Influence of feedstock concentration on tetragonality and particle size of hydrothermally synthesized barium titanate powders

Li, Jian1; He, Kai1; Zhou, Zhi-Hui1; Huang, Hao1; Zhang, Lei1; Lou, Chao-Gang2; Yu, Hong-Yu1

2017-12

10.1016/j.ceramint.2017.07.229

CERAMICS INTERNATIONAL   影响因子和分区

0272-8842

1873-3956

Barium titanate (BaTiO3) powders were synthesized through hydrothermal process with Ba(OH)(2)center dot 8H(2)0 and TiO2. By increasing the feedstock concentration (FC) from 0.25 to 1.50 M, BaTiO3 powders maintain a stable average particle size (similar to 180 nm and similar to 6.4441 m(2)/g) with an increasing tetragonality (c/a: 1.0065-1.0075). Johnson-Mehl-Avrami and standard reaction rate equations were adopted to analyze the kinetic process of BaTiO3 formation. The reaction is governed by first-order and phase-boundary-controlled mechanism for 0.25 M and 1.50 M, respectively. Lower extent of reaction is believed to lead to the better tetragonality for BaTiO3 powders fabricated with higher FC. On the other hand, the relative stable particle size is correlated with the unvaried nucleation frequency and grain growth rate with various FC. This work can provide a guideline to manipulate the properties of BaTiO3 powders used in electronic industry.

Barium titanate Hydrothermal synthesis Tetragonality enhancement Stable particle size Kinetics analysis

SCI ; EI

英语

第一 ; 通讯

project of Energy-Efficient Si Based GaN Power Devices[KQCX20140522151322946]

Materials Science

Materials Science, Ceramics

WOS:000413175300034

ELSEVIER SCI LTD

20173504091572

Barium titanate ; Feedstocks ; Grain growth ; Hydrothermal synthesis ; Particle size ; Powders ; Titanium dioxide

Chemical Reactions:802.2 ; Inorganic Compounds:804.2 ; Crystal Growth:933.1.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Southeast Univ, Sch Elect Sci & Engn, Nanjing 210096, Jiangsu, Peoples R China

Li, Jian,He, Kai,Zhou, Zhi-Hui,et al. Influence of feedstock concentration on tetragonality and particle size of hydrothermally synthesized barium titanate powders[J]. CERAMICS INTERNATIONAL,2017,43(17):14813-14817.

Li, Jian.,He, Kai.,Zhou, Zhi-Hui.,Huang, Hao.,Zhang, Lei.,...&Yu, Hong-Yu.(2017).Influence of feedstock concentration on tetragonality and particle size of hydrothermally synthesized barium titanate powders.CERAMICS INTERNATIONAL,43(17),14813-14817.

Li, Jian,et al."Influence of feedstock concentration on tetragonality and particle size of hydrothermally synthesized barium titanate powders".CERAMICS INTERNATIONAL 43.17(2017):14813-14817.