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

Xiaoqing Zhang; Yanli Zhang; Han Chen; Lucun Guo

doi:10.1007/s40145-014-0102-4

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

Xiaoqing Zhang, Yanli Zhang, Han Chen, Lucun Guo

College of Materials Science and Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

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.

Original language	English
Pages (from-to)	125-131
Number of pages	7
Journal	Journal of Advanced Ceramics
Volume	3
Issue number	2
DOIs	https://doi.org/10.1007/s40145-014-0102-4
State	Published - 1 Jun 2014

Keywords

alumina
mixed colloidal dispersion
rheology
silicon carbide

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10.1007/s40145-014-0102-4

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title = "Effect of pH on rheology of aqueous Al2O3/SiC colloidal system",

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.",

keywords = "alumina, mixed colloidal dispersion, rheology, silicon carbide",

author = "Xiaoqing Zhang and Yanli Zhang and Han Chen and Lucun Guo",

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AU - Zhang, Xiaoqing

AU - Zhang, Yanli

AU - Chen, Han

AU - Guo, Lucun

PY - 2014/6/1

Y1 - 2014/6/1

N2 - 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.

AB - 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.

KW - alumina

KW - mixed colloidal dispersion

KW - rheology

KW - silicon carbide

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EP - 131

JO - Journal of Advanced Ceramics

JF - Journal of Advanced Ceramics

IS - 2

ER -

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

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