Microstructural design of cellular 3 YTZ-Al2O3 ceramic membranes
Source abstract
Abstract
Abstract Porous 3 YTZ-Al2O3 membranes were processed aiming controlled cellular microstructures for potential separation and electrochemical applications. The processing method relies on emulsification of mixed suspensions of Al2O3 and 3 YTZ powders in sunflower oil. Taguchi experimental planning was used to seek guidelines for optimization of microstructural and structural characteristics, including porosity, phase composition and percolation of resulting membranes. Effects of alumina content, oil:suspension ratio, firing temperature and 2-step firing were evaluated by a correlation matrix and multivariate fitting. This analysis provided interpretation for prevailing effects on open and closed porosity, relative porosity loss during firing, and relevant microstructural and structural effects. The results demonstrate that the content of alumina plays key effects on partial transformation of tetragonal to monoclinic zirconia and on cell size. Percolation was analyzed by impedance spectroscopy, revealing that it is determined by series association of resistance to transport across the open cells and internal interfaces, ascribed to interruptions of open cell paths.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advanced materials and composites · Advancements in Solid Oxide Fuel Cells
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References (34)
Show source-provided references
1. Ceramic-based membranes for water and wastewater treatment10.1016/j.colsurfa.2019.05.074 ↗
2. Preparation and characterization of hydrophobicceramic hollow fibre membrane10.1016/j.memsci.2006.12.039 ↗
3. Tubular hydrophobic ceramic membrane with asymmetric structure for water desalination via vacuum membrane distillation process10.1016/j.desal.2018.05.027 ↗
4. Hydrothermal synthesis of boehmite in cellular alumina monoliths for catalytic and separation applications10.1016/j.jeurceramsoc.2015.04.040 ↗
5. Cellular MgAl2O4 spinel prepared by reactive sintering of emulsified ceramic emulsions10.1016/j.matlet.2015.10.169 ↗
6. Flexible design of cellular Al2TiO5 and Al2TiO5-Al2O3 composite monoliths by reactive firing10.1016/j.matdes.2017.06.010 ↗
7. Highly-porous mayenite-based ceramics by combined suspension emulsification and reactive sintering10.1016/j.matlet.2018.11.061 ↗
8. Design of NiAl2O4 cellular monoliths for catalytic applications10.1016/j.matdes.2017.01.003 ↗
9. Preparation of ceramic foam spheres by injection molding of emulsions10.1080/21870764.2019.1695558 ↗
10. Cellular ceramics by direct foaming of emulsified ceramic powder suspensions10.1111/j.1551-2916.2008.02553.x ↗
11. Cellular ceramics by slip casting of emulsified suspensions10.1016/j.jeurceramsoc.2020.04.002 ↗
12. Improving the filtration performance of ZrO2 membrane in non-polar organic solvents by surface hydrophobic modification10.1016/j.memsci.2011.03.056 ↗
13. Upgrading of zirconia membrane performance in removal of hazardous VOCs from water by surface functionalization10.1016/j.cej.2019.05.160 ↗
14. Cellular zirconia ceramics processed by direct emulsification10.1016/j.jeurceramsoc.2020.01.005 ↗
15. Solid solubility and precipitation in a single-crystal alumina–zirconia system10.1111/j.1151-2916.2002.tb00553.x ↗
16. Mechanical properties of zirconia toughened alumina with 10-24vol% 1Y-TZP reinforcement10.1016/j.jeurceramsoc.2012.06.019 ↗
17. S.M. Olhero, I. Ganesh, P.MC. Torres, F.J. Alves, J.M.F. Ferreira, Aqueous Colloidal Processing of ZTA Composites.
18. What future for zirconia as a biomaterial?10.1016/j.biomaterials.2005.07.034 ↗
19. Preparation and characterization of porous alumina–zirconia composite ceramics10.1016/j.jeurceramsoc.2011.01.011 ↗
20. Phase analysis in zirconia systems10.1111/j.1151-2916.1972.tb11290.x ↗
21. Porous Al2O3–ZrO2 composites fabricated by an ice template method10.1016/j.scriptamat.2009.12.018 ↗
22. Fabrication of porous alumina–zirconia ceramics by gel-casting and infiltration methods10.1016/j.matdes.2014.05.061 ↗
23. Model of two-step sintering conditions for yttria-substituted zirconia powders10.1016/j.matchemphys.2010.11.028 ↗
24. Ni-YSZ cermets for solid oxide fuel cell anodes via two-step firing10.1016/j.ijhydene.2014.07.053 ↗
25. Calibration curve for quantitative analysis of the monoclinic-tetragonal ZrO2 system by X-Ray diffraction10.1111/j.1151-2916.1984.tb19614.x ↗
26. Lifetime estimation of a zirconia-alumina composite for biomedical applications10.1016/j.dental.2013.10.006 ↗
27. Effect of superplastic deformation on thermal expansion behavior of tetragonal zirconia polycrystals10.2320/matertrans.44.1053 ↗
28. Braulio · Ceram. Int. · 2011 · 37 · 170510.1016/j.ceramint.2011.03.049 ↗
29. The tetragonal-monoclinic transformation in zirconia: lessons learned and future trends10.1111/j.1551-2916.2009.03278.x ↗
30. Phase relationships in zirconia-yttria system10.1007/BF01031853 ↗
31. The mechanics of three-dimensional cellular materials10.1098/rspa.1982.0088 ↗
32. Elasticity of porous ceramics—a critical study of modulus−porosity relations10.1016/j.jeurceramsoc.2005.01.041 ↗
33. Production of porous materials through consolidation of Pickering emulsions10.1002/adem.200600191 ↗
34. Dielectric relaxation of dilute aqueous NaOH, NaAl(OH)4, and NaB(OH)410.1021/jp992551l ↗