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Influence of Solids Concentration on the Isoelectric Point of Aqueous Barium Titanate

Published

Author(s)

U Paik, Vincent A. Hackley

Abstract

We report on findings that the particle surface charge is influenced by solids concentration in aqueous suspensions of barium titanate. By combining results from two electrokinetic methods, three decades in solids concentration were analyzed. Combined results demonstrate a systematic acidic shift in the isoelectric pH with decreasing solids. The shift is attributed to the development of a Ti-rich surface layer. Using kinetic arguments, it is shown that the thickness of this layer at a given time is proportional to the surface-to-volume ratio.
Citation
Journal of the American Ceramic Society
Volume
83
Issue
No. 10

Keywords

barium titanate, ceramic processing, dissolution, isoelectric point

Citation

Paik, U. and Hackley, V. (2000), Influence of Solids Concentration on the Isoelectric Point of Aqueous Barium Titanate, Journal of the American Ceramic Society (Accessed February 21, 2024)
Created September 30, 2000, Updated October 12, 2021