烧结温度对(Ba_(0.85)Ca_(0.15))(Ti_(0.9)Hf_(0.1))O_3陶瓷压电性能的影响

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英文篇名：Effect of Sintering Temperature on Piezoelectric Properties of (Ba_(0.85)Ca_(0.15))(Ti_(0.9)Hf_(0.1))O_3 Ceramics 作者：许文君 ; 梁进闯 ; 周恒为 ; 黄以能 ; 陈云飞 ; 尹红梅 英文作者：XU Wen-jun;LIANG Jin-chuang;ZHOU Heng-wei;HUANG Yi-neng;CHEN Yun-fei;YIN Hong-mei;Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matter Physics,College of Physical Science and Technology,Yili Normal University;National Lab of Solid State Microstructures,School of Physics,Nanjing University; 关键词：压电陶瓷 ; 压电性能 ; 固相反应法 ; 烧结温度 英文关键词：piezoelectric ceramics;;piezoelectric property;;solid state reaction method;;sintering temperature 中文刊名：RGJT 英文刊名：Journal of Synthetic Crystals 机构：伊犁师范学院物理科学与技术学院新疆凝聚态相变与微结构实验室;南京大学物理学院国家固体微结构重点实验室; 出版日期：2019-05-15 出版单位：人工晶体学报 年：2019 期：v.48;No.247 基金：自治区研究生科研创新项目(YLSF2017003);; 伊犁师范学院科研项目(2016YSY022);; 新疆维吾尔自治区普通高校重点学科开放课题(XJZDXK-phy201809) 语种：中文; 页：RGJT201905029 页数：6 CN：05 ISSN：11-2637/O7 分类号：198-203

摘要

采用传统固相反应法在系列烧结温度下制备了(Ba_(0.85)Ca_(0.15))(Ti_(0.9)Hf_(0.1))O_3无铅压电陶瓷,并对陶瓷样品的晶格结构、表面形貌、铁电性能、压电性能和常温介电性能进行了测试与分析。结果表明:样品均具有纯的钙钛矿结构,随着烧结温度的升高,样品的晶体结构由立方相转变为四方相;压电系数和机电耦合系数随之增大,当烧结温度为1340℃时,样品的晶粒尺寸较为均匀,约为2～7μm,并且样品压电系数最大为250 pC·N~(-1),此时,2Pr=13. 33μC·cm~(-2),2Ec=5. 91 kV·cm~(-1),i=0. 05 mA,ε=1803,tanδ≈0. 017,K_p=0. 32,Q_m=116。
        Lead-free (Ba_(0.85)Ca_(0.15))(Ti_(0.9)Hf_(0.1))O_3 piezoelectric ceramics were prepared by traditional solid state reaction method at different sintering temperature and the crystal structure,surface morphology,ferroelectric,piezoelectric and room temperature dielectric properties of ceramic samples were tested and analyzed. The results show that all the samples possess a pure perovskite phase structure,the phase structure of the sample change from cubic phase to tetragonal phase and the piezoelectric constant and the electromechanical coupling coefficient increase with increased sintering temperature; The grain size is relatively uniform of the (Ba_(0.85)Ca_(0.15))(Ti_(0.9)Hf_(0.1))O_3 ceramics sintered at 1340 ℃ degree,about 2 ～ 7 μm,and it exhibit optimal piezoelectric properties. d_(33)= 250 pC·N~(-1),2Pr = 13. 33 μC·cm~(-2),2Ec = 5. 91 kV·cm~(-1),i = 0. 05 mA,ε = 1803,tanδ≈0. 017,K_p= 0. 32,Q_m= 116.

引文

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