Structure, sintering behavior and dielectric properties of silica-coated BaTiO3

被引：25

作者：

Chen, RZ ^{[1
]}

Cui, AL

Wang, HH

Gui, ZL

Li, LT

机构：

[1] Tsing Hua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

[2] Tsing Hua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

MATERIALS LETTERS | 2002年 / 54卷 / 04期

关键词：

coating; SiO2; BaTiO3; sintering; dielectric;

D O I：

10.1016/S0167-577X(01)00584-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Silica was homogeneously coated on the surface of barium titanate (BaTiO3, BT) fine particles via sol-gel method. The thickness of silica film was about 5 tun. High-resolution transmission electron microscope (HRTEM) investigation and energy dispersion spectrometry (EDS) analysis proved that there was silica coated on BaTiO3. The coating mechanism is that after BaTiO3 hydrolyzed slightly, Na2SiO3 gelatinized on the surface of TiO2. Compared with pure BaTiO3 the coating process can improve sintering behavior and flatten temperature coefficients (TC) curves of ceramics based on BaTiO3. (C) 2002 Elsevier Science B.V All rights reserved.

引用

页码：314 / 317

页数：4

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