alumina, silicon carbide, mixed colloidal dispersion, rheology
The rheological behavior of aqueous Al2O3/SiC suspensions at different pH values was investigated by rheological measurement. Experimental results showed that at pH = 3–6, Al2O3 and SiC particles have opposite surface charges, and the binary suspensions have lower viscosity than the unary suspensions at shear rates of 0–300 s-1. Furthermore, at pH = 3–12, the stability of the Al2O3 component seemed to dominate the overall rheological behavior of the Al2O3/SiC binary suspensions. The tendency mentioned above showed little variations in various ionic strengths, particle diameters and component fractions.
Tsinghua University Press
Xiaoqing ZHANG, Yanli ZHANG, Han CHEN et al. Effect of pH on rheology of aqueous Al2O3/SiC colloidal system. Journal of Advanced Ceramics 2014, 3(2): 125-131.