Influence of the temperature on the stability of aqueous alumina suspensions

被引：44

作者：

Pagnoux, C ^{[1
]}

Serantoni, M ^{[1
]}

Laucournet, R ^{[1
]}

Chartier, T ^{[1
]}

Baumard, JF ^{[1
]}

机构：

[1] CNRS, ESA 6015, F-87065 Limoges, France

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 1999年 / 19卷 / 11期

关键词：

suspensions; electrokinetic properties; surfaces; Al2O3; temperature;

D O I：

10.1016/S0955-2219(99)00007-2

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Ceramic process need the preparation of very stable suspensions with high solid loading and the temperature is a fundamental parameter in surface chemistry and at various steps in the production process. The influence of the temperature on the stability of aqueous alumina suspensions dispersed either with the polymethacrylic acid sodium salt either with the Tron has been studied. The strong adsorption of the two dispersants onto alumina surface is not affected by the variation of the temperature but temperature higher than 40 degrees C strongly influences the amplitude of the repulsive potential created between the particules. By using the potentimetric data fitting software FITEQL 3.2, the electrokinetic properties of the suspensions at 20 degrees C are interpreted and viscosity measurements show that a temperature of 60 degrees C improves the stability of the suspensions and permits to concentrate it. (C) 1999 Elsevier Science Limited. All rights reserved.

引用

页码：1935 / 1948

页数：14

共 19 条

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[2]

Processing of aqueous alpha-Al2O3, alpha-SiO2 and alpha-SiC suspensions with polyelectrolytes. [J].