Ultrasonic homogenization of equivolumetric Al2O3/ZrO2 suspensions

被引：0
作者：
C. Schmid
O. Sbaizero
机构：
[1] University of Trieste,Materials Engineering and Applied Chemistry Department
[2] University of Trieste,Materials Engineering and Applied Chemistry Department
来源：
Journal of Materials Science | 2000年 / 35卷
关键词：
Polymer; Microstructure; Mechanical Property; Solid Content; Aqueous Suspension;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The equivolumetric ZrO2-Al2O3 ceramic composite shows very good mechanical properties due to its interpenetrating microstructure; unfortunately it is very difficult to achieve a well dispersed aggregates’ free mixture. In this paper ultrasonication was used as a dispersion and mixing aid for aqueous suspension of ZrO2-Al2O3 powders. The suspensions were stabilised using either an electrostatic or an electrosteric mechanism. The influence of ultrasonication time as well as solid contents in the suspensions were investigated via rheological measurements. The goal was to optimise the process in order to obtain a well dispersed system without aggregates. The results indicate that there is, for every system, a threshold time over which aggregates start to reappear.
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页码：1213 / 1217
页数：4
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