Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Preparation and Properties of Stable Suspensions of ZrO2–Y2O3 Powders with Different Particle Sizes for Electrophoretic Deposition

Preparation and Properties of Stable Suspensions of ZrO2–Y2O3 Powders with Different Particle... This paper presents a study of nonaqueous suspensions based on ZrO2–8 mol % Y2O3 (8YSZ) powders and describes the use of the powders for producing thin-film coatings on a La2NiO4 (LNO) substrate by electrophoretic deposition (EPD). Stable suspensions for EPD have been prepared using 8YSZ powders differing in morphology and particle size: nanopowder (YSZ_L) produced by a laser evaporation–condensation process and commercially available powder (YSZ_T) (Tosoh, Japan). Ultrasonic processing has been found to have different effects on the particle size composition of the YSZ_L and YSZ_T suspensions. The two types of suspension have been shown to differ significantly in the kinetics of the deposition current at constant voltage: during deposition from the YSZ_L suspension, the current was observed to rise, whereas in the case of the YSZ_T suspension the current decreased markedly with deposition time. The YSZ_L film has been shown to be denser than the YSZ_T film. After sintering at 1350°C, it consisted of completely formed grains ranging in size from 1 to 5 μm. To remove surface pores in YSZ_T coatings, they should be sintered at a temperature of 1450°C. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Inorganic Materials Springer Journals

Preparation and Properties of Stable Suspensions of ZrO2–Y2O3 Powders with Different Particle Sizes for Electrophoretic Deposition

Inorganic Materials , Volume 56 (9) – Sep 21, 2020

Loading next page...
 
/lp/springer-journals/preparation-and-properties-of-stable-suspensions-of-zro2-y2o3-powders-Pl0apFuuFN

References (24)

Publisher
Springer Journals
Copyright
Copyright © Pleiades Publishing, Ltd. 2020
ISSN
0020-1685
eISSN
1608-3172
DOI
10.1134/S0020168520090095
Publisher site
See Article on Publisher Site

Abstract

This paper presents a study of nonaqueous suspensions based on ZrO2–8 mol % Y2O3 (8YSZ) powders and describes the use of the powders for producing thin-film coatings on a La2NiO4 (LNO) substrate by electrophoretic deposition (EPD). Stable suspensions for EPD have been prepared using 8YSZ powders differing in morphology and particle size: nanopowder (YSZ_L) produced by a laser evaporation–condensation process and commercially available powder (YSZ_T) (Tosoh, Japan). Ultrasonic processing has been found to have different effects on the particle size composition of the YSZ_L and YSZ_T suspensions. The two types of suspension have been shown to differ significantly in the kinetics of the deposition current at constant voltage: during deposition from the YSZ_L suspension, the current was observed to rise, whereas in the case of the YSZ_T suspension the current decreased markedly with deposition time. The YSZ_L film has been shown to be denser than the YSZ_T film. After sintering at 1350°C, it consisted of completely formed grains ranging in size from 1 to 5 μm. To remove surface pores in YSZ_T coatings, they should be sintered at a temperature of 1450°C.

Journal

Inorganic MaterialsSpringer Journals

Published: Sep 21, 2020

There are no references for this article.