bejing 100083, China;School of Materials Science and Engineering,University of Science and Technology Bei j ing , Bejing 100083, China)
出处
《中国科技论文》
北大核心
2017年第22期2621-2626,共6页
China Sciencepaper
基金
国家自然科学基金资助项目(51472026)
高等学校博士学科点专项科研基金资助项目(20130006110006)
关键词
压电陶瓷
钛酸钡
相结构
相图
电学性能
piezoceramics
barium dtanate
phase structure
phase diagram
electrical properties
