Effect of Synthesis Process on the Preparation of Pure Barium Titanate Powder with High Tetragonality by Solid State Reaction

被引：0

作者：

Lu Y. ^{[1
,2
]}

Zhou B. ^{[2
,3
]}

Han B. ^{[1
,2
]}

Zhao G. ^{[2
,3
]}

Chen X. ^{[2
,4
]}

Wang G. ^{[4
]}

机构：

[1] School of Rare Earths, University of Science and Technology of China, Hefei

[2] Ganjiang Innovation Academy, Chinese Academy of Sciences, Jiangxi, Ganzhou

[3] School of Physics and Materials Science, Nanchang University, Nanchang

[4] Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai

来源：

Cailiao Daobao/Materials Reports | 2024年 / 38卷 / 07期

基金：

中国国家自然科学基金;

关键词：

barium titanate; high tetragonality; solid state reaction; synthesis process;

D O I：

10.11896/cldb.22080107

中图分类号：

学科分类号：

摘要：

arium titanate is an important functional ceramic material,which is widely used in electronic components such as multilayer ceramic capacitors (MLCC)due to its excellent dielectric properties‧ BaTiO3 powders with uniform morphology and high tetragonality were synthesized by solid state reaction between barium carbonate and titanium dioxide as the raw materials in this study‧ Then the effects of synthesis process (synthesis temperature,heating rate and holding time)on the BaTiO3 powders were investigated systematically‧ The products were characterized by thermogravimetric / differential thermal analysis (TG / DTA),X-ray diffraction (XRD)and field emission scanning electron microscopy (SEM)‧ The results showed that the synthesis temperature mainly affected the tetragonality of BaTiO3 powders,the hold time and heating rate mainly affected the particle size and size distribution;the BaTiO3 powders with an average particle size of 400 nm and a tetragonality (c / a)of 1‧ 009 1 were prepared at a synthesis temperature of 1 050 ℃,a heating rate of 5 ℃ / min,and a hold time of 3 h‧ The work provided a good research idea for the preparation of high-reliability pure BaTiO3 powders used for MLCC by solid state reaction. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.

引用

共 20 条

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