现代技术陶瓷2025，Vol.46Issue(1)：72-85,14.DOI:10.16253/j.cnki.37-1226/tq.2025.01.005
直写成型Bi2SiO5基铁电材料及其性能研究
Direct Ink Writing of Bi2SiO5-Based Ferroelectric Materials
摘要
Abstract
in recent years,Bi2SiO5 has attracted widespread attention for its excellent ferroelectric properties and has become a research hotspot for low-cost and environmentally friendly ferroelectric materials.However,traditional molding technology struggles to meet the demands for high precision and complex structures.This paper utilizes direct writing technology to rapidly prepare bulk ferroelectric materials based on Bi2SiO5,laying the foundation for manufacturing devices with complex structures.By studying the rheology of slurries with different PVA contents and solid contents,the optimal preparation conditions were established.A systematic study of direct writing molding process parameters and other factors was conducted,and performance tests demonstrated the ferroelectric properties and energy storage characteristics of Bi2SiO5-basedbulk materials at different sintering temperatures.The optimal slurry formulation was determined to be:73.9 wt.％solid content,3.2 wt.％polyvinyl alcohol,and 0.5 wt.％each of polyethylene glycol and glycerol.The optimal direct writing molding parameters for Bi2SiO5 ceramic slurry were determined to be:printing nozzle inner diameter of 0.41 mm,substrate material of filter paper,printing speed of 20 mm/s,and layer height set to 0.41 mm.Bi2SiO5 green bodies with close-packed and wood-pile structures were formed at line spacings of 0.50 mm and 0.80 mm,respectively.The Bi2SiO5-based bulk ferroelectric materials prepared by direct writing molding exhibited low ρ and εr values,and slender hysteresis loops.After sintering at 620℃,the material showed high energy storage density(0.0470 J·cm-3)and energy storage efficiency(89.59％).However,when the temperature was increased to 700℃,the material essentially lost its ferroelectricity,resulting in the lowest energy storage density,but still maintained very high energy storage efficiency(98.54％).These results provide important information for the direct writing preparation of Bi2SiO5 ferroelectric materials and highlight their application potential in the energy storage field.关键词
直写成型/Bi2SiO5/铁电性能/介电性能Key words
direct ink writing/Bi2SiO5/ferroelectric properties/dielectric properties分类
化学化工引用本文复制引用
江红涛,杨昕昊,王奔,王昊..直写成型Bi2SiO5基铁电材料及其性能研究[J].现代技术陶瓷,2025,46(1):72-85,14.基金项目
西安市科技局项目(23ZDCYJSGG0046-2022) （23ZDCYJSGG0046-2022）
