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Dispersion and rheological properties of alumina/zirconia slurries with methyl isobutyl ketone/ethanol solvents


Reference:

Park, H. C., Yoon, S. Y., Lee, Y. B., Kim, B. K. and Stevens, R., 2002. Dispersion and rheological properties of alumina/zirconia slurries with methyl isobutyl ketone/ethanol solvents. Journal of Materials Synthesis and Processing, 10 (5), pp. 237-244.

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Abstract

The dispersion and rheological behavior of alumina, zirconia, and alumina/zirconia mixed slurries were investigated using various solvent ratios of methyl isobutyl ketone (MIBK)/ethanol (EtOH), by measuring sedimentation bulk density, particle size distribution, and viscosity. Well-dispersed suspensions were obtained in MIBK-rich solvents with additional dispersant and in EtOH-rich without dispersant. The shear viscosity of the slurries was dependent on both the Al2O3/ZrO2 ratio and MIBK/EtOH ratio. At a constant solvent ratio, however, similar rheological behavior was shown regardless of the relative amounts of the two solids. At low shear rate, a Newtonian plateau was absent in the Al2O3/ZrO2 slurries. With increasing shear rate (>600 s(-1)), Al2O3 slurries exhibited a Newtonian plateau while ZrO2 demonstrated continuous shear thinning.

Details

Item Type Articles
CreatorsPark, H. C., Yoon, S. Y., Lee, Y. B., Kim, B. K. and Stevens, R.
DepartmentsFaculty of Engineering & Design > Mechanical Engineering
RefereedYes
StatusPublished
ID Code2628

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