欢迎访问《人工晶体学报》官方网站,今天是 2025年8月11日 星期一 分享到:

人工晶体学报 ›› 2025, Vol. 54 ›› Issue (6): 1061-1067.DOI: 10.16553/j.cnki.issn1000-985x.2024.0258

• 研究论文 • 上一篇    下一篇

Co掺杂Na0.5Bi4.5Ti4O15铋层状无铅压电陶瓷制备及电学性能研究

张飞洋(), 闫锋, 娄岳, 李波江, 李杰   

  1. 中国电子科技集团公司第四十六研究所,天津 300220
  • 收稿日期:2024-10-27 出版日期:2025-06-20 发布日期:2025-06-23
  • 作者简介:张飞洋(1992—),女,天津市人,硕士,工程师。E-mail:zhangfeiyang2014@163.com

Preparation and Electrical Properties of Co Doped Na0.5Bi4.5Ti4O15 Bismuth-Layered Lead-Free Piezoelectric Ceramics

ZHANG Feiyang(), YAN Feng, LOU Yue, LI Bojiang, LI Jie   

  1. The 46th Research Institute,China Electronics Technology Group Corporation,Tianjin 300220,China
  • Received:2024-10-27 Online:2025-06-20 Published:2025-06-23

摘要: 使用传统固相反应法制备了Na0.5Bi4.5Ti4-x Co x O15x=0、0.025、0.050、0.075)铋层状无铅压电陶瓷。采用XRD、SEM、EDS、XPS及相关电学参数测试系统表征了样品的晶体结构、断面形貌、氧空位情况及介电、压电、铁电等性能,探究不同Co掺杂含量对陶瓷性能的影响。结果表明:当掺杂含量x=0.050时,样品的物相组成单一均匀,晶粒呈现片层状,相对密度较高,压电常数可达34.7 pC/N,介电损耗仅为0.30%,居里温度为672 ℃,500 ℃时高温电阻率为1.62×107 Ω·cm,并且具有很好的温度稳定性,说明掺杂改性后的Na0.5Bi4.5Ti3.95Co0.05O15陶瓷在高温高频领域具有潜在的市场应用价值。

关键词: Co掺杂; 铋层状无铅压电陶瓷; 固相反应法; 压电性能; 热稳定性; 电学性能

Abstract: High Curie temperature bismuth-layered lead-free piezoelectric ceramics based on Na0.5Bi4.5Ti4-x Co x O15x=0, 0.025, 0.050, 0.075) were prepared by conventional solid state reaction method. The crystal structure, fracture morphology, oxygen vacancy status, as well as the dielectric, piezoelectric and ferroelectric properties of the samples were characterized by XRD, SEM, EDS, XPS and related electrical parameter testing systems. The influence of different doping contents of Co on the ceramic properties was investigated. The results show that when the doping content of Co is 0.050, the sample exhibits a single and uniform phase composition, with a lamellar structure and high densification. The piezoelectric constant is 34.7 pC/N. The dielectric loss is only 0.30% and the Curie temperature is 672 ℃. The high temperature resistivity at 500 ℃ is 1.62×107 Ω·cm. Meanwhile, the sample demonstrates excellent temperature stability, suggesting that the doped Na0.5Bi4.5Ti3.95Co0.05O15 ceramic has potential market applications value in high-temperature and high- frequency fields.

Key words: Co doping; bismuth-layered lead-free piezoelectric ceramics; solid state reaction method; piezoelectric property; thermal stability; electrical property

中图分类号: