A novel Multi-Phase Flash Sintering (MPFS) technique for 3D complex-shaped ceramics
This work demonstrates the first proof-of-concept of Multi-Phase Flash Sintering (MPFS). This novel tech- nique essentially consists of applying a rotating electric field to the sample by means of a multi-phase voltage source as furnace temperature increases. Several ceramic materials with different...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/258277 |
| Acceso en línea: | http://hdl.handle.net/10261/258277 |
| Access Level: | acceso abierto |
| Palabra clave: | Flash sintering Alternating current Field-assisted sintering techniques Complex shape Ceramic materials Yttria-stabilized zirconia |
| Sumario: | This work demonstrates the first proof-of-concept of Multi-Phase Flash Sintering (MPFS). This novel tech- nique essentially consists of applying a rotating electric field to the sample by means of a multi-phase voltage source as furnace temperature increases. Several ceramic materials with different types of elec- trical conductivities are sintered within seconds at furnace temperatures much lower than those used for traditional DC flash sintering due to the higher power densities administered by a multi-phase power supply. Thus, ceramic materials are flashed at relatively lower applied voltages which minimizes un- desired phenomena such as localization and preferential current pathways. Furthermore, MPFS allows diverse electrode configurations to promote a more uniform electric field distribution, enhancing the sin- tering of 3D complex-shaped specimens. MPFS could be a true breakthrough in materials processing, as 3D complex-shaped specimens are homogeneously sintered at reduced temperatures, while keeping all the advantages of conventional flash sintering |
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