ROLE OF PARTICLE DISSOLUTION IN THE STABILITY OF BINARY YTTRIA-SILICACOLLOIDAL SUSPENSIONS

Authors
YASREBI M ZIOMEKMOROZ M KEMP W STURGIS DH
Citation
M. Yasrebi et al., ROLE OF PARTICLE DISSOLUTION IN THE STABILITY OF BINARY YTTRIA-SILICACOLLOIDAL SUSPENSIONS, Journal of the American Ceramic Society, 79(5), 1996, pp. 1223-1227
Citations number
34
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of the American Ceramic Society → ACNP
ISSN journal
00027820
Volume
79
Issue
5
Year of publication
1996
Pages
1223 - 1227
Database
ISI
SICI code
0002-7820(1996)79:5<1223:ROPDIT>2.0.ZU;2-M
Abstract
The stability of yttria-silica binary aqueous colloidal suspensions is examined as a function of time. It has been observed that initially s table silica particles go through a flocculation period and then resta bilize. This phenomenon is attributed to slow dissolution and the spec ific adsorption of trivalent yttrium cation and its hydroxo complexes on the surface of silica. Furthermore, it is shown that the kinetics o f flocculation and restabilization can be controlled by pH adjustment.