Viscosity of concentrated colloidal suspensions: comparison of bidisperse models

Qin, Kuide; Zaman, Abbas A.

doi:10.1016/s0021-9797(03)00615-5

Cited by 49 publications

(45 citation statements)

References 25 publications

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“…In addition, small particles are absorbed by large particles because the Van der Waal force among small particles and large particles is stronger than that among large particles, as shown in Figure 4, which has been confirmed by the adsorption test demonstrated in Figure 5. That test indicates a maximum value (about 30%) for the total adsorption of the small particles to the large particles [14,15].…”

Section: Figurementioning

confidence: 95%

Particle size polydispersity of the rheological properties in magnetorheological fluids

Tang

2011

Sci. China Phys. Mech. Astron.

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Dispersion of metal particles in fluids can be used to manufacture magnetorheologic fluids (MRF). Properties of these dispersion systems are mainly determined by the arrangements and contacts among particles. In this paper, particles with smaller sizes than those in the target dispersion system are added using iron particles dispersed in silicon oil as a model to control the arrangements and contacts. The result suggests that these small-sized particles have a significant effect on the viscoelastic properties of the dispersion. The maximum packing density and the fluid viscosity depend mainly on the adhesion of small particles, which is directly related to the fraction of small particles in the model dispersion system. Under a magnetic field, the yield stress of the dispersion system is proportional to the concentration of iron particles, suggesting that the yield stress relies directly on the presence of small particles. These small particles in the fluid determine the difference in stress of the magnetorheological fluid (MRF) with or without a magnetic field. magnetorheological fluids (MRF), iron particles, yield stress, bimodal PACS: 75.75.Cd, 75.75.Fk, 75.75.Mm

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Section: Figurementioning

confidence: 95%

Particle size polydispersity of the rheological properties in magnetorheological fluids

Tang

2011

Sci. China Phys. Mech. Astron.

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“…One way of overcoming this problem is by using mixtures of nano/submicronsized particles. Adding coarser particles to a nanozirconia suspension can reduce considerably the suspension viscosity due to particle packing enhancement making the suspension preparation and handling easy and allowing the achievement of higher solid loadings in the final suspension [22]. A recent study on alumina-titania APS coatings obtained from nano/submicron-sized particles mixtures reported an improvement of mechanical properties of the coatings when compared with coatings deposited from exclusively nanostructured powders.…”

Section: Introductionmentioning

confidence: 99%

Role of suspension preparation in the spray drying process to obtain nano/submicrostructured YSZ powders for atmospheric plasma spraying

Carpio

Moreno

Gómez³

et al. 2015

Journal of the European Ceramic Society

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Thermal barrier coatings were manufactured by atmospheric plasma spray process from YSZ powders. These powders were made by a reconstitution process which consists in a spray-drying of suspensions followed by thermal treatment of the granules.Nano-and submicron-sized YSZ particles were used as starting material. Feeding well dispersed suspension to spray-drying chamber is the first key step in the reconstitution process. With this aim, concentrated, stable YSZ suspensions were obtained by means of the optimisation of the preparation conditions. Then reconstituted granules were produced by spray-drying of the YSZ suspensions and the following thermal treatment which was optimised.The reconstituted powders were then successfully deposited on austenitic stainless steel coupons by APS. The findings in this work proved that the reconstituted powders characteristics which in turn are related to the starting suspension properties affect the final coating microstructure in terms of the amount of unmelted zones.

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“…Briefly, the predictive models can be divided into two categories (Qin and Zaman, 2003). One is the effective volume fraction or hard-sphere scaling approach.…”

Section: A Review Of Viscosity Models For Particle Dispersionsmentioning

confidence: 99%

Modelling the zero shear viscosity of bimodal high solid content latex: Calculation of the maximum packing fraction

Pishvaei

Graillat

Cassagnau

et al. 2006

Chemical Engineering Science

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Viscosity of concentrated colloidal suspensions: comparison of bidisperse models

Cited by 49 publications

References 25 publications

Particle size polydispersity of the rheological properties in magnetorheological fluids

Particle size polydispersity of the rheological properties in magnetorheological fluids

Role of suspension preparation in the spray drying process to obtain nano/submicrostructured YSZ powders for atmospheric plasma spraying

Modelling the zero shear viscosity of bimodal high solid content latex: Calculation of the maximum packing fraction

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