SrTiO_3掺杂铌酸钾钠粉体的Sol-gel法制备与性能研究

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英文篇名：Study on the preparation and SrTiO_3 doping of KNN system lead-free piezoelectric ceramics with Sol-gel method 作者：郑方圆 ; 杨秀英 ; 冯连振 ; 吴晓芹 ; 张德庆 英文作者：ZHENG Fang-yuan1,YANG Xiu-ying2,FENG Lian-zhen1,WU Xiao-qin2,ZHANG De-qing2(1.College of Chemistry and Chemical Engineering,Qiqihar University,Heilongjiang Qiqihar 161006,China;2.College of Materials Science and Engineering,Qiqihar University,Heilongjiang Qiqihar 161006,China) 关键词：溶胶—凝胶 ; 铌酸钾钠 ; SrTiO3掺杂 英文关键词：sol-gel method;KNN;SrTiO3 doping 中文刊名：QQHE 英文刊名：Journal of Qiqihar University(Natural Science Edition) 机构：齐齐哈尔大学化学与化学工程学院;齐齐哈尔大学材料科学与工程学院; 出版日期：2013-03-15 出版单位：齐齐哈尔大学学报(自然科学版) 年：2013 期：v.29 基金：黑龙江省自然科学基金(E201101);; 黑龙江省教育厅科研项目(12521592) 语种：中文; 页：QQHE201302013 页数：3 CN：02 ISSN：23-1419/N 分类号：40-42

摘要

采用溶胶—凝胶技术,以草酸铌为原料、乙二醇为酯化剂来制备钛酸锶(SrTiO3)掺杂铌酸钾钠(Na0.5K0.5)NbO3无铅压电陶瓷粉体。应用TG/DSC技术对干凝胶的成分及溶胶形成过程中的机理进行了研究,使用XRD和SEM对掺杂SrTiO3的纳米粉体进行了物相结构和表面形貌的表征,并研究了SrTiO3的最佳掺杂比例和烧结温度及其对压电性能的影响。
        In this research we adopted a sol-gel method,with niobium oxalate as niobate resource,glycol as esterifying agent to obtain SrTiO3-KNN lead-free piezoelectric ceramics powder.TG/DSC was adopted to study the compositions of the xerogel and all the synthesis process,in order to find out the mechanizations of the sol-gel process.The crystal structure and surface feature was characterized and observed by XRD and SEM,the SrTiO3 best doping ratio and effect of sintering temperature on electrical properties were studied.

引文

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