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

Journal of Advanced Ceramics volume 3, pages 125–131 (2014)Cite this article

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.

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Affiliations

  1. College of Materials Science and Engineering, Nanjing University of Technology, Nanjing, 210009, China

    Xiaoqing Zhang, Yanli Zhang, Han Chen & Lucun Guo

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  1. Xiaoqing Zhang
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  2. Yanli Zhang
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  3. Han Chen
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  4. Lucun Guo
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Correspondence to Lucun Guo.

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Zhang, X., Zhang, Y., Chen, H. et al. Effect of pH on rheology of aqueous Al2O3/SiC colloidal system. J Adv Ceram 3, 125–131 (2014). https://doi.org/10.1007/s40145-014-0102-4

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

Keywords

  • alumina
  • silicon carbide
  • mixed colloidal dispersion
  • rheology