微波辅助sol-gel法合成Bi0.5Na0.5TiO3粉体及其压电性能研究
Study on Microwave-Assisted Sol-Gel Synthesis of Bi0.5Na0.5TiO3 Powders and Their Piezoelectric Properties
武家莹 1刘佳 1胡月 1房国丽 1郭小雷 2范玉杰2
作者信息
- 1. 北方民族大学 材料科学与工程学院,宁夏 银川 750021
- 2. 宁夏坤达自动化科技有限公司,宁夏 银川 750021
- 折叠
摘要
采用微波辅助溶胶-凝胶(sol-gel)法制备Bi0.5Na0.5TiO3(BNT)粉体,通过DSC/TG,XRD,SEM,FT-IR等表征方法,分析BNT的反应历程,煅烧温度对BNT成分、晶粒尺寸和压电性能的影响.结果表明,当微波煅烧温度为 650℃时,可合成出高纯度BNT粉体(30～120 nm),其居里温度为 394℃,d33=7.5 pC/N,εr=535.58,tan δ=0.29.对比传统马弗炉煅烧sol-gel法,微波辅助sol-gel法有利于提高BNT的介电性能和居里温度,降低介质损耗.
Abstract
Bi0.5Na0.5TiO3(BNT)particles were synthesized by a microwave-assisted sol-gel method.Characterization techniques such as DSC/TG,XRD,SEM,and FT-IR were employed to analyze the reaction process of BNT and the effects of calcination temperature on the composition,grain size,and piezoelectric properties of BNT.The results showed that high-purity BNT particles of 30 nm to 120 nm could be synthesized at a microwave calcination temperature of 650℃,with a Curie temperature of 394℃,a piezoelectric constant(d33)of 7.5 pC/N,a relative permittivity(εr)of 535.58,and a dielectric loss(tan δ)of 0.29.Compared to the traditional muffle furnace calcination sol-gel method,the microwave-assisted sol-gel approach enhances the dielectric properties and Curie temperature of BNT,while reducing the dielectric loss.
关键词
钛酸铋钠/溶胶-凝胶(sol-gel)法/微波烧结/介电损耗/压电性能Key words
Bi0.5Na0.5TiO3/sol-gel method/microwave calcination/dielectric loss/piezoelectric properties引用本文复制引用
基金项目
国家自然科学基金资助项目(52369020)
银川市校企联合创新发展专项基金资助项目(2022XQ002)
宁夏重点研发计划基金资助项目(2019BFG02018)
北方民族大学高层次人才计划基金资助项目()
出版年
2024
国家科技期刊平台
NSTL
万方数据