Combined effect of fructose and NaCl on the viscosity of alumina nanopowder suspensions

Çınar, Simge
Akinc, Mufit
Many ceramic processing operations involving powder suspensions aim to optimize the solids loading while maintaining low viscosity. Use of nanopowder suspensions are challenging as they exhibit unexpectedly high viscosities. Low molecular weight saccharides were added to decrease the viscosities of alumina nanopowder suspensions as they modify effective solids content. It was also recently reported that suspensions with very low ionic strengths exhibit lower viscosities as they create high repulsive barrier between the particles. In the present study, the effect of the combination of these two additives on the viscosity is reported. Low temperature differential scanning calorimetry (LT-DSC) and in situ attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) results showed that two additives act independently. Suspensions containing NaCl and fructose yield green compacts with lower porosity and higher strength.


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Effects of electrolyte pattern on mechanical and electrochemical properties of solid oxide fuel cells
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In order to enhance the electrochemical performance and reduce the operation temperature of a conventional electrolyte supported solid oxide fuel cell (SOFC), a three layered electrolyte with various geometry is designed and fabricated. Novel three layered electrolytes comprise a dense and thin scandia alumina stabilized zirconia (ScAlSZ) electrolyte layer sandwiched between two hallow ScAlSZ electrolyte layers each having the same thickness as the support but machined into a filter like architecture in the...
Influence of bound water layer on the viscosity of oxide nanopowder suspensions
Çınar, Simge; Akınç, Müfit (2015-01-01)
Nanopowder suspensions exhibit much higher viscosities compared to micron size powders. The current viscosity models greatly underestimate the viscosity of nanopowder suspensions and hence are inaccurate. Recently, it was shown that a bound water layer around the particles is partially responsible for the high viscosities of alumina nanopowder suspensions. In the present study, the existence and effect of the bound water layer on suspension viscosity has been validated for other oxide systems such as zircon...
Citation Formats
S. Çınar and M. Akinc, “Combined effect of fructose and NaCl on the viscosity of alumina nanopowder suspensions,” JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, pp. 377–382, 2015, Accessed: 00, 2020. [Online]. Available: