Manufacturing-Driven Insights into Structure, Mechanics, and Permeability of Asymmetric LSCF Membranes via Freeze Casting and Tape Casting
The performance of dense membranes is influenced by both material properties and design features, with thinner membranes exhibiting faster transport rates than thicker ones. However, mechanical limitations restrict the use of standalone thin membranes. A hierarchical structure approach is proposed t...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
|
| Series: | Open Ceramics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539525000392 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849691740411265024 |
|---|---|
| author | Valdir Pereira Junior Priscila Lemes Murilo Daniel de Mello Innocentini Mara Gabriela Novy Quadri Dachamir Hotza Sergio Yesid Gómez González |
| author_facet | Valdir Pereira Junior Priscila Lemes Murilo Daniel de Mello Innocentini Mara Gabriela Novy Quadri Dachamir Hotza Sergio Yesid Gómez González |
| author_sort | Valdir Pereira Junior |
| collection | DOAJ |
| description | The performance of dense membranes is influenced by both material properties and design features, with thinner membranes exhibiting faster transport rates than thicker ones. However, mechanical limitations restrict the use of standalone thin membranes. A hierarchical structure approach is proposed to address this issue, consisting of a thin, dense layer supported by a porous substrate that provides mechanical strength. The porous support is engineered through microstructuring the pore architecture to enhance strength and permeation rates, as it governs overall oxygen transport in asymmetric membranes. This study combines freeze casting and tape casting to fabricate asymmetric LSCF membranes. The porous supports were manufactured using freeze casting, studying the effects of the freezing method, solids load, and binder concentration systematically evaluated through experimental design. The interaction between these variables and their impact on mechanical properties, porosity, and permeability was thoroughly analyzed. The freezing method significantly altered pore directionality, connectivity, stress strength, fracture strain, and permeability. While standalone dense membranes exhibited low mechanical strength, the porous support demonstrated up to 13-fold mechanical strength. The dense, thin membrane, produced by tape casting, was successfully coupled with the porous support, with no cracking or delamination observed at the interface after deposition and co-sintering. |
| format | Article |
| id | doaj-art-a003db8bcb9e44cabada0459944def7d |
| institution | DOAJ |
| issn | 2666-5395 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj-art-a003db8bcb9e44cabada0459944def7d2025-08-20T03:20:56ZengElsevierOpen Ceramics2666-53952025-06-012210077210.1016/j.oceram.2025.100772Manufacturing-Driven Insights into Structure, Mechanics, and Permeability of Asymmetric LSCF Membranes via Freeze Casting and Tape CastingValdir Pereira Junior0Priscila Lemes1Murilo Daniel de Mello Innocentini2Mara Gabriela Novy Quadri3Dachamir Hotza4Sergio Yesid Gómez González5Department of Chemical Engineering (EQA), Federal University of Santa Catarina (UFSC), 88040-900 Florianópolis, BrazilLatin American Institute of Technology, Infrastructure and Territory (ILATIT), Federal University of Latin American Integration (UNILA), 85870-650 Foz do Iguaçu, BrazilUniversity of Ribeirão Preto – UNAERP, 14096-900 Ribeirão Preto, BrazilDepartment of Chemical Engineering (EQA), Federal University of Santa Catarina (UFSC), 88040-900 Florianópolis, BrazilDepartment of Chemical Engineering (EQA), Federal University of Santa Catarina (UFSC), 88040-900 Florianópolis, BrazilDepartment of Chemical Engineering (EQA), Federal University of Santa Catarina (UFSC), 88040-900 Florianópolis, Brazil; Corresponding author.The performance of dense membranes is influenced by both material properties and design features, with thinner membranes exhibiting faster transport rates than thicker ones. However, mechanical limitations restrict the use of standalone thin membranes. A hierarchical structure approach is proposed to address this issue, consisting of a thin, dense layer supported by a porous substrate that provides mechanical strength. The porous support is engineered through microstructuring the pore architecture to enhance strength and permeation rates, as it governs overall oxygen transport in asymmetric membranes. This study combines freeze casting and tape casting to fabricate asymmetric LSCF membranes. The porous supports were manufactured using freeze casting, studying the effects of the freezing method, solids load, and binder concentration systematically evaluated through experimental design. The interaction between these variables and their impact on mechanical properties, porosity, and permeability was thoroughly analyzed. The freezing method significantly altered pore directionality, connectivity, stress strength, fracture strain, and permeability. While standalone dense membranes exhibited low mechanical strength, the porous support demonstrated up to 13-fold mechanical strength. The dense, thin membrane, produced by tape casting, was successfully coupled with the porous support, with no cracking or delamination observed at the interface after deposition and co-sintering.http://www.sciencedirect.com/science/article/pii/S2666539525000392PermeabilityMechanical propertiesPorosity-morphology control |
| spellingShingle | Valdir Pereira Junior Priscila Lemes Murilo Daniel de Mello Innocentini Mara Gabriela Novy Quadri Dachamir Hotza Sergio Yesid Gómez González Manufacturing-Driven Insights into Structure, Mechanics, and Permeability of Asymmetric LSCF Membranes via Freeze Casting and Tape Casting Open Ceramics Permeability Mechanical properties Porosity-morphology control |
| title | Manufacturing-Driven Insights into Structure, Mechanics, and Permeability of Asymmetric LSCF Membranes via Freeze Casting and Tape Casting |
| title_full | Manufacturing-Driven Insights into Structure, Mechanics, and Permeability of Asymmetric LSCF Membranes via Freeze Casting and Tape Casting |
| title_fullStr | Manufacturing-Driven Insights into Structure, Mechanics, and Permeability of Asymmetric LSCF Membranes via Freeze Casting and Tape Casting |
| title_full_unstemmed | Manufacturing-Driven Insights into Structure, Mechanics, and Permeability of Asymmetric LSCF Membranes via Freeze Casting and Tape Casting |
| title_short | Manufacturing-Driven Insights into Structure, Mechanics, and Permeability of Asymmetric LSCF Membranes via Freeze Casting and Tape Casting |
| title_sort | manufacturing driven insights into structure mechanics and permeability of asymmetric lscf membranes via freeze casting and tape casting |
| topic | Permeability Mechanical properties Porosity-morphology control |
| url | http://www.sciencedirect.com/science/article/pii/S2666539525000392 |
| work_keys_str_mv | AT valdirpereirajunior manufacturingdriveninsightsintostructuremechanicsandpermeabilityofasymmetriclscfmembranesviafreezecastingandtapecasting AT priscilalemes manufacturingdriveninsightsintostructuremechanicsandpermeabilityofasymmetriclscfmembranesviafreezecastingandtapecasting AT murilodanieldemelloinnocentini manufacturingdriveninsightsintostructuremechanicsandpermeabilityofasymmetriclscfmembranesviafreezecastingandtapecasting AT maragabrielanovyquadri manufacturingdriveninsightsintostructuremechanicsandpermeabilityofasymmetriclscfmembranesviafreezecastingandtapecasting AT dachamirhotza manufacturingdriveninsightsintostructuremechanicsandpermeabilityofasymmetriclscfmembranesviafreezecastingandtapecasting AT sergioyesidgomezgonzalez manufacturingdriveninsightsintostructuremechanicsandpermeabilityofasymmetriclscfmembranesviafreezecastingandtapecasting |