Fabrication of Porous Alumina Structures by SPS and Carbon Sacrificial Template for Bone Regeneration
In this work, a procedure for fabricating porous alumina with the use of a carbon sacrificial template has been tested in order to optimize the fabrication of porous structures mimicking the porosity and mechanical properties of the human cortical bone. Two different sources of sacrificial carbon we...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/5/1754 |
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| author | Manuela González-Sánchez Pedro Rivero-Antúnez Rafael Cano-Crespo Víctor Morales-Flórez |
| author_facet | Manuela González-Sánchez Pedro Rivero-Antúnez Rafael Cano-Crespo Víctor Morales-Flórez |
| author_sort | Manuela González-Sánchez |
| collection | DOAJ |
| description | In this work, a procedure for fabricating porous alumina with the use of a carbon sacrificial template has been tested in order to optimize the fabrication of porous structures mimicking the porosity and mechanical properties of the human cortical bone. Two different sources of sacrificial carbon were used and compared, and different sintering and calcination routes were considered. The porosity of the alumina structures studied by Hg porosimetry revealed that the amount of porosity and the size and shape of the pores are still below the required values, although some acicular pores were clearly observed by SEM. Moreover, measured mechanical properties (Young’s modulus) remained below that of the bone, suggesting the need for further consolidation treatments. In summary, these encouraging results drive the optimization of future fabrication routes. |
| first_indexed | 2024-03-09T20:32:41Z |
| format | Article |
| id | doaj.art-12be6b27d39a4cf488b9cba99b9fb244 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T20:32:41Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-12be6b27d39a4cf488b9cba99b9fb2442023-11-23T23:18:18ZengMDPI AGMaterials1996-19442022-02-01155175410.3390/ma15051754Fabrication of Porous Alumina Structures by SPS and Carbon Sacrificial Template for Bone RegenerationManuela González-Sánchez0Pedro Rivero-Antúnez1Rafael Cano-Crespo2Víctor Morales-Flórez3Departamento Física de la Materia Condensada, Universidad de Sevilla, 41012 Sevilla, SpainDepartamento Física de la Materia Condensada, Universidad de Sevilla, 41012 Sevilla, SpainDepartamento Física de la Materia Condensada, Universidad de Sevilla, 41012 Sevilla, SpainDepartamento Física de la Materia Condensada, Universidad de Sevilla, 41012 Sevilla, SpainIn this work, a procedure for fabricating porous alumina with the use of a carbon sacrificial template has been tested in order to optimize the fabrication of porous structures mimicking the porosity and mechanical properties of the human cortical bone. Two different sources of sacrificial carbon were used and compared, and different sintering and calcination routes were considered. The porosity of the alumina structures studied by Hg porosimetry revealed that the amount of porosity and the size and shape of the pores are still below the required values, although some acicular pores were clearly observed by SEM. Moreover, measured mechanical properties (Young’s modulus) remained below that of the bone, suggesting the need for further consolidation treatments. In summary, these encouraging results drive the optimization of future fabrication routes.https://www.mdpi.com/1996-1944/15/5/1754aluminaporous structuremechanical propertiescarbonsacrificial templatespark plasma sintering |
| spellingShingle | Manuela González-Sánchez Pedro Rivero-Antúnez Rafael Cano-Crespo Víctor Morales-Flórez Fabrication of Porous Alumina Structures by SPS and Carbon Sacrificial Template for Bone Regeneration Materials alumina porous structure mechanical properties carbon sacrificial template spark plasma sintering |
| title | Fabrication of Porous Alumina Structures by SPS and Carbon Sacrificial Template for Bone Regeneration |
| title_full | Fabrication of Porous Alumina Structures by SPS and Carbon Sacrificial Template for Bone Regeneration |
| title_fullStr | Fabrication of Porous Alumina Structures by SPS and Carbon Sacrificial Template for Bone Regeneration |
| title_full_unstemmed | Fabrication of Porous Alumina Structures by SPS and Carbon Sacrificial Template for Bone Regeneration |
| title_short | Fabrication of Porous Alumina Structures by SPS and Carbon Sacrificial Template for Bone Regeneration |
| title_sort | fabrication of porous alumina structures by sps and carbon sacrificial template for bone regeneration |
| topic | alumina porous structure mechanical properties carbon sacrificial template spark plasma sintering |
| url | https://www.mdpi.com/1996-1944/15/5/1754 |
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