"Effect of pH on rheology of aqueous Al<sub>2</sub>O<sub>3</sub>/SiC co" by Xiaoqing ZHANG, Yanli ZHANG et al.

Article Title

Effect of pH on rheology of aqueous Al₂O₃/SiC colloidal system

Authors

Xiaoqing ZHANG, College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China
Yanli ZHANG, College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China
Han CHEN, College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China
Lucun GUO, College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China

Keywords

alumina, silicon carbide, mixed colloidal dispersion, rheology

Abstract

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.

DOI

https://doi.org/10.1007/s40145-014-0102-4

Publisher

Tsinghua University Press

Recommended Citation

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.

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