[1]陈智慧,李志伟,丁建宁.纳米Dy2O3掺杂BCTZ压电陶瓷的电学性能[J].常州大学学报(自然科学版),2017,(04):13-18.[doi:10.3969/j.issn.2095-0411.2017.04.003]
　CHEN Zhihui,LI Zhiwei,DING Jianning.Nano-Sized Dy2O3 Doping on BCTZ Ceramics and the Electrical Properties[J].Journal of Changzhou University(Natural Science Edition),2017,(04):13-18.[doi:10.3969/j.issn.2095-0411.2017.04.003]
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纳米Dy2O3掺杂BCTZ压电陶瓷的电学性能()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2017年04期
页码:
13-18
栏目:
材料科学与工程
出版日期:
2017-07-30

文章信息/Info

Title:
Nano-Sized Dy2O3 Doping on BCTZ Ceramics and the Electrical Properties
作者:
陈智慧; 李志伟; 丁建宁
常州大学 材料科学与工程学院,江苏 常州 213164
Author(s):
CHEN Zhihui;  LI Zhiwei;  DING Jianning
School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China
关键词:
纳米 Dy2O3;  BCTZ;  介电;  压电性
Keywords:
nano Dy2O3;  BCTZ;  dielectric;  piezoelectric properties
分类号:
TM 28; TQ 174
DOI:
10.3969/j.issn.2095-0411.2017.04.003
文献标志码:
A
摘要:
采用共沸蒸馏沉淀法制备了平均粒径为16 nm,分散性良好的Dy2O3纳米粉体。将纳米粉体按照0.5%,1.0%的比例掺入Ba0.85Ca0.15(Ti0.9Zr0.1)O3(BCTZ)中,在1 480 ℃,1 490 ℃的温度下固相烧结2 h得到纳米Dy2O3掺杂的Ba0.85Ca0.15(Ti0.9Zr0.1)O3无铅压电陶瓷(BCTZ-Dy)。XRD分析表明,掺杂纳米Dy2O3没有改变纯BCTZ陶瓷的钙钛矿结构。陶瓷的致密度均大于93.66%。BCTZ-Dy陶瓷的室温介电常数和介电损耗均随频率的增加而降低,表现出明显的频率弥散现象和介电峰宽化的弥散相变特征,表明该陶瓷样品为弛豫铁电体。纳米Dy2O3的加入使BCTZ的临界温度由95.18 ℃降低至77.85 ℃,同时使BCTZ陶瓷的弛豫性能降低。
Abstract:
Dy2O3 nanopowders with well dispersion and average particle size of 16 nm were prepared by an azeotropic co-precipitation method. Ba0.85Ca0.15(Ti0.9Zr0.1)O3-Dy2O3 (BCTZ-Dy)lead-free piezoelectric ceramics doped with the as-prepared nano-Dy2O3(0.5%,1.0%)were synthesized at 1 480 ℃ and 1490 ℃ for 2 hours using solid-state sintering method. The influence of nano-Dy2O3 doping on microstructure and electrical properties of BCTZ ceramics were investigated. X-ray diffraction analysis showed that all the BCTZ ceramics still exhibited perovskite structure with the addition of nano-Dy2O3. The densities of the ceramics samples were all above 93.66%. The dielectric constant and dielectric loss of the BCTZ-Dy ceramics decreased with the increasing frequency. The Curie Temperature of BCTZ-Dy piezoceramics reduced from 95.18 ℃ to 77.85 ℃, the ceramics show typical diffuse phase transition and dielectric relaxor. The piezoelectric constant of d33 of BCTZ ceramics decreased with the addition of Dy2O3.

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备注/Memo

备注/Memo:
收稿日期:2016-12-29。基金项目:江苏省高校自然科学基金重大项目(15KJA43002)。作者简介:陈智慧(1977—),女,吉林通化人,博士,副教授,主要从事低维材料和功能陶瓷材料研究。
更新日期/Last Update: 2017-07-20