Dispersion of nano-sized BaTiO3 powders in nonaqueous suspension with phosphate ester and their applications for MLCC

被引：44

作者：

Chu, Li Wen ^{[1
]}

Prakash, Kuraganti Niranjan ^{[1
]}

Tsai, Men-Tsuan ^{[1
]}

Lin, I-Nan ^{[2
]}

机构：

[1] Walsin Technol Corp, Div Res & Dev, Kaohsiung 300, Taiwan

[2] Tamkang Univ, Dept Phys, Tamsui 251, Taiwan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2008年 / 28卷 / 06期

关键词：

suspensions; tape-casting; nanocomposites; BaTiO3; capacitors;

D O I：

10.1016/j.jeurceramsoc.2007.10.015

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The stability of nano-sized BaTiO3 nonaqueous suspension with different phosphate ester surfactants was investigated. Among the three phosphate esters (mono-alkyl, di-alkyl and ethoxy types), the 2-ethoxy ethyl dihydrogen (1EO-) phosphate esters show not only better coverage over the nano-BaTiO3 powders, but also superior dispersion for the suspension. Contrary to the conventional 200 nm-BaTiO3 suspensions, which need longer carbon-chain phosphate esters surfactant for dispersing the BaTiO3 powders, the 50 nm-BaTiO3 suspensions require shorter carbon-chain phosphate esters surfactant for dispersing them. Multilayer ceramic capacitors (MLCC) made of 50 nm-BaTiO3 suspensions contain ultra-thin ceramic layer (2.6-2.8 mu m), which shows the larger capacitance and superior breakdown voltage than those made of 200 nm-BaTiO3 powders. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1205 / 1212

页数：8

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