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Research Article | Open Access

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

Xiaoqing ZHANGYanli ZHANGHan CHENLucun GUO( )
College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China
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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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Journal of Advanced Ceramics
Pages 125-131
Cite this article:
ZHANG X, ZHANG Y, CHEN H, et al. Effect of pH on rheology of aqueous Al2O3/SiC colloidal system. Journal of Advanced Ceramics, 2014, 3(2): 125-131. https://doi.org/10.1007/s40145-014-0102-4

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Received: 12 December 2013
Revised: 11 March 2014
Accepted: 13 March 2014
Published: 01 June 2014
© The author(s) 2014

Open Access: This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.

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