Ba_((1-x))Nd_(x)Ti_((1-y))Mg_(y)O_(3)陶瓷及其介电性能研究  

Investigation on Dielectric Properties of Ba_((1-x))Nd_xTi_((1-y))Mg_yO_(3) Ceramics

作　　者：张莹莹 杨殿来 许丽岩 刘博 杨国庆 段同飞 刘坤 孙连来 李磊 ZHANG Ying-ying;YANG Dian-lai;XU Li-yan;LIU Bo;YANG Guo-qing;DUAN Tong-fei;LIU Kun;SUN Lian-lai;LI Lei(Liaoning Research Institute of Light Industry,Shenyang 110036,Liaoning,China;CITIC Titanium Industry Co.,Ltd.,Jinzhou 121000,Liaoning,China)

机构地区：[1]辽宁省轻工科学研究院有限公司,辽宁沈阳110036 [2]中信钛业股份有限公司,辽宁锦州121000

出　　处：《合成材料老化与应用》2023年第6期61-63,共3页Synthetic Materials Aging and Application

摘　　要：实验采用高能球磨-固相合成法,将Nd^(3+)/Mg^(2+)掺杂到反应物体系中,制备了具有钙钛矿结构的Ba_((1-x))Nd_(x)Ti_((1-y))Mg_(y)O_(3)(取x=0.005,y分别取0.005、0.01、0.015)陶瓷粉体。XRD晶相分析表明,所制备的粉体主晶相为四方相钙钛矿型晶体结构;SEM形貌分析表明,Nd^(3+)/Mg^(2+)共掺具有显著细化晶粒的作用,能够提高其耐压性能,并有效改善陶瓷的介电性能。电学性能分析结果表明,随着Mg^(2+)引入比例的提高,其介电常数(ε_(r))呈现先增大后减小的趋势,介电损耗(tanδ)呈现先减小后逐渐增大的趋势,绝缘电阻(R)和直流击穿强度呈一直增大趋势。当Nd^(3+)/Mg^(2+)摩尔比为1:2时,综合介电性能最佳。Ba_((1-x))Nd_xTi_((1-y))Mg_yO_(3) powders were prepared by high-energy ball milling-solid phase synthesis method with Nd^(3+)/Mg^(2+)being doped into the reaction system,where x=0.005,y=0.005,0.01,0.015,respectively.XRD indicates that the main crystal phase of the powder was tetragonal perovskite crystal structure.The results of SEM show that Nd^(3+)/Mg^(2+)co-doping can significantly refine grains and improve the withstand voltage of the ceramics,the dielectric properties of ceramics have also been effectively improved.Dielectric constant (ε_r) showed a firstly increasing and subsequent decrescent trend,dielectric loss (tanδ) showed a trend of firstly decreasing then gradually increasing,while the insulation resistance (R) and DC breakdown strength increased all the time with the increasing of Mg^(2+)doping content.When Nd^(3+)/Mg^(2+)was 1:2,Ba_((1-x))Nd_xTi_((1-y))Mg_yO_(3) ceramics showed the best dielectric performance.

关 键 词：Nd^(3+)/Mg^(2+)共掺 钙钛矿结构 高能球磨-固相合成法 介电性能 

分 类 号：TQ174[化学工程—陶瓷工业]