Stirring speed assisted homogenization of precipitation reaction for enhanced optical performance of Y2O3 transparent ceramics
Source abstract
Abstract
Abstract Y 2 O 3 transparent ceramics were fabricated from precipitated powders prepared at different stirring speeds during the precipitation process. The influence of the stirring speed on the phase component of precursors, morphology of Y 2 O 3 powders and properties of fabricated ceramics were systematically investigated. Crystalline phase precursors of (NH 4 ) a Y(OH) b (CO 3 ) c ·H 2 O were prepared from 110 rpm, 220 rpm and 550 rpm respectively. But amorphous precursors of Y(CO 3 )(OH)·nH 2 O (n = 1–1.5) were observed when stirring speeds were 330 rpm and 440 rpm. Y 2 O 3 powders prepared from 440 rpm exhibited the lowest agglomeration and the smallest grain size, and the ceramics with the optimal transmittance was accordingly obtained. The results of computational fluid dynamics software CFX showed that a more homogeneous flow field distribution without local circulations could be produced at 440 rpm, which would be benefit for the optical quality of transparent ceramics. The study would provide a considerable reference for the controllable fabrication of well-dispersibility Y 2 O 3 powders and Y 2 O 3 transparent ceramics.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fluid Dynamics and Heat Transfer · Glass properties and applications · Particle Dynamics in Fluid Flows
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
Show source-provided references
1. Tb3+/Yb3+ co-doped Y2O3 upconversion transparent ceramics: fabrication and characterization for IR excited green emission10.1016/j.jeurceramsoc.2016.07.031 ↗
2. Optical and structural properties of arc melted Ce or Pr-doped Y2O3 transparent ceramics10.1016/j.ceramint.2017.09.092 ↗
3. Synthesis of yttria nano-powders by the precipitation method: the influence of ammonium hydrogen carbonate to metal ions molar ratio and ammonium sulfate addition10.1016/j.jallcom.2016.03.072 ↗
4. Structural and thermo-mechanical properties of Nd: Y2O3 transparent ceramics10.1111/jace.13735 ↗
5. Effects of ZrO2-La2O3 co-addition on the microstructural and optical properties of transparent Y2O3 ceramics10.1016/j.ceramint.2017.03.208 ↗
6. Synthesis and characterization of Y2O3 nanoparticles by sol–gel process for transparent ceramics applications10.1007/s10971-016-3986-3 ↗
7. Microwave assisted hydrothermal synthesis of spherical Y2O3 ceramic powder coated by Eu3+: bright red emitting media with > 80% luminescence efficiency10.1016/j.ceramint.2016.01.208 ↗
8. Characteristics of Y2O3 powders prepared by solution combustion synthesis in the light of a new thermodynamic approach
9. Studies on the synthesis of nanocrystalline Y2O3 and ThO2 through volume combustion and their sintering
10. A novel spray co-precipitation method to prepare nanocrystalline Y2O3 powders for transparent ceramics
11. High optical quality Y2O3 transparent ceramics with fine grain size fabricated by low temperature air pre-sintering and post-HIP treatment10.1016/j.ceramint.2015.11.099 ↗
12. Effect of γ-Al2O3 additives on the microstructure of Y2O3 ceramics10.1007/s10854-015-4169-7 ↗
13. Co-precipitation synthesis of YAG:Ce nanophosphor and vacuum sintering fabrication of transparent ceramics10.1166/sam.2017.2337 ↗
14. Fabrication of YAG transparent ceramics using carbonate precipitated yttria powder10.1016/j.jeurceramsoc.2015.02.014 ↗
15. Co-precipitation synthesis and vacuum sintering of Nd:YAG powders for transparent ceramics10.1016/j.materresbull.2015.04.063 ↗
16. Effects of sintering parameters and Nd doping on the microwave dielectric properties of Y2O3 ceramics10.1016/j.ceramint.2016.01.192 ↗
17. Synthesis of Nd: Y2O3 nanopowders leading to transparent ceramics
18. Effects of pre-treatment of starting powder with sulfuric acid on the fabrication of yttria transparent ceramics10.1016/j.jeurceramsoc.2015.02.008 ↗
19. Fabrication of transparent yttria ceramics through the synthesis of ytttrium hydroxide at low temperature and doping by sulfate ions
20. Effect of bed depth on granular flow and homogenization in a vertical bladed mixer via discrete element method10.1002/ceat.201400686 ↗
21. The effect of rotational speed on granular flow in a vertical bladed mixer10.1016/j.powtec.2015.04.035 ↗
22. Application of Euler–Lagrange CFD for quantitative evaluating the effect of shear force on Carthamus tinctorius L. cell in a stirred tank bioreactor10.1016/j.bej.2016.07.006 ↗
23. Computational fluid dynamics in turbomachinery: a review of state of the art
24. CFD analysis of flow pattern and power consumption for viscous fluids in in-line high shear mixers10.1016/j.cherd.2016.10.013 ↗
25. An improved k‐ ϵ model applied to a wind turbine wake in atmospheric turbulence10.1002/we.1736 ↗
26. Computations of a hydrogen-fueled scramjet combustor on locally refined meshes10.1007/s10494-017-9821-2 ↗
27. Wet-Chemical Routes Leading To Scandia Nanopowders10.1111/j.1151-2916.2003.tb03502.x ↗
28. High sinterability nano- Y2O3 powders prepared via decomposition of hydroxyl-carbonate precursors for transparent ceramics10.1007/s10853-017-1071-0 ↗