Characteristics of 8mol% yttria stabilized zirconia powder prepared by spray drying process

Enhanced electrical conductivity of ultrafine-grained 8Y2O3 stabilized ZrO2 produced by two-step sintering technique

“…Prabhakaran et al [16] showed that the ionic conductivity of 8YSZ specimens with AGS of 1.4 m was ∼130 mS/cm at 1000 • C. The results of the present study showed the same conductivity for microwave sintered samples at 900 • C. In other words, the working temperature of MWS samples in the present study is 100 • C lower than that of YSZ in Ref. [16].…”

Synthesis of Nanocrystalline Yttria Stabilized Zirconia for SOFC

“…8-12 mole% yttria stabilized zirconia (8 -12YSZ) powders were synthesized with the step size of 2. Zirconium nitrate and yttrium nitrate were synthesized following some standard procedures mentioned in several literatures [9,10]. Both the solutions were mixed stoichiometrically.…”

Parameters for spray drying ZnO nanopowders as spherical granules

“…47,48 The transform of the precursor droplets in an aqueous aerosol form of solutions, emulsions, suspension or slurries into solid powders can be carried out by concurrent atomizing, drying and rapid evaporation of the aerosol droplets in a hot air flow at a certain temperature and pressure. [34][35][36][37][38][39][40][41][42][43][44][45] There are many techniques to obtain finely atomized droplets, for example flame spray reactor, 28 ultrasonic atomizer systems, 26,27,30 spray dryer with a nozzle, electrostatic sprayer, or rotary head. [34][35][36][37][38][39][40][41][42][43][44][45] Spray dryers represent considerable importance for sample preparation at manufacturing of high technology ceramic materials.…”

“…The atomization, drying, coating and granulation steps are very critical to obtain easily dispersible powders in soft and spherical granule form having a nano size with high specific surface area (SSA). [34][35][36][37][38][39][40][41][42][43][44][45] These properties of ZnO powders play a significant role on the complete wetting process of particle surfaces during working conditions to prevent the porosity formation in a sintering process and/or adverse properties of ZnO in other applications. Therefore, shape, morphology, agglomerate structure, crystallinity, particle size and distribution, and SSA of the powders are very crucial for all kinds of ZnO applications.…”

“…Thus, there are several spray dryer applications to synthesize the oxide powders. [26][27][28][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48] In this study, the ZnO nanopowders were synthesized by combination of precipitation and spray drying processes. The research focuses on the optimization of process parameters of the spray dryer under different experimental working conditions to obtain ZnO nanopowders in spherical granule form.…”