Artículo
Influences of the solid load on the microstructure and compressive behavior of Fe2O3 scaffolds manufactured by freeze-casting using stearic acid as dispersant agent
Autor/es | Lloreda Jurado, Pedro Javier
Pérez-Puyana, Víctor Manuel Romero García, Alberto Sepúlveda Ferrer, Ranier Enrique |
Departamento | Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte Universidad de Sevilla. Departamento de Ingeniería Química |
Fecha de publicación | 2022 |
Fecha de depósito | 2021-12-22 |
Publicado en |
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Resumen | Porous materials manufactured by freeze-casting are demonstrating potential application as oxygen carriers for
the production and purification of hydrogen, or anode material for lithium-ion batteries. However, to obtain ... Porous materials manufactured by freeze-casting are demonstrating potential application as oxygen carriers for the production and purification of hydrogen, or anode material for lithium-ion batteries. However, to obtain the required pore morphology and sufficient mechanical strength, the suspension processing parameters must be controlled. Fe2O3 nanoparticles/camphene suspensions were fabricated using stearic acid as the dispersant agent showing a low-viscosity (130 mPa⋅s) with a high solid volume fraction (0.3). Suspensions show a shear-thinning behavior according to the Sisko model and a maximum packing fraction of 0.569 estimated from a zero porosity sample. A modified Krieger and Dougherty model was introduced to incorporate the influence of the particleaspect ratio. The Fe2O3 scaffolds manufactured by freeze-casting shown a gradient pore size along the freezing direction, which was diminished with the solid volume fraction, the compression strength was improved with the pore size reduction and fitted according to the minimum solid area model. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | PIF II.2A
MAT2016-76713-P |
Cita | Lloreda Jurado, P.J., Pérez-Puyana, V.M., Romero García, A. y Sepúlveda Ferrer, R.E. (2022). Influences of the solid load on the microstructure and compressive behavior of Fe2O3 scaffolds manufactured by freeze-casting using stearic acid as dispersant agent. Journal of the European Ceramic Society, 42 (1), 193-201. |
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