Journal ArticleDOI
Shear and compressive rheology of aggregated alumina suspensions
TLDR
In this article, the shear and compressive properties of aggregated alumina particles are determined as functions of volume fraction and the strength of the interparticle attraction, and the links between compressive and shear properties are well described by linear elastic models where the Py and τy are a function of Poisson's ratio which, for the suspensions investigated, has a value near 0.49.Abstract:
The shear and compressive properties of aggregated alumina particles are determined as functions of volume fraction and the strength of the interparticle attraction. Over a range of volume fractions, yield stresses, τy, elastic moduli, the strain delimiting the extent of the linear elastic response, and compressive yield stress, Py, are well described by power-law functions of volume fraction, while the role of interparticle attractions can be accounted for by expressing these mechanical properties as (ϕ/ϕg − 1)n, where ϕg captures the strength of particle attractions and n the microstructure. The links between compressive and shear properties are well described by linear elastic models where the Py and τy are a function of Poisson's ratio which, for the suspensions investigated, has a value near 0.49.read more
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Journal ArticleDOI
Colloidal Processing of Ceramics
TL;DR: In this article, a review of colloidal processing of ceramics is presented with an emphasis on interparticle forces, suspension rheology, consolidation techniques, and drying behavior.
Journal ArticleDOI
Colloidal inks for directed assembly of 3-D periodic structures
TL;DR: In this article, concentrated colloidal gels with tailored visco-elastic properties were designed to form self-supporting periodic structures via directed assembly of colloidal inks.
Journal ArticleDOI
Surface chemistry-rheology relationships in concentrated mineral suspensions
TL;DR: In this article, the yield stress of concentrated aqueous suspensions of alumina, zirconia and kaolin can be controlled through regulation of pH and the addition of inorganic electrolytes, ionic surfactants and polyelectrolytes (polymers).
Journal ArticleDOI
Shear rheology of hard-sphere, dispersed, and aggregated suspensions, and filler-matrix composites
TL;DR: Predictive curves of fundamental rheological properties (viscosity, yield stress, elastic and complex moduli) vs. particle volume fraction and shear rate were obtained from theoretical or empirical models and sound experimental data, covering ranges of practical interest.
Journal ArticleDOI
Yodel: A Yield Stress Model for Suspensions
Robert J. Flatt,Paul Bowen +1 more
TL;DR: In this paper, a model for the yield stress of particulate suspensions is presented that incorporates microstructural parameters taking into account volume fraction of solids, particle size and particle size distribution, maximum packing, percolation threshold, and interparticle forces.
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