INSITU MEASUREMENT OF SILICA-GEL COATING ON PARTICLES OF ALUMINA

被引：14

作者：

AGRAWAL, DC ^{[1
]}

RAJ, R ^{[1
]}

COHEN, C ^{[1
]}

机构：

[1] CORNELL UNIV,SCH CHEM ENGN,ITHACA,NY 14853

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1990年 / 73卷 / 07期

关键词：

alumina; coatings; gels; silica; zeta potential;

D O I：

10.1111/j.1151-2916.1990.tb05296.x

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：

Time‐dependent growth of a silica layer on alumina particles suspended in a polymeric silica solution has been measured by monitoring the changes in the zeta potential of the alumina particles. There is an incubation period in the process, suggesting that the silica film forms by a nucleation‐and‐growth mechanism. The coated alumina particles are found to flocculate as their zeta potential approaches that of silica near its isoelectric point. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：2163 / 2164

页数：2

共 8 条

[1] NUCLEATION OF FLOCS IN DILUTE COLLOIDAL SUSPENSIONS [J].