高能球磨法制备铌酸钾钠基陶瓷及其性能研究  

Preparation and Characterization of KNN-based Ceramics with High Energy Ball Milling

作　　者：任梓江 陈碧[1] 徐俊卓 晁小练[2] 杨祖培[2] REN Zijiang;CHEN Bi;XU Junzhuo;CHAO Xiaolian;YANG Zupei(School of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,Shaanxi,China;School of Materials Science and Engineering,Shaanxi Normal University,Xi'an 710062,Shaanxi,China)

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]陕西师范大学材料科学与工程学院,陕西西安710062

出　　处：《陶瓷学报》2024年第3期595-600,共6页Journal of Ceramics

基　　金：陕西省科技厅项目(2023-YBGY-162);陕西省教育厅青年创新团队项目(23JP204);榆林学院博士科研启动项目(21GK10)。

摘　　要：采用高能球磨法制备0.94K_(0.5)Na_(0.5)NbO_(3)-0.06Ba(Mg_(1/3)Nb_(2/3))O_(3)(0.94KNN-0.06BMN)陶瓷,考察了高能球磨浆料粒径与传统球磨浆料粒径的变化,优选出高能球磨粉体的预烧温度,进一步对比研究了高能球磨法与传统球磨法对所制0.94KNN-0.06BMN陶瓷的相结构、微观结构、介电性能和铁电性能的影响。结果表明,高能球磨法不仅极大缩短了该陶瓷的制备时间,且在初始粉体颗粒细化、陶瓷晶粒细化等方面有显著的促进作用,这进一步导致陶瓷的介电性能和铁电性能发生较大变化,如高能球磨法制备的陶瓷在1 kHz下的最大介电常数增加了约470,剩余极化强度增加了约20.9μC·cm^(−2),矫顽电场提高了约19.7 kV·cm^(−1)。0.94K_(0.5)Na_(0.5)NbO_(3)-0.06Ba(Mg_(1/3)Nb_(2/3))O_(3)(0.94KNN-0.06BMN)ceramics were prepared by using high energy ball milling method.Particle sizes of the slurries prepared by using high energy ball milling and traditional ball milling were studied,while calcination temperature of the high energy ball milled powders was optimized.Furthermore,phase structure,microstructure,dielectric properties and ferroelectric properties of the 0.94KNN-0.06BMN ceramics were studied.The high energy ball milling method not only greatly shortened the preparation time,but also refined initial particles of the powders and grains of the final ceramics,thus leading to great changes in dielectric and ferroelectric properties.For example,dielectric constant of the ceramics prepared by using the high energy ball milling method was about 470 at 1 kHz.The remanent polarization intensity was about 20.9μC·cm^(−2)and the coercive electric field was about 19.7 kV·cm^(−1).

关 键 词：铌酸钾钠陶瓷 高能球磨法 介电性能 铁电性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]