中南大学学报（自然科学版）2025，Vol.56Issue(6)：2216-2227,12.DOI:10.11817/j.issn.1672-7207.2025.06.007
WO3掺杂Na0.5Bi4.5Ti4O15压电陶瓷及其加速度传感器的制备与特性研究
Preparation and characterization of WO3-doped Na0.5Bi4.5Ti4O15 piezoelectric ceramics and its acceleration sensor
摘要
Abstract
Na0.5Bi4.5W2/3xTi4-xO15(NBTW-100x,0≤x≤0.16)bismuth layer piezoelectric ceramics were prepared by traditional solid phase method by replacing B-position Ti4+of Na0.5Bi4.5Ti4O15(NBT)with W6+.The structure and properties of NBTW-100x piezoelectric ceramics were systematically studied,modification mechanism of heterogeneous ions was revealed,and the optimal conditions for improving piezoelectric properties and high temperature resistivity of NBTW-100x were clarified.The results show that the comprehensive performance of NBTW-100x ceramics is the best when x=0.12,and its piezoelectric coefficient d33=24.4 pC/N,Curie temperature TC=633.2 ℃,resistivity ρ=2.58×1012 Ω·cm,its piezoelectric coefficient d33 and resistivity are as high as 23.6 pC/N and 6.75× 106 Ω·cm,respectively,after holding at 500 ℃ for 1 h,which is an ideal material for piezoelectric accelerometers at 500 ℃.Based on NBTW-12 piezoelectric ceramics,the compression piezoelectric acceleration sensor is developed,and its sensitivity has a relative deviation of 13.29％within 10-10 000 Hz.In the temperature range from room temperature to 500 ℃,sensitivity deviation is only±5％,and insulation resistance at 500 ℃ is as high as 4×107 Ω,which is expected to be applied in vibration monitoring and fault diagnosis of key components such as aircraft engines,fan drives and rotating machinery.关键词
铋层状/热稳定性/Na0.5Bi4.5Ti4O15/加速度传感器Key words
bismuth layer structure/thermal stability/Na0.5Bi4.5Ti4O15/acceleration sensor分类
信息技术与安全科学引用本文复制引用
郇正利,冯云云,费璇,常宁,季惠明..WO3掺杂Na0.5Bi4.5Ti4O15压电陶瓷及其加速度传感器的制备与特性研究[J].中南大学学报（自然科学版）,2025,56(6):2216-2227,12.基金项目
国家重点研发计划项目(2018YFB2003102)(Project(2018YFB2003102)supported by the National Key Research and Development Program of China) （2018YFB2003102）
