標題: Surface modification of Dy2O3-Nb2O5 dope mix for dielectric materials in aqueous dispersion
作者: Lee, WH
Tseng, TY
Hennings, D
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: BaTiO3 and titanates;dielectric properties;multilayer ceramic capacitors;perovskites;suspensions
公開日期: 1-Jun-2000
摘要: The electrokinetic mismatch between the basic dielectric compound (Ba,Ca)(Ti,Zr)O-3 (BCTZ) and Dy2O3-Nb2O5 dope mix in aqueous suspensions has been improved by a pre-firing and milling treatment of the dope mix. Pre-fired dope mix showed a much higher zeta potential which resulted in a drastic improvement of the particle dispersion in aqueous slurries. By use of surface-modified dope mix the homogeneity of the micro structure of multilayer ceramic capacitors is improved and the break-down voltage of thin (7 mu m) dielectric layers increased. The results observed indicate the critical influence of the micro structural homogeneity on the breakdown voltage of MLCCs. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.
URI: http://hdl.handle.net/11536/30505
ISSN: 0955-2219
期刊: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume: 20
Issue: 7
起始頁: 977
結束頁: 982
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