曹文萍,高岩,王状,陈尚,谷吉海.Na0.5Bi0.5TiO3基无铅陶瓷的制备及电致伸缩效应研究[J].包装工程,2022,43(13):1-8.
CAO Wen-ping,GAO Yan,WANG Zhuang,CHEN Shang,GU Ji-hai.Preparation and Electrostrictive Effect of Na0.5Bi0.5TiO3-based Lead-free Ceramics[J].Packaging Engineering,2022,43(13):1-8. |
| Na0.5Bi0.5TiO3基无铅陶瓷的制备及电致伸缩效应研究 |
| Preparation and Electrostrictive Effect of Na0.5Bi0.5TiO3-based Lead-free Ceramics |
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| DOI：10.19554/j.cnki.1001-3563.2022.13.001 |
| 中文关键词: 钛酸铋钠基陶瓷 缺陷 电致伸缩效应 |
| 英文关键词: Na0.5Bi0.5TiO3-based ceramics defects electrostrictive effect |
| 基金项目:国家自然科学基金（51802061）；黑龙江省普通本科高等学校青年创新人才培养计划（UNPYSCT?2020215）；哈尔滨商业大学科研项目（2020CX05） |
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| 中文摘要: |
| 目的 在Na0.5Bi0.5TiO3基陶瓷材料中诱导缺陷来提高其电致伸缩性能，在室温下获得性能优异的电致伸缩材料，该材料可用于包装机械物料供给微振动器的研发。方法 利用传统固相合成法制备0.7(Bi0.5Na0.5)Ti0.9Mn0.1O3−0.3Sr(1−3x/2)Bix□x/2TiO3（NBT−SBxT−Mn）陶瓷。通过掺杂Sr(1−3x/2)Bix□x/2TiO3，在陶瓷中形成VA−VO局部缺陷，获得具有极性纳米微区的非极性相结构。同时，通过掺杂MnO在陶瓷中形成Mn−VO缺陷偶极子，获得滞后小的电致伸缩应变。结果 所制备的样品均表现出极性纳米微区的非极性相结构和弥散度高于1.80的典型弛豫特征。随着x的增加，氧空位的含量先降低后明显增大。氧空位含量的降低表明在NBT−SBxT−Mn陶瓷中形成了Mn−VO缺陷偶极子。在VA−VO局部缺陷、Mn−VO缺陷偶极子、较高弛豫性及形成的极性纳米微区的共同作用下，组分x=0.07样品的电致伸缩系数高达0.036 m4/C2，性能优异。结论 通过在NBT基陶瓷材料中诱导缺陷能够有效改善其电致伸缩性能。 |
| 英文摘要: |
| The paper aims to propose a novel design strategy to enhance the electrostrictive property of Na0.5Bi0.5TiO3-based materials by inducing defects, which can be used in ink-jet printing of packaging materials. 0.7 (Bi0.5Na0.5) Ti0.9Mn0.1O3-0.3Sr(1-3x/2)Bix□x/2TiO3 (NBT-SBxT-Mn) ceramics were prepared using a conventional solid-state reaction method. The local defects could be created by VA and VO in the ceramics though modifying with Sr(1-3x/2)Bix□x/2TiO3, leaving a "non-polar" phase with PNRs at zero electric field. Meanwhile, defect dipoles originated from Mn and VO were induced into the ceramics by doping MnO, resulting in high electrostrictive strain with ultra-low hysteresis. All the samples exhibited both nonpolar phase structure with PNRs and typical features of relaxor characteristics with γ>1.80. With the increasing doping content x, the oxygen vacancy concentration decreased firstly and then had an obvious increase. The decrease of VO concentration reflects the increase of defect dipole formation in NBT-SBxT-Mn ceramics. Accordingly, high electrostrictive coefficients Q33=0.036 m4/C2 were achieved for the composition of x=0.07 due to the combined contribution of VA-VO local defects, Mn-VO defect dipoles, the relaxor characteristics and the formed PNRs. These results provide some instructive thought to further enhance the electro-strictive property of NBT-based materials by inducing defects |
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