首页|(Bi0.5K0.5)0.92Zn0.08ZrO3掺杂(K0.5Na0.5)NbO3陶瓷的结构与电学性能之间的相关性

(Bi0.5K0.5)0.92Zn0.08ZrO3掺杂(K0.5Na0.5)NbO3陶瓷的结构与电学性能之间的相关性

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(1-x)(K0.5Na0.5)NbO3-x(Bi0.5K0.5)0.92Zn0.08ZrO3[KNN-xBKZZ]新型压电陶瓷通过传统固相制备工艺制备,详细研究了新组元(Bi0.5K0.5)0.92Zn0.08ZrO33[BKZZ]对KNN陶瓷结构和电性能的影响.陶瓷样品通过XRD,SEM等测试结果表明,BKZZ全部进入KNN晶格中,形成了单一的钙钛矿结构和致密的微观结构,并且在0.03≤x≤0.06时成功构建出多晶型相界(PPB).由于PPB降低了极化翻转的自由能,在x=0.05时获得了最佳综合性能,分别为:d33=330pC/N,kp=49%,εr=1374,tanδ=2.4%,Tc=345℃.KNN-x BKZZ 陶瓷具有优良的压电性能和高的居里温度,为提高陶瓷的电学性能提供了新的思路.
Correlation Between Structural and Electrical Properties of(K0.5Na0.5)NbO3 Ceramics Doped with(Bi0.5K0.5)0.92Zn0.08ZrO3
(1-x)(K0.5Na0.5)NbO3-x(Bi0.5K0.5)0.92Zn0.08ZrO3[KNN-xBKZZ]new piezoelectric ceramics prepared by conventional solid-state method,and the effect of(Bi0.5K0.5)0.92Zn0.08ZrO33[BKZZ]on properties of KNN-based ceramics was investigated in detail.The results of XRD,SEM and other tests on the ceramic samples indicate that BKZZ enters the KNN lattice completely,forming a pure perovskite phase and dense microstructure,and successfully constructing a polycrystalline phase boundary(PPB)at 0.03≤x≤0.06.Due to the PPB reduces the free energy of polarization rotation,the best overall prop-erties are obtained at x=0.05,with the corresponding values of d33=330pC/N,k p=49%,εr=1374,tanδ=2.4%,and Tc=345℃.KNN-x BKZZ has excellent piezoelectric properties and high Curie temperature,providing a new idea for enhancing the electrical properties of ceramics.

polymorphic phase boundariespiezoelectric ceramicselectrical propertiescurie temperature

程恒文、尹奇异、郑瑞华、张先招

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合肥学院能源材料与化工学院,安徽合肥 230601

多晶型相界 压电陶瓷 电学性能 居里温度

2022年国家级本科生创新创业项目2022年国家级本科生创新创业项目2021年合肥学院研究生创新创业项目2022年新时代教育质量工程项目安徽省高等学校省级质量工程项目

20221105905020221105906921YCXL472022xscx1462019jyxm1161

2024

佳木斯大学学报(自然科学版)
佳木斯大学

佳木斯大学学报(自然科学版)

影响因子:0.159
ISSN:1008-1402
年,卷(期):2024.42(2)
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