Abstract
The dependence of development and characteristics of TiC aqueous suspension on the pH values and/or Darvan C addition has been investigated. Zeta potential studies show that the isoelectric point of TiC particulates is at pH 2. Addition of Darvan C increases the zeta potential in magnitude and modifies the surface to more negative charge in the pH range from 1.8 to 11. Using electrostabilization as the dispersing mechanism, it was found that the suspensions formed at conditions pH 6.97 with 2 wt% Darvan C addition; pH 9.3 with 0.5 wt% Darvan C addition; or pH 10.1 without Darvan C and are all in well dispersion, as determined by correlation of zeta potential and settling tests.
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