TY - JOUR
T1 - Surface modification of Dy2O3-Nb2O5 dope mix for dielectric materials in aqueous dispersion
AU - Lee, Wen Hsi
AU - Tseng, T. Y.
AU - Hennings, Detlev
PY - 2000/6
Y1 - 2000/6
N2 - The electrokinetic mismatch between the basic dielectric compound (Ba,Ca)(Ti,Zr)O3 (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 μm) dielectric layers increased. The results observed indicate the critical influence of the micro structural homogeneity on the breakdown voltage of MLCCs.
AB - The electrokinetic mismatch between the basic dielectric compound (Ba,Ca)(Ti,Zr)O3 (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 μm) dielectric layers increased. The results observed indicate the critical influence of the micro structural homogeneity on the breakdown voltage of MLCCs.
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U2 - 10.1016/S0955-2219(99)00214-9
DO - 10.1016/S0955-2219(99)00214-9
M3 - Article
AN - SCOPUS:0033743853
SN - 0955-2219
VL - 20
SP - 977
EP - 982
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 7
ER -