Microwave, spark plasma and conventional sintering to obtain controlled thermal expansion beta-eucryptite materials
Lithium aluminosilicate was fabricated by conventional and non-conventional sintering: microwave and spark plasma sintering, from 1200 to 1300 ºC. A considerable difference in densification, microstructure, coefficient of thermal expansion behavior and hardness and Young’s modulus was observed. Micr...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/60864 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/60864 |
| Access Level: | acceso abierto |
| Palabra clave: | Ceramics Densification Coefficient Fabrication Alumina Growth TEORIA DE LA SEÑAL Y COMUNICACIONES CIENCIA DE LOS MATERIALES E INGENIERIA METALURGICA |
| Sumario: | Lithium aluminosilicate was fabricated by conventional and non-conventional sintering: microwave and spark plasma sintering, from 1200 to 1300 ºC. A considerable difference in densification, microstructure, coefficient of thermal expansion behavior and hardness and Young’s modulus was observed. Microwave technology made possible to obtain fully dense glass-free lithium aluminosilicate bulk material (>99%) with near-zero and controlled coefficient of thermal expansion and relatively high mechanical properties (7.1 GPa of hardness and 110 GPa of Young’s modulus) compared to the other two processes. It is believed that the heating mode and effective particle packing by microwave sintering are responsible to improve these properties. |
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