Microwave-hydrothermal synthesis and characterization of barium titanate powders

被引：113

作者：

Newalkar, BL

Komarneni, S ^{[1
]}

Katsuki, H

机构：

[1] Penn State Univ, Mat Res Lab, University Pk, PA 16802 USA

[2] Saga Ceram Res Lab, Saga 8440024, Japan

来源：

MATERIALS RESEARCH BULLETIN | 2001年 / 36卷 / 13-14期

关键词：

submicron sized barium titanate; dielectric material; microwave hydrothermal synthesis;

D O I：

10.1016/S0025-5408(01)00729-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The synthesis of barium titanate (BaTiO3) has been investigated under microwave-hydrothermal (M-H) conditions in the temperature range of 60-160 degreesC using BaCl2, and TiCl4 as B a, and Ti sources, respectively. The crystallized products were characterized by powder X-ray diffraction (XRD), scaning electron microscopy (SEM), thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and particle-size analysis techniques. The results showed the crystallization of BaTiO3 phase at all the synthesis temperatures along with the formation of BaCO3 as a minor impurity. The crystallization of BaTiO3 powder having an average crystallite size of 0.3 mum with CO32- content of 0.8% was achieved at 160 degreesC in the presence of 10 M NaOH in 3 h. These results show that the M-H synthesis route is rapid, cost effective, and could serve as an alternative to obtain BaTiO3 powders with submicron particle size. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：2347 / 2355

页数：9

共 21 条

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