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Role of Particle Dissolution in the Stability of Binary Yttria‐Silica Colloidal Suspensions
Author(s) -
Yasrebi Mehrdad,
ZiomekMoroz Margaret,
Kemp William,
Sturgis David H.
Publication year - 1996
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1996.tb08576.x
Subject(s) - dissolution , flocculation , colloid , chemical engineering , adsorption , particle (ecology) , aqueous solution , kinetics , materials science , yttria stabilized zirconia , yttrium , particle size , colloidal particle , chemistry , mineralogy , inorganic chemistry , organic chemistry , composite material , ceramic , metallurgy , oxide , cubic zirconia , quantum mechanics , engineering , geology , oceanography , physics
The stability of yttria‐silica binary aqueous colloidal suspensions is examined as a function of time. It has been observed that initially stable silica particles go through a flocculation period and then restabilize. This phenomenon is attributed to slow dissolution and the specific adsorption of trivalent yttrium cation and its hydroxo complexes on the surface of silica. Furthermore, it is shown that the kinetics of flocculation and restabilization can be controlled by pH adjustment.