Oxide slurries stability and powders dispersion: Optimization with zeta potential and rheological measurements

被引:175
作者
Vallar, S [1 ]
Houivet, D [1 ]
El Fallah, J [1 ]
Kervadec, D [1 ]
Haussonne, JM [1 ]
机构
[1] Ecole Ingn Cherbourg, Lab Univ Sci Appl, F-50130 Octeville, France
关键词
rheology and zeta potential; mixing; powders solid state reaction; milling;
D O I
10.1016/S0955-2219(98)00365-3
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
Slurries stability and powder dispersion are highly dependent on both the pH and their density. The analysis of these parameters allows us to keep the slurries defloculated, leading to an optimum mix of powders before calcination and reaction. The present work is devoted to the mixing of the different oxide and carbonate components in slurries to be synthesized by solid state reaction of the (Zr,Sn)TiO4 (ZST) microwave dielectric and the Pb(Mg1/3Nb2/3)O-3 (PMN) compositions. Their rheological properties and zeta potential measurements characterized slurries. These techniques allowed tw to optimize the dispersion parameters of the oxide slurries. We have therefore been able to synthesize as well pure PMN and ZST microwave resonators with very high performances. (C) 1999 Elsevier Science Limited. All rights reserved.
引用
收藏
页码:1017 / 1021
页数:5
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