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2003•Journal of Inorganic MaterialsRequires access

Optimization Study on the Rheological Behavior of Alumina Suspensions

Yang Liu

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Abstract

The influence of various polyelectrolyte dispersants on the rheological properties of sub-micron alumina suspensions was investigated. Stable 58vol% alumina suspensions suitable for casting was prepared by optimizing the factors including pH, dispersant type and amount, etc. Green compacts with homogeneous microstructures were obtained by the gel casting method. Finally, Al2O3 bodies sintered at 1600℃for 2h, with a relative dencity more then 98% were fabricated.

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What this paper is about

The influence of various polyelectrolyte dispersants on the rheological properties of sub-micron alumina suspensions was investigated. Stable 58vol% alumina suspensions suitable for casting was prepared by optimizing the factors including pH, dispersant type and amount, etc. Green compacts with homogeneous microstructures were obtained by the gel casting method. Finally, Al2O3 bodies sintered at 1600℃for 2h, with a relative dencity more then 98% were fabricated.

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Available abstract

The influence of various polyelectrolyte dispersants on the rheological properties of sub-micron alumina suspensions was investigated. Stable 58vol% alumina suspensions suitable for casting was prepared by optimizing the factors including pH, dispersant type and amount, etc. Green compacts with homogeneous microstructures were obtained by the gel casting method. Finally, Al2O3 bodies sintered at 1600℃for 2h, with a relative dencity more then 98% were fabricated.

Key concepts: Dispersant, Materials science, Rheology, Homogeneous, Tape casting, Casting, Composite material, Microstructure

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