Influence of particle concentration on rheological properties of aqueous α-Al2O3 suspensions

Zupančič, Andreja; Lapasin, Romano; Kristoffersson, Annika

doi:10.1016/s0955-2219(97)00168-4

Cited by 64 publications

(37 citation statements)

References 10 publications

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“…In short, the variation of yield stress is an excellent evaluation in the degree of flocculation and confirms that NaPA has outstanding dispersing and stabilizing effects in the studied system. [41], which was also observed in Mg(OH) 2 suspensions as depicted in Fig. 7.…”

Section: Page 11 Of 31supporting

confidence: 65%

“…The viscosity of suspensions with different solid loading was nearly invariable at certain constant shear rate though the shear thinning was observed as the shear rate increases. It is therefore reasonable to infer that there is no distinct particle aggregation and the suspensions have high stability under continuous shearing conditions [41]. …”

Section: Page 11 Of 31mentioning

confidence: 99%

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The rheological behavior and stability of Mg(OH)2 aqueous suspensions in the presence of sodium polyacrylate

Tong

Song

Sun

et al. 2013

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Page 11 Of 31supporting

confidence: 65%

Section: Page 11 Of 31mentioning

confidence: 99%

The rheological behavior and stability of Mg(OH)2 aqueous suspensions in the presence of sodium polyacrylate

Tong

Song

Sun

et al. 2013

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…Once the mass of powder to be dispersed is fixed, a larger material density results in a lower number of particles per volume unit. The number of particles per volume unit directly influences the rheological behavior: a higher number of particles leads to higher viscosity values [35,36]. Thus, the rheological slurry behavior can be explained on these bases.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Washcoat Deposition of Ni- and Co-ZrO2 Low Surface Area Powders onto Ceramic Open-Cell Foams: Influence of Slurry Formulation and Rheology

et al. 2015

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Abstract:The effect of formulations and procedures to deposit thin active layers based on low surface area powders on complex geometry substrates (open-cell foams) was experimentally assessed. An acid-free liquid medium based on water, glycerol, and polyvinyl alcohol was used for powder dispersion, while a dip-coating technique was chosen for washcoat deposition on 30 PPI ceramic open-cell foams. The rheological behavior was explained on the bases of both porosity and actual powder density. It was proved that the use of multiple dippings fulfills flexibility requirements for washcoat load management. Multiple depositions with intermediate flash drying steps at 350 °C were carried out. Washcoat loads in the 2.5 to 22 wt. % range were obtained. Pore clogging was seldom observed in a limited extent in samples with high loading (>20 wt. %). Adhesion, evaluated by means of accelerated stress test in ultrasound bath, pointed out good results of all the deposited layers.

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“…In the case of concentrated sus- pensions like tape casting slurries the linear viscoelastic region is often limited in the very low strain amplitudes. 22 Fig. 6 shows the elastic (G ) and loss or viscous modulus (G ) of the PMN slurry depending on the shear stress amplitude.…”

Section: Rheology Of Pmn Slurriesmentioning

confidence: 99%

Preparation of the Pb(Mg1/3Nb2/3)O3 films by aqueous tape casting

Şakar‐Deliormanlı

Çelik

Polat

2009

Journal of the European Ceramic Society

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Lead magnesium niobate (PMN) is a relaxor ferroelectric material. Because of its high dielectric constant and superior electrostrictive properties it is commonly used in the manufacture of multilayer electronic devices which is typically produced by tape casting. However, preparation of PMN slurry formulations to use in aqueous tape casting process is not investigated in detail yet. Therefore, in this study aqueous PMN formulations were developed for tape casting and its relation with the final properties of PMN films were investigated. The slurries were prepared using poly(acrylic acid)-based comb polymer as the dispersant, nonionic acrylic latex as the binder and the hydroxypropyl methyl cellulose as the wetting agent. The results showed that it is possible to prepare flexible, crack-free PMN films using highly concentrated suspensions without using any plasticizer. The study gives guidelines for the aqueous tape casting of PMN and can be adapted to processing of other multi-component metal oxides.

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Influence of particle concentration on rheological properties of aqueous α-Al2O3 suspensions

Cited by 64 publications

References 10 publications

The rheological behavior and stability of Mg(OH)2 aqueous suspensions in the presence of sodium polyacrylate

The rheological behavior and stability of Mg(OH)2 aqueous suspensions in the presence of sodium polyacrylate

Washcoat Deposition of Ni- and Co-ZrO2 Low Surface Area Powders onto Ceramic Open-Cell Foams: Influence of Slurry Formulation and Rheology

Preparation of the Pb(Mg1/3Nb2/3)O3 films by aqueous tape casting

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