Determination of Particle Size Distribution of Zirconium Dioxide Powders by Static Laser Scattering and Optical Microscopy

Миронов, Р. А.; Забежайлов, М. О.; Yakushkina, V. S.; Rusin, M. Yu.

doi:10.1134/s0020168517150122

Cited by 2 publications

(2 citation statements)

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“…The absorption of dispersant and adjusting of the pH can alter the surface properties. 9,17,18 Attempts were made to apply the results of the previous studies. YSZ suspensions stability was evaluated by measuring the viscosity, sedimentation parameters, particle size, and zeta potential.…”

Section: Introductionmentioning

confidence: 99%

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Effect of dispersion states (electrostatic/electrosteric stabilization) on particles arrangement in the yttria‐stabilized zirconia sediments

Shoja

Majidian

Nikzad

2021

Int J Applied Ceramic Tech

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In the present work, particle arrangement and their packing in the sediment layer of zirconia suspension were studied. To evaluate the particle settling, aqueous suspensions of zirconia nanoparticles were prepared in different dispersion states. In one state, Dolapix CE64 was used as a dispersant to provide electrosteric mechanism. In another state, pH of the suspension was adjusted at 4 to provide electrostatic mechanism. The other state was the combination of dispersant and pH adjustment which resulted in the most stable suspension. First of all, the stability of all dispersion states was evaluated by zeta potential, sediment volume (SV) and height, viscosity, and packing density (PD). Then, the sediment layers of all suspensions were characterized. Incorporation of electrostatic mechanism was resulted in a main decrease in viscosity with high surface charges, while electrosteric mechanism caused lower sedimentation of particles. Fall velocities of particles/agglomerates were estimated, and the influences of dispersion states on the particles fall velocities were characterized.The microstructural observation revealed homogeneous packing of particles in the sediment layer of the stable suspension demonstrating the proper dispersion of particles. Dolapix CE64 and pH adjustment resulted in a uniform arrangement of particles without agglomeration and spherical and regular granules with a uniform shape.

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Section: Introductionmentioning

confidence: 99%

“…Electrostatic stabilization was provided by adjusting pH, and electrosteric stabilization was provided by Dolapix CE64, which is a commercial, available, inexpensive, and easy to use dispersant. The absorption of dispersant and adjusting of the pH can alter the surface properties 9,17,18 …”

Section: Introductionmentioning

confidence: 99%