熔盐法制备钛酸锌陶瓷及其介电、铁电性能的研究  

Preparation of zinc titanate ceramics by molten salt method and its dielectric and ferroelectric properties

作　　者：李姿源 毕晨霞 陈娜 赵卫星 姜红波 LI Zi-yuan;BI Chen-xia;CHEN Na;ZHAO Wei-xing;JIANG Hong-bo(School of Chemistry and Chemical Engineering,Baoji University of Arts and Sciences,Baoji721013,China)

机构地区：[1]宝鸡文理学院化学化工学院,陕西宝鸡721013

出　　处：《化学工程师》2024年第11期11-15,5,共6页Chemical Engineer

基　　金：陕西省重点研发计划项目资助(No:2020KW-041);陕西省留学人员科技活动择优资助项目(No:2020013)。

摘　　要：本文采用熔盐法,通过控制变量法,改变原料比、煅烧温度及时间,筛选出制备钛酸锌粉体的最佳反应条件为:原料比(H_(2)TiO_(3)∶ZnO)为1∶1.1,反应温度为900℃,升温速率为3℃·min^(-1),保温时长为3h。产品经X-射线衍射仪(XRD)、扫描电子显微镜(SEM)和拉曼光谱(Raman)的表征和分析,确认为钛酸锌粉体,形状比较光滑,几乎没有覆在表面的杂质。对钛酸锌粉体进行造粒、手动压片和高温烧结得到ZnTiO_(3)陶瓷,对陶瓷进行打磨、被电极处理,进而测试其介电性能和铁电性能。经介电测试分析显示,ZnTiO_(3)陶瓷是一种具有较好介电性能的陶瓷。铁电实验分析表明,ZnTiO_(3)陶瓷具有明显的铁电性,它的剩余极化强度Pr=0.0288μC·cm^(-2),矫顽电场Ec=3.5654k V·cm^(-1)。The molten salt method is used in this paper.The optimal reaction time was selected by changing the ratio of raw materials,calcination temperature and time by controlling variable method.The zinc titanate powders are successfully prepared under these conditions,which the raw material ratio(H_(2)TiO_(3)∶ZnO)is 1∶1.1,the temperature increase rate is 3℃·min^(-1)and the holding time is 3h under the reaction temperature is 900℃.X-ray diffractometer(XRD),scanning electron microscope(SEM)and Raman spectroscopy(Raman)are used to characterise and analyse the product,which is confirmed to be zinc titanate powder with regular shape and smooth surface with few adhesion.The zinc titanate powder is granulated,manually pressed and sintered at high temperature to obtain ZnTiO_(3)ceramics,which are polished and electrodeposited to test their dielectric and ferroelectric properties.The dielectric test analysis shows that the ZnTiO_(3)ceramics have good dielectric properties.The ferroelectric test analysis verifies that the ZnTiO_(3)ceramics has significant ferroelectricity with a remnant polarisation Pr=0.0288μC·cm^(-2)and a coercive electric field Ec=3.5654kV·cm^(-1).

关 键 词：钛酸锌 ZnTiO_(3)陶瓷 熔盐法 高温煅烧 

分 类 号：TQ174.1[化学工程—陶瓷工业]