两步烧结法制备BiFeO3-(Ba0.85Ca0.15)(Zr0.10Ti0.90)O3陶瓷的性能研究

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (11): 4201-4207.

两步烧结法制备BiFeO₃-(Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃陶瓷的性能研究

崔宇晗¹, 王维毅², 王挺³, 张景翔³, 刘旭罿³, 黄晨³, 卢俊铭³

1.河北轨道运输职业技术学院机电工程学院,石家庄 050000;
2.航空工业航宇救生装备有限公司,襄阳 441116;
3.惠州学院广东省电子功能材料与器件重点实验室,惠州 516000

收稿日期:2024-06-06 修订日期:2024-07-02 出版日期:2024-11-15 发布日期:2024-11-21
通信作者: 王挺,博士,副教授。E-mail:witton.wang@hzu.edu.cn
作者简介:崔宇晗(1990—),女,讲师。主要从事无机功能材料的研究。E-mail:262901532@qq.com
基金资助:
广东省教育厅高等学校项目(2021KQNCX095);广东省基础与应用基础研究基金(2022A1515140002)

Properties of BiFeO₃-(Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃ Ceramics Prepared by Two-Step Sintering Method

CUI Yuhan¹, WANG Weiyi², WANG Ting³, ZHANG Jingxiang³, LIU Xuchong³, HUANG Chen³, LU Junming³

1. School of Mechanical and Electrical Engineering, Hebei Vocational College of Rail Transportation, Shijiazhuang 050000, China;
2. Aerospace Life-Support Industries, Ltd, Xiangyang 441116, China;
3. Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices, Huizhou University, Huizhou 516000, China

Received:2024-06-06 Revised:2024-07-02 Published:2024-11-15 Online:2024-11-21

摘要/Abstract

摘要： 在BiFeO₃中引入钙钛矿氧化物(Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃可有效改善陶瓷的铁电性能,但采用传统固相法制备陶瓷时烧结温度高,导致材料内部缺陷较多。本文利用高温(T₁)短时烧结和低温(T₂)长时保温的两步烧结法,研究T₁对0.7BiFeO₃-0.3(Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃-0.15%(质量分数)MnCO₃(简写为0.7BF-0.3BCZT)陶瓷相组成、微观结构、铁电和介电性能的影响。结果表明:所制备的陶瓷为纯相,其相结构为菱方和赝立方相共存。随着T₁的升高,陶瓷的密度、介电常数和剩余极化强度呈先增加后降低趋势。在T₁=1 040 ℃时,陶瓷具有最优的介电和铁电性能,此时最大介电常数和剩余极化强度分别为6 706.10和8.53 μC/cm²。

关键词: BiFeO₃, (Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃, 铁电陶瓷, 两步烧结法, 介电常数, 极化强度

Abstract: The ferroelectric property of ceramics can be significantly improved by adding (Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃ into BiFeO₃. However, the sintering temperature of ceramics prepared by traditional solid-state method is high, resulting in increasing internal defects of ceramic materials. In this study, 0.7BiFeO₃-0.3(Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃-0.15% (mass fraction) MnCO₃ (abbreviated as 0.7BF-0.3BCZT) ceramics were sintered using the two-step sintering method based on the short-term sintering at high temperature (T₁) and long-term holding at low temperature (T₂). The effect of T₁ temperature on the phase composition, microstructure, ferroelectric and dielectric properties of as-prepared ceramics was investigated. The results reveal that the phase structures of as-prepared ceramics are coexistence of rhombohedral and pseudo-cubic phases with no evidence of secondary phase. With the increase of T₁ sintering temperature, the bulk density, dielectric constant and remanent polarization of ceramics increase first and then decrease. Consequently, the ceramics prepared at T₁=1 040 ℃ demonstrate excellent dielectric and ferroelectric properties. The maximum dielectric constant and remanent polarization are 6 706.10 and 8.53 μC/cm², respectively.

Key words: BiFeO₃, (Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃, ferroelectric ceramics, two-step sintering method, dielectric constant, polarization

中图分类号:

TQ174.75

崔宇晗, 王维毅, 王挺, 张景翔, 刘旭罿, 黄晨, 卢俊铭. 两步烧结法制备BiFeO₃-(Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃陶瓷的性能研究[J]. 硅酸盐通报, 2024, 43(11): 4201-4207.

CUI Yuhan, WANG Weiyi, WANG Ting, ZHANG Jingxiang, LIU Xuchong, HUANG Chen, LU Junming. Properties of BiFeO₃-(Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃ Ceramics Prepared by Two-Step Sintering Method[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(11): 4201-4207.

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两步烧结法制备BiFeO₃-(Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃陶瓷的性能研究

Properties of BiFeO₃-(Ba_0.85Ca_0.15)(Zr_0.10Ti_0.90)O₃ Ceramics Prepared by Two-Step Sintering Method

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